Community Property

Chapters 16 through 18 developed the common-law concurrent estates: tenancy in common, joint tenancy, and tenancy by the entirety. Each answers a single question — how two or more persons may simultaneously hold one thing. Community property answers a different question. It does not ask how a title is shared; it asks how the property of a married couple is to be classified, by whom it is to be managed, and how it is to be divided when the marriage ends by divorce or by death. It is a regime, not an estate: a system of characterization that operates upon every asset the spouses acquire, whatever the form of the title deed. Its rules descend not from Westminster but from Rome by way of Visigothic Spain, Las Siete Partidas, the Spanish colonial ordinances, and the Mexican law that governed Louisiana, Texas, and the Southwest before those territories entered the Union. This chapter develops that regime and explains why its principles cannot be derived from, or reconciled to, the doctrines of the preceding three chapters.

1. Community property is a classification system, not a concurrent estate. It determines the character of every asset a married couple holds — community, separate, or quasi-community — and from that character derive management rights, creditor exposure, testamentary power, and the rules of division. Form of title is evidence of character; it is rarely conclusive.
2. The regime descends from civil law, not from English common law. Its lineage runs from Roman and Visigothic marital property through the Fuero Juzgo and Las Siete Partidas to the Spanish colonial and Mexican law received in Louisiana, Texas, New Mexico, Arizona, California, Nevada, Idaho, and Washington; Wisconsin adopted it by statute in 1984 through the Uniform Marital Property Act.
3. Marriage creates a marital economic community. From the date of marriage until the date of separation or dissolution, the labor, earnings, and skill of each spouse belong to the community, and property acquired with those earnings takes the character of its source.
4. The general community presumption is strong and rebuttable only by clear and convincing evidence. Property possessed during marriage or on dissolution is presumed community; the burden of establishing a separate character rests upon the spouse asserting it. See Cal. Fam. Code § 760; Tex. Fam. Code § 3.003.
5. Separate property is defined by acquisition, not by use. Property owned before marriage, and property acquired during marriage by gift, devise, or descent, is separate, together with the rents, issues, and profits of separate property in the majority of jurisdictions — though Texas, Louisiana, and Idaho treat income from separate property as community.
6. Commingling does not destroy separate character; failure of proof does. A separate claim survives commingling if it can be traced by direct tracing or by the family-expense (exhaustion) method. Where the record will not support tracing, the community presumption controls the whole.
7. Transmutation changes character by agreement and, in modern statutes, only in writing. Cal. Fam. Code § 852 requires an express written declaration by the adversely affected spouse; the older oral and implied transmutations have been abrogated in most jurisdictions.
8. Management is equal, and it is fiduciary. The husband's historic sole management was abolished in the 1970s. Each spouse now manages the community, but subject to a duty of the highest good faith and fair dealing — the duty of a confidential relationship — with joinder required for conveyances and encumbrances of community real property and for gifts of community assets.
9. Liability follows character and, in some states, the managerial rule. Community property is generally liable for debts incurred by either spouse during marriage; separate property is liable for that spouse's own debts and, under the doctrine of necessaries, for the necessities of the family.
10. Each spouse owns an undivided one-half interest with testamentary power over that half. At death the decedent may devise his or her one-half of the community; the survivor retains the other half. Community property is therefore not a survivorship regime unless the spouses elect a survivorship form by statute.
11. Community property with right of survivorship is a statutory hybrid. Available in Alaska, Arizona, California, Idaho, Nevada, Texas, Washington, and Wisconsin in varying forms, it preserves community character for tax purposes while adding a non-probate transfer to the survivor.
12. The federal tax consequence is the double basis adjustment. I.R.C. § 1014(b)(6) adjusts the basis of the entire community — both halves — to fair market value at the first spouse's death, a result unavailable to joint tenants or tenants by the entirety under I.R.C. § 2040(b).
13. Quasi-community property solves the migration problem. Property acquired in a common-law state that would have been community had it been acquired in the forum is treated as community for purposes of dissolution and, in some states, at death — but only upon the triggering event.

• Define community property and explain why it constitutes a marital property regime rather than a form of concurrent ownership.
• Trace the descent of the system from Roman and Visigothic law through Las Siete Partidas and Spanish colonial and Mexican law into the American states.
• Identify the community-property jurisdictions, the elective and option jurisdictions, and the practical significance of the distinction.
• Characterize property as community, separate, or quasi-community by reference to the time, source, and manner of acquisition.
• State the community presumption, the burden of rebuttal, and the special presumptions governing title, gifts between spouses, and joint-form acquisitions.
• Apply direct tracing and family-expense tracing to commingled funds, and distinguish tracing from reimbursement.
• Apply the apportionment formulas — Pereira, Van Camp, and the Moore/Marsden framework — to separate businesses and to property acquired with mixed funds.
• Explain the modern writing requirements for transmutation and the enforceability standards for premarital and marital agreements under the UPAA and UPMAA.
• Describe equal management, the joinder requirements, and the fiduciary duties spouses owe one another with respect to community assets.
• Determine which assets a creditor may reach for a community debt and for a separate debt of one spouse.
• Distinguish equal division on dissolution from equitable division, and identify the reimbursement claims that arise on divorce.
• Explain the devolution of community property at death, the survivor's one-half, and the operation of community property with right of survivorship.
• State the federal tax consequences of community characterization, including the double basis adjustment under I.R.C. § 1014(b)(6).
• Advise on recording practice and estate planning for spouses moving into or out of a community-property jurisdiction.

The community-property regime is overwhelmingly statutory. There is no national body of community-property law and no Restatement of it; each jurisdiction's family, probate, and recording codes govern, and the decisions interpret those codes. The authorities below are the principal reference points used throughout this chapter.

• State community-property statutes. Cal. Fam. Code §§ 760, 770, 771, 850–853, 910–916, 1100–1103, 2550–2581; Tex. Fam. Code §§ 3.001–3.003, 3.101–3.104, 3.202, 7.001; Ariz. Rev. Stat. §§ 25-211 to 25-218; Wash. Rev. Code ch. 26.16; Nev. Rev. Stat. ch. 123; Idaho Code ch. 32-9; N.M. Stat. ch. 40, art. 3; La. Civ. Code arts. 2325–2437; Wis. Stat. ch. 766.
• Quasi-community property. Cal. Fam. Code § 125; Cal. Prob. Code §§ 66, 101, 6401(b); Ariz. Rev. Stat. § 25-318(A); Wash. Rev. Code § 26.16.220; Idaho Code § 15-2-201.
• Survivorship community property. Tex. Est. Code §§ 111.001–112.252; Ariz. Rev. Stat. § 33-431(C); Cal. Civ. Code § 682.1; Nev. Rev. Stat. § 111.064; Wis. Stat. § 766.60; Alaska Stat. §§ 34.77.010–34.77.995 (elective community property).
• Marital agreements. Uniform Premarital Agreement Act §§ 1–13 (Unif. Law Comm'n 1983); Uniform Premarital and Marital Agreements Act §§ 1–19 (Unif. Law Comm'n 2012); Cal. Fam. Code §§ 1500–1620; Tex. Fam. Code §§ 4.001–4.106.
• Probate and succession. Uniform Probate Code §§ 2-102A, 2-201 to 2-214, 2-802 to 2-804; Uniform Disposition of Community Property Rights at Death Act §§ 1–9 (Unif. Law Comm'n 1971); Cal. Prob. Code §§ 100, 13500–13660; Tex. Est. Code §§ 201.003, 360.253.
• Recording and title. State recording acts governing the form of spousal deeds, joinder in conveyances of homestead and community realty, and affidavits of survivorship: e.g., Tex. Prop. Code § 13.001; Cal. Civ. Code §§ 1093, 1214.
• Federal law. I.R.C. §§ 1014(b)(6), 1041, 2033, 2056, 2523, 6013, 66; 26 U.S.C. § 6321 (tax lien); 11 U.S.C. §§ 541(a)(2), 522(b)(3)(B), 524(a)(3) (community property in bankruptcy); 10 U.S.C. § 1408 (military retired pay); 29 U.S.C. § 1056(d)(3) (qualified domestic relations orders).
• Historical civil-law sources. Fuero Juzgo (Lex Visigothorum), bk. IV; Fuero Real (1255); Las Siete Partidas, Partida IV, tit. XI (dowry and marital gains); Novísima Recopilación, bk. X, tit. IV; Recopilación de Leyes de los Reynos de las Indias (1680); Mexican decrees continued in force by the Treaty of Guadalupe Hidalgo, art. VIII (1848).

Secondary authority is used here only to organize and explain the primary sources. Where a secondary text states a rule, the reader should verify the rule against the governing statute of the jurisdiction concerned.

• William Q. de Funiak & Michael J. Vaughn, Principles of Community Property (2d ed. 1971) — the standard comparative treatise and the principal English-language account of the Spanish sources.
• Grace Ganz Blumberg, Community Property in California (7th ed. 2016).
• Joseph W. McKnight & William A. Reppy, Jr., Texas Matrimonial Property Law (2d ed. 1983).
• Thomas R. Andrews et al., Washington Community Property Deskbook (4th ed. 2014).
• Katherine Shaw Spaht & Richard D. Moreno, Matrimonial Regimes (Louisiana Civil Law Treatise, 4th ed. 2013).
• James Kent, 2 Commentaries on American Law *129–*179 (1827) — on the common-law marital estates against which the civil-law regime is contrasted.
• 2 Frederick Pollock & F. W. Maitland, The History of English Law Before the Time of Edward I 399–436 (2d ed. 1898) — coverture and the common-law alternative.
• A. W. B. Simpson, A History of the Land Law (2d ed. 1986) — the estate framework of Chapters 8 through 18.
• Hans W. Baade, The Form of Marriage in Spanish North America, 61 Cornell L. Rev. 1 (1975); Joseph W. McKnight, The Spanish Legacy to Texas Law, 3 Am. J. Legal Hist. 222 (1959).
• Charles Donahue, Jr., What Causes Fundamental Legal Ideas? Marital Property in England and France in the Thirteenth Century, 78 Mich. L. Rev. 59 (1979).

Community property is the property acquired by either spouse during marriage, other than by gift, devise, or descent, in which each spouse owns a present, existing, and equal undivided one-half interest. The definition is statutory in every American jurisdiction that employs the system. California states it in two sentences: all property acquired by a married person during the marriage while domiciled in the state is community property, Cal. Fam. Code § 760, and the respective interests of the spouses are present, existing, and equal interests, id. § 751. Texas reaches the same result by defining separate property and declaring the remainder community. Tex. Fam. Code §§ 3.001–3.002.

Two features of that definition distinguish community property from everything examined in Chapters 16 through 18. The first is that it operates by acquisition rather than by conveyance. No deed is required to create community property and no words of grant will avoid it: property purchased with community earnings is community whether the deed names one spouse, both, or a third-party nominee, subject to the presumptions and reimbursement rules developed below. The second is that it is comprehensive. Every asset a married couple owns has a character — community, separate, or a proportionate mixture of the two — and that character is assigned by law from the moment of acquisition, whether or not anyone ever asks the question.

The consequence is that community property is best described as a regime of marital property classification. Ownership is only one of the four questions it answers. The others are management, which asks who may deal with the asset during marriage; liability, which asks whose creditors may reach it; and division, which asks how it passes at dissolution or at death. A student who approaches community property as though it were a fourth concurrent estate, to be placed alongside tenancy in common, joint tenancy, and tenancy by the entirety, will find the doctrine incoherent, because the questions it answers are not the questions those estates answer.

A concurrent estate is a form of title. It arises from an instrument, it attaches to a particular thing, and its incidents — unity of possession, severability, survivorship — are incidents of that thing. Two persons may hold Blackacre as joint tenants and the next parcel as tenants in common; the estates are independent, and the relationship between the owners has no bearing beyond the four corners of each deed.

A marital property regime is a status. It arises from the marriage, it attaches to the spouses rather than to any particular asset, and it applies to everything the spouses acquire from the date of marriage until the community terminates. Its incidents are not incidents of a thing but obligations between persons: a duty of disclosure, a duty of good faith in management, an accounting on dissolution. This is why the community-property statutes appear in family codes rather than in property codes, and why an analysis of a community asset always begins with the marital timeline rather than with the chain of title.

The distinction has practical bite in three recurring situations. First, title in one spouse's name alone does not make the asset separate; the community presumption applies notwithstanding the deed. Second, a spouse may hold a fractional common-law estate — a one-third tenancy in common inherited from a parent — and that fractional interest will be separate property; the two systems operate on different planes and may be layered upon each other. Third, when spouses domiciled in a community-property state take title in joint tenancy, the courts must reconcile a common-law form with a civil-law regime, and the statutes generally resolve the conflict in favor of community characterization for purposes of division on dissolution. Cal. Fam. Code § 2581.

The organizing idea of the system is that marriage creates an economic partnership to which each spouse contributes labor, skill, and industry, and whose acquisitions belong to both regardless of which spouse earned them. The idea is expressed in the civilian sources as the community of gains — the gananciales — and it explains the rule that the earnings of each spouse during marriage are community property, from which nearly every other characterization rule follows. The homemaker's contribution is treated as equivalent to the wage earner's; this equivalence is the moral premise of the regime and the reason it long preceded the common-law states in protecting non-earning spouses.

The community has a beginning and an end. It begins at the marriage — not at cohabitation, and not at engagement, though a putative-spouse doctrine protects a party who participates in a void or voidable marriage in good faith. It ends at the death of a spouse, at the entry of a decree of dissolution or legal separation, or, in several jurisdictions, at the date of separation, defined as the point at which one spouse expresses an intent to end the marriage and conduct consistent with that intent follows. Cal. Fam. Code § 70. Between those dates the labor of the spouses belongs to the community; outside them, it does not. Fixing the date of separation is therefore not a formality but a characterization event, because earnings after that date are the earning spouse's separate property.

A corollary of the community-of-labor principle governs the entire law of businesses and professional practices. Where a spouse owns a separate business and works in it during marriage, the business generates two returns: the return on separate capital, which is separate, and the return on community labor, which is community. Every apportionment formula examined in Part IV is an attempt to divide those two returns.

Classical Roman law was not a community system. Marriage sine manu left the wife's property in her own patrimony or in that of her paterfamilias, subject to the dos delivered to the husband to support the burdens of matrimony and returnable on the dissolution of the marriage. The dotal system was thus a regime of separate estates with a fund for the maintenance of the household. What Rome supplied to the later law was not the community but the analytical vocabulary — patrimony, dos, donatio propter nuptias, restitution on dissolution — through which the later community was described.

The community of gains appears in the Germanic customary law of the migration period and reaches the Iberian peninsula with the Visigoths. The Lex Visigothorum, later rendered in Castilian as the Fuero Juzgo, provided that property acquired by the joint industry of the spouses during the marriage was to be divided between them or their heirs in proportion to the property each brought to the marriage; later law made the division equal. The essential ideas were already present: property brought to the marriage or received by succession remained the acquiring spouse's own, while acquisitions during marriage were shared.

The synthesis of Roman form with Germanic substance is the characteristic achievement of medieval Spanish law and the reason the community system is properly called civilian rather than Germanic. The dotal apparatus was retained for the wife's separate estate; the community of gains was superimposed upon it; and the resulting structure — separate property defined by source, community property defined by acquisition during marriage — is the structure of the modern American statutes.

The Fuero Real of 1255 declared that all that the husband and wife earn or purchase together shall belong to both in equal shares, and that what either brings to the marriage or acquires by inheritance shall be that spouse's own. Las Siete Partidas, compiled under Alfonso X and eventually the most influential of the Castilian compilations, treated dowry, arras, and marital gains in Partida IV, title XI, and supplied the doctrinal exposition on which later jurists relied. The Leyes de Toro of 1505 and the Novísima Recopilación consolidated the rules, and it is in this form that the law crossed the Atlantic.

The Recopilación de Leyes de los Reynos de las Indias of 1680 governed the Spanish possessions in America, with Castilian law supplying the residue. The community of gains accordingly applied in New Spain, and through New Spain in Louisiana, Texas, New Mexico, Arizona, and California. Two features of the colonial law deserve notice because they persisted. The first is the wife's protected position: her dotal and paraphernal property remained her own, she was entitled to an accounting of the gains, and certain alienations required her consent. The second is the strong presumption of community, which the colonial courts applied to all property held at the dissolution of the marriage and which survives as the general presumption in every American community-property state.

The Spanish sources were not merely historical background for the American courts of the nineteenth century. They were law. Texas, California, and Louisiana courts cited Las Siete Partidas, Febrero, Matienzo, and Azevedo as authority in deciding characterization questions, and de Funiak's twentieth-century treatise is in large part an argument that the American statutes should be read in light of those sources rather than assimilated to common-law categories.

Mexican independence in 1821 did not disturb the substance of the marital property law; the Spanish compilations remained in force in the northern provinces, subject to local decrees. When the Republic of Texas organized its legal system it retained the community system while adopting the common law generally, an express choice recorded in the statutes of 1840 and 1848 and later in the constitutional provisions defining separate property. The choice was deliberate: the framers regarded the community regime as more just to wives than the coverture rules of the common law, and as already embedded in existing land titles.

The cession of the Mexican territories by the Treaty of Guadalupe Hidalgo in 1848 raised the same question in California, New Mexico, and Arizona. Each retained the community system, California by constitutional provision in 1849 and by early statute, while adopting the common law as the general rule of decision. Louisiana, whose civil-law inheritance was both French and Spanish, retained the community in its Civil Code. Nevada, Idaho, and Washington adopted the system by territorial legislation, in part on the model of California and in part because the Spanish rules were familiar in the mining and agricultural West.

Two later episodes complete the account. The first is federal tax law. Before 1948 residents of community-property states enjoyed a marked income-tax advantage because each spouse reported half the community income; the resulting pressure led several common-law states to enact community-property statutes in the 1940s, and led Congress to respond with the joint return in the Revenue Act of 1948, after which those states promptly repealed their statutes. The episode is a reminder that the community system's boundaries have been shaped by federal fiscal policy as much as by doctrine. The second is the Uniform Marital Property Act of 1983, adopted only by Wisconsin, which recast the community system in modern statutory language and demonstrated that the regime could be received by legislation in a state with no Spanish inheritance whatever.

Nine states apply the community system as their default marital property regime: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. Puerto Rico and Guam apply civil-law community regimes of their own. In each of these jurisdictions the regime applies to spouses domiciled there, and domicile — not the situs of the asset, except for real property — is the controlling connecting factor for characterization of personalty.

A second and quite different category consists of the elective or option jurisdictions. Alaska, by the Alaska Community Property Act of 1998, Tennessee, Florida, Kentucky, and South Dakota permit spouses to opt into a community-property regime, generally by transferring assets to a community-property trust with a qualifying trustee connection to the state. The motive is almost entirely federal-tax driven: the double basis adjustment of I.R.C. § 1014(b)(6). The scope of the election is narrow, its effectiveness for non-domiciliaries is not settled by authority, and the resulting arrangement is a trust holding designated assets rather than a marital regime governing the couple's acquisitions.

The distinction between default and elective jurisdictions matters to the practitioner in two ways. In a default jurisdiction, characterization occurs automatically and the practitioner's task is to prove it. In an elective jurisdiction, characterization occurs only if the couple has executed the required instrument, and the practitioner's task is to create it and to preserve evidence that it was validly created. The two situations call for opposite habits of mind.

Characterization is the process of assigning to each asset one of three characters: community, separate, or quasi-community. It is governed by three inquiries, applied in order. When was the asset acquired — before marriage, during marriage, or after separation? What was the source of the consideration — community earnings, separate funds, or a gratuitous transfer? And has the character been altered by a valid agreement, by a transmutation, or by the operation of a presumption the parties have failed to rebut?

The inception-of-title rule, followed in Texas and in most jurisdictions for real property, fixes the character of an asset at the moment the right to it arises, so that later payments from funds of a different character generate reimbursement claims rather than a change of character. California applies a pro-rata apportionment approach to installment acquisitions, dividing ownership in proportion to the funds contributed. The difference is consequential: on the same facts — a house purchased before marriage with a mortgage paid down during marriage from earnings — Texas will find the house entirely separate with a community reimbursement claim, while California will find a proportionate community interest that shares in appreciation under Moore/Marsden.

Characterization is a question of fact resolved on the whole record, but the presumptions carry most cases. Because the community presumption is strong and the evidentiary burden falls on the spouse asserting a separate claim, the practical law of characterization is very largely a law of proof: contemporaneous documents, account statements, deeds, and the tracing that can be constructed from them.

Separate property consists of property owned by a spouse before marriage; property acquired during marriage by gift, devise, or descent; property acquired after the date of separation; property acquired in exchange for separate property; and, in the majority of jurisdictions, the rents, issues, and profits of separate property. Cal. Fam. Code §§ 770–771; Tex. Fam. Code § 3.001. Separate property is managed solely by its owner, is subject to that spouse's testamentary disposition in full, and is generally beyond the reach of the other spouse's separate creditors.

The treatment of income from separate property is the principal point of divergence among the states. The majority — California, Arizona, Nevada, New Mexico, Washington — treat rents, issues, and profits of separate property as separate, on the theory that fruits follow the capital. The civil-law minority — Texas, Louisiana, and Idaho — treat such income as community, on the theory that all revenue accruing during the marriage belongs to the community; Louisiana permits the owner to reserve the fruits as separate by a declaration recorded in the conveyance records. La. Civ. Code art. 2339. In every jurisdiction, however, income attributable to the community labor of a spouse is community, whatever the character of the capital employed.

Certain assets require particular attention. Personal-injury recoveries are commonly characterized by reference to the component of the award: lost earnings during marriage are community, while compensation for pain and suffering or for disfigurement is often separate. Cal. Fam. Code § 780; Tex. Fam. Code § 3.001(3). Employment benefits accrued during marriage — pensions, deferred compensation, stock options, restricted stock — are community to the extent earned by services rendered during marriage, apportioned by a time rule. Disability benefits and workers' compensation are characterized by what they replace. Goodwill of a professional practice is community to the extent it was developed during marriage, though the jurisdictions differ sharply on whether personal goodwill is a divisible asset at all.

The general community presumption applies to all property possessed by either spouse during the marriage or on dissolution. Tex. Fam. Code § 3.003 requires clear and convincing evidence to rebut it; California applies the same standard for most purposes. The presumption is a rule of substantive law as well as of proof: where the evidence is in equipoise, or where the record is silent, the property is community.

Several special presumptions overlay the general rule. A title presumption may arise from the form in which property is held, though modern statutes have curtailed it: California's § 2581 provides that property acquired during marriage in joint form is presumed community for purposes of division on dissolution, rebuttable only by a written statement in the title instrument or a written agreement. An interspousal-gift presumption arises where one spouse takes title in the other's name alone, though it too now requires a writing in California under § 852. A presumption of undue influence arises where one spouse obtains an advantage over the other in a transaction between them, shifting the burden to the advantaged spouse to show the transaction was freely and voluntarily made with full knowledge of the facts. Cal. Fam. Code § 721.

Practically, the interaction of the presumptions determines outcomes. A spouse who deposits an inheritance into a joint account and later withdraws it to buy a family residence titled in both names must contend with the community presumption, the joint-form presumption, and, if the transaction is characterized as a transmutation, the writing requirement. Any one of them may defeat the separate claim, and each must be answered separately.

Quasi-community property is property acquired by either spouse while domiciled elsewhere that would have been community property had the acquiring spouse been domiciled in the forum at the time of acquisition. Cal. Fam. Code § 125; Ariz. Rev. Stat. § 25-318(A). The doctrine addresses the migration problem: a couple who accumulate wealth in a common-law state, where title governs and the non-titled spouse's protection lies in equitable-distribution law, and who then move to a community-property state, where equitable distribution is unavailable and the titled spouse would otherwise own everything.

The characterization is contingent, not immediate. Quasi-community property remains, during the marriage, the separate property of the acquiring spouse for purposes of management and creditor exposure; it becomes subject to division as though it were community only upon a triggering event — dissolution in every quasi-community jurisdiction, and death in California, where Probate Code § 101 gives the surviving spouse one-half of the decedent's quasi-community property. The distinction avoids the constitutional objection that would attend an immediate divestiture of vested rights on the couple's arrival in the state.

The converse migration — from a community-property state to a common-law state — is governed in many states by the Uniform Disposition of Community Property Rights at Death Act, which preserves the community character of property brought into the new domicile so that one-half belongs to the survivor and one-half passes under the decedent's estate. Where the Act has not been adopted, the general choice-of-law rule that the character of personalty is fixed at acquisition produces substantially the same result, though the machinery for establishing it in the new forum's probate court is less convenient.

Commingling occurs when funds of different characters are combined so that the identity of the separate contribution is no longer apparent on the face of the record. Commingling does not by itself convert separate property into community property. What it does is engage the community presumption as to the whole, so that the separate claim survives only if it can be traced. The proposition is stated in Texas as the rule that separate property retains its character through any number of exchanges so long as it can be traced, and in California as the rule that a separate contribution may be established by adequate records.

Two tracing methods are recognized. Direct tracing establishes that at the moment of the disputed expenditure the account contained separate funds sufficient to make the purchase, and that the spouse intended to use those funds for that purpose. Family-expense or exhaustion tracing establishes that community funds in the account had already been consumed by family living expenses at the time of the expenditure, so that the purchase must necessarily have been made with separate funds. The methods are alternatives; both require records. A spouse who cannot produce the account history will fail, and the entire commingled fund will be treated as community.

Where tracing fails as to ownership but a contribution is established, reimbursement supplies a residual remedy. A community estate that discharges the principal of a debt secured by separate property is entitled to reimbursement; a separate estate that improves community property may claim reimbursement for the enhancement in value or the cost, according to the local rule; payments of interest, taxes, and insurance are generally not reimbursable, on the view that they are offset by the use of the asset. Cal. Fam. Code § 2640; Tex. Fam. Code §§ 3.402–3.406. Reimbursement is a monetary claim against the benefited estate, not an ownership interest, and it therefore does not share in appreciation.

Where a spouse's separate capital and the community's labor both contribute to an increase in value, the increase must be apportioned. Two classical formulas, both from California and both widely followed in substance, perform the apportionment in opposite directions. Under Pereira v. Pereira, 156 P. 1 (Cal. 1909), the court allocates to the separate estate a fair return on the separate capital and treats the remainder of the growth as community; it is the appropriate method where the spouse's personal management and skill were the principal cause of the growth. Under Van Camp v. Van Camp, 199 P. 885 (Cal. Ct. App. 1921), the court allocates to the community the reasonable value of the spouse's services, less family expenses drawn from the business, and treats the remainder as separate; it is the appropriate method where the growth is attributable to the character of the capital investment or to market forces.

For real property acquired before marriage and paid for in part with community funds, the Moore/Marsden framework — In re Marriage of Moore, 618 P.2d 208 (Cal. 1980), and In re Marriage of Marsden, 181 Cal. Rptr. 910 (Ct. App. 1982) — gives the community a pro-rata ownership interest measured by the ratio of community principal payments to the total purchase price, entitling the community to share in appreciation during the marriage while leaving pre-marital appreciation to the separate estate. Texas, adhering to inception of title, reaches a different result: the property remains separate and the community receives reimbursement for principal reduction only, without participation in appreciation.

The choice among formulas is a matter of characterizing the cause of the increase, and it is proved by evidence of the spouse's role in the enterprise, the nature of the business, the compensation actually drawn, and comparable market returns. The formulas are not competing rules of law so much as competing factual hypotheses, and a court is free to adopt whichever most nearly achieves substantial justice on the record before it.

Transmutation is the change of the character of property by agreement of the spouses: separate to community, community to separate, or the separate property of one to the separate property of the other. Spouses have long possessed this power, which is an aspect of their general capacity to contract with one another concerning property, and its exercise is subject to the fiduciary constraints examined in Part V.

The modern law is dominated by formality. California abrogated oral and implied transmutation in 1985: a transmutation is not valid unless made in writing by an express declaration that is made, joined in, consented to, or accepted by the spouse whose interest is adversely affected. Cal. Fam. Code § 852. The declaration must state on its face that the character or ownership of the property is being changed; a deed reciting a conveyance without such language will not suffice, and extrinsic evidence of intent is inadmissible to supply the deficiency. A narrow exception preserves informal gifts between spouses of personal items of relatively insubstantial value. Id. § 852(c).

Texas requires a written agreement signed by both spouses for a partition or exchange of community property, Tex. Fam. Code § 4.102, and, following a 1999 constitutional amendment, permits spouses to agree in writing that separate property shall become community property, id. § 4.202, with disclosure requirements attached. The pattern across jurisdictions is uniform in principle: transmutation is available, it must be in writing, and the writing must be unambiguous. The doctrine's practical function is protective — it prevents a spouse from establishing, years later and by testimony alone, that the other gave away an interest in a major asset.

Spouses and prospective spouses may vary the statutory regime by agreement. The Uniform Premarital Agreement Act of 1983, adopted in more than half the states, permits parties to contract with respect to the rights and obligations in property, the disposition of property on separation, dissolution, or death, the making of a will, and the choice of governing law, but forbids any provision adversely affecting a child's right to support. The agreement must be in writing and signed by both parties, and it is enforceable without consideration.

Enforcement standards are the heart of the subject. Under the UPAA an agreement is unenforceable if the party against whom enforcement is sought proves that it was not executed voluntarily, or that it was unconscionable when executed and that party was not provided fair and reasonable disclosure, did not waive disclosure, and did not have or reasonably could not have had adequate knowledge of the other's property and obligations. The Uniform Premarital and Marital Agreements Act of 2012 restates these principles, extends them to agreements made during marriage, and adds explicit requirements of access to independent counsel and of an understandable disclosure. California's statute imposes further protections: a seven-day period between presentation and signing, representation by independent counsel or an express waiver, and a rule that a spousal-support provision is unenforceable if the party challenging it was not represented by independent counsel. Cal. Fam. Code §§ 1615, 1612(c).

Postnuptial agreements raise an additional difficulty absent from premarital agreements: the parties are already in a confidential relationship, so the interspousal fiduciary duty and the presumption of undue influence apply to the negotiation itself. An agreement by which one spouse obtains an advantage will be scrutinized, and the advantaged spouse bears the burden of showing full disclosure and free consent. The practitioner should therefore document disclosure, independent representation, and deliberation with greater care in a marital agreement than in a premarital one.

Until the 1970s the community-property statutes vested management of the community in the husband. That regime was abolished, partly by legislation and partly under the compulsion of equal-protection decisions culminating in Kirchberg v. Feenstra, 450 U.S. 455 (1981), which struck down the Louisiana head-and-master rule permitting a husband to mortgage community property without his wife's consent. The modern rule is equal management: either spouse, acting alone, may manage and control community personal property with the same power of disposition the acting spouse has over separate property. Cal. Fam. Code § 1100(a).

Equal management is qualified by joinder requirements designed to protect the non-acting spouse in the transactions that matter most. Both spouses must join in any instrument conveying, encumbering, or leasing community real property for more than a year. Id. § 1102. Neither spouse may make a gift of community property or dispose of it for less than fair and reasonable value without the written consent of the other. Id. § 1100(b). A spouse who operates a community business has primary management but must give prior written notice before disposing of substantially all of its assets. Id. § 1100(d). Texas, which uses a system of sole and joint management categories keyed to which spouse would have owned the asset if unmarried, reaches comparable protections through Tex. Fam. Code §§ 3.102–3.104.

The remedies for a violation are set-aside and accounting. An unauthorized gift may be set aside in whole during the marriage at the suit of the non-consenting spouse, and as to one-half after the donor's death; an unauthorized conveyance of community realty is voidable, subject to statutes of limitation and to protections for bona fide purchasers who rely on the record. The interaction of these remedies with the recording system is examined in Part VII.

Spouses stand in a confidential relationship with respect to community property and owe each other the duty of the highest good faith and fair dealing. Cal. Fam. Code § 721(b) expressly imposes the standard governing non-marital business partners: a duty to account for any benefit derived from a transaction concerning community property, a duty to hold as trustee any profit so derived, and a duty to provide access upon request to all books and records concerning the community. The duty continues after separation and until the assets are divided. Id. § 1100(e).

Breach carries substantive consequences. Where the breach amounts to oppression, fraud, or malice, the remedy may include an award to the injured spouse of one hundred percent — not merely one-half — of the undisclosed or transferred asset. Id. § 1101(h). Undisclosed assets discovered after judgment may be set aside or divided, in some states without limitation of time. The disclosure obligation in dissolution proceedings, enforced by preliminary and final declarations of disclosure, is a procedural implementation of the same duty.

The fiduciary characterization also explains the presumption of undue influence in interspousal transactions. Where one spouse secures an advantage — a transmutation, a refinance moving an asset into one name, a waiver of a retirement interest — the transaction is presumed to be the product of undue influence, and the advantaged spouse must prove that the other acted freely, with full knowledge of the facts and a complete understanding of the effect. The presumption is the practical mechanism through which the fiduciary standard is enforced in litigation, and it is the reason that documentation of disclosure is indispensable to the validity of interspousal dealings.

Creditor exposure follows characterization, with variations that make the local statute indispensable. The general rule is that the community estate is liable for a debt incurred by either spouse before or during the marriage, regardless of which spouse has management and control and regardless of whether one or both are parties to the debt. Cal. Fam. Code § 910. The separate property of the debtor spouse is also liable. The separate property of the non-debtor spouse is not liable for the other's debts, except for debts incurred for the necessaries of life during the marriage under the doctrine of necessaries, id. §§ 914–915.

Two refinements are important. First, the earnings of a non-debtor spouse are protected in some jurisdictions from liability for the debtor spouse's premarital debts if held in a deposit account to which the debtor spouse has no access and not commingled. Id. § 911. Second, Texas ties creditor access to the managerial category: a creditor of one spouse may reach that spouse's separate property, that spouse's sole-management community property, and joint-management community property, but not the other spouse's sole-management community property, except for tortious conduct or necessaries. Tex. Fam. Code § 3.202. Practitioners in Texas must therefore analyze not only whether property is community but which managerial class it occupies.

Federal law supplies overrides. A federal tax lien under 26 U.S.C. § 6321 attaches to the delinquent taxpayer's interest in community property as defined by state law, and where state law gives the taxpayer management rights the Service may generally reach the entire community asset. In bankruptcy, 11 U.S.C. § 541(a)(2) draws all community property under the sole, equal, or joint management of the debtor into the estate even though the non-filing spouse is not a debtor, and § 524(a)(3) provides the non-filing spouse a corresponding community-property discharge protecting after-acquired community property from pre-petition community claims. The combined effect is that one spouse's bankruptcy can administer the whole community — a point of real significance in advising married debtors.

On dissolution the community estate is divided. California, Louisiana, New Mexico, and (subject to a just-and-right standard) Texas approach the question through the community's premise of equal ownership: California requires an equal division of the community estate unless the parties agree otherwise in writing or on the record. Cal. Fam. Code § 2550. Arizona, Idaho, Nevada, Washington, and Wisconsin authorize an equitable division, which in practice is usually equal but permits deviation for economic misconduct, disparate need, or the character of the assets. Texas directs a division that is just and right, having due regard for the rights of each party and any children, Tex. Fam. Code § 7.001, and forbids the divestiture of separate real property.

Division is preceded by characterization and valuation, in that order. Separate property is confirmed to its owner and is not divisible. Community assets and community liabilities are valued as near as practicable to the time of trial, though the date of valuation may be adjusted for assets whose value has changed through one spouse's post-separation labor. Reimbursement claims — for community funds used to improve separate property, for separate funds contributed to community acquisitions under Cal. Fam. Code § 2640, for post-separation payments on community obligations under the Epstein and Watts line of cases — are then applied as offsets against the divisible estate.

Certain assets require specialized division mechanics. Retirement benefits are divided by a qualified domestic relations order under 29 U.S.C. § 1056(d)(3), and military retired pay is subject to the framework of 10 U.S.C. § 1408. A closely held business is commonly awarded to the operating spouse with an equalizing payment. The family residence may be sold, awarded with an offset, or made subject to a deferred-sale order where the children's housing needs justify it. In each case the property-law question — what is the character and extent of the community interest — is prior to the family-law question of how the interest should be allocated.

At death the community terminates and divides. The decedent's one-half of the community passes by will or, in intestacy, under the statute; the survivor retains the other one-half in his or her own right, not as an heir. Cal. Prob. Code § 100. Intestate succession statutes in the community-property states typically pass the decedent's community half to the surviving spouse, with the result that the survivor holds the whole; Texas does so only where all of the decedent's descendants are also descendants of the survivor, and otherwise passes the decedent's half to the descendants. Tex. Est. Code § 201.003.

The community-property states have no elective share, and they do not need one: the survivor's protection is ownership of one-half of everything the couple accumulated, which is generally more valuable than a common-law forced share. The Uniform Probate Code accommodates the difference by excluding community property from the augmented estate in § 2-201 and by providing an intestate share tailored to community property in § 2-102A. Where a couple has migrated from a community-property state, the Uniform Disposition of Community Property Rights at Death Act preserves the community character so that the survivor's half is not swept into the decedent's estate.

Administration is simplified in most community-property states. California permits community property passing to the surviving spouse to be confirmed by a spousal property petition rather than full administration, Cal. Prob. Code §§ 13500–13660, and Texas allows the surviving spouse to administer the community without formal probate in defined circumstances. The decedent's power of testamentary disposition is confined to his or her one-half; a will purporting to dispose of the whole puts the survivor to an election between taking under the will and asserting community rights — the widow's election, which has significant transfer-tax consequences and should never be created inadvertently.

Community property with right of survivorship is a statutory hybrid combining the tax characteristics of community property with the non-probate transfer of joint tenancy. The spouses hold community property, so each owns a present undivided one-half and the asset is community for purposes of management, creditor exposure, and federal tax; but they have agreed in the prescribed form that on the death of the first the whole shall vest in the survivor without administration. Ariz. Rev. Stat. § 33-431(C); Cal. Civ. Code § 682.1; Tex. Est. Code §§ 112.051–112.054; Nev. Rev. Stat. § 111.064; Wis. Stat. § 766.60.

The form must be created with precision. The statutes generally require an express written agreement or a deed containing the statutory words; a recital of joint tenancy will not do, and neither will a recital of community property alone. Texas requires a written agreement signed by both spouses containing words such as “with right of survivorship,” and permits the agreement to be revoked by written instrument. The election is revocable during the joint lives of the spouses, and it is defeated by dissolution.

The advantage over joint tenancy is fiscal and decisive. Property held in joint tenancy by spouses is included as to one-half in the first decedent's gross estate under I.R.C. § 2040(b) and receives a basis adjustment only as to that half. Community property, including community property with right of survivorship, receives under I.R.C. § 1014(b)(6) an adjustment as to the entire asset, including the survivor's half. For appreciated property this doubles the step-up and can eliminate the entire built-in gain on a subsequent sale. The advantage over ordinary community property is procedural: title clears at the first death by affidavit rather than by probate. The disadvantage of both survivorship forms is the same as that noted in Chapter 18 — the asset is removed from the first decedent's dispositive control, which defeats credit-shelter and disclaimer planning.

Community characterization has consequences under three federal regimes. In income tax, each spouse is treated as owning half the community income, a rule that mattered greatly before the joint return and that continues to matter for spouses filing separately, for the relief provisions of I.R.C. § 66 governing spouses living apart, and for the allocation of income after separation. Transfers between spouses are non-recognition events under I.R.C. § 1041, whether incident to divorce or otherwise.

In estate and gift tax, the decedent's gross estate includes only the decedent's one-half of the community under I.R.C. § 2033, in contrast to the joint-tenancy inclusion rule of § 2040(b) and the full inclusion that would follow from sole ownership. The marital deduction of § 2056 and the gift-splitting and interspousal-gift provisions of § 2523 apply as elsewhere, but the community's automatic equalization of the spouses' estates often makes affirmative equalization planning unnecessary.

The basis rule is the most consequential of all. I.R.C. § 1014(b)(6) provides that where at least one-half of the whole of the community property is includible in the decedent's gross estate, the surviving spouse's one-half is also treated as having been acquired from the decedent, and therefore takes a basis equal to fair market value at death. The entire asset is stepped up. For a couple holding long-held appreciated real estate or securities, the difference between community and joint-tenancy characterization can be the difference between a fully eliminated capital gain and one that is only halved. This single provision explains the elective community-property trusts of Alaska, Tennessee, and their imitators, and it should be the first consideration when advising a couple who are moving from a community-property state to a common-law state, since an unconsidered retitling can forfeit the benefit.

The recording system in a community-property state must accommodate a regime in which the record does not necessarily disclose the character of ownership. Because community character arises from the source of the consideration rather than from the deed, a deed to one spouse alone may convey community property, and a purchaser cannot determine the character from the instrument. The statutes therefore protect record reliance: a bona fide purchaser for value who takes from the spouse of record without notice of the community claim is generally protected, and the non-joining spouse's remedy lies against the acting spouse rather than against the purchaser. The joinder requirements for conveyances of community realty operate as the front-line protection.

Sound conveyancing practice in these jurisdictions accordingly follows three rules. First, recite the character intended: “as community property,” “as community property with right of survivorship,” or “as the sole and separate property of” the named spouse, with the other spouse joining in a quitclaim or interspousal transfer deed where a separate character is intended. Second, obtain joinder in every conveyance, mortgage, and long-term lease of community real property, and in homestead transactions where the local constitution or statute requires it. Third, at the first death, clear title by the statutory mechanism — an affidavit of survivorship for survivorship community property, a spousal property petition or affidavit of heirship for ordinary community property — rather than leaving the record to be reconstructed years later.

Title insurers in community-property states will ordinarily require evidence of marital status, joinder of the non-titled spouse, or a recorded interspousal transfer deed, and their underwriting requirements are in practice the most reliable statement of local conveyancing custom. A practitioner unfamiliar with the jurisdiction should treat those requirements as the operative checklist.

Planning for a community-property couple begins with an inventory of characterization. Every significant asset should be identified as community, separate, or mixed, and the evidence supporting a separate claim should be assembled and preserved while the records still exist. The single most common planning failure in these jurisdictions is not a defective instrument but an unprovable separate-property claim.

The instruments then follow. A joint revocable trust is the standard vehicle: it holds community property as community property, preserves the § 1014(b)(6) double basis adjustment where the trust instrument so provides, avoids probate at both deaths, and permits credit-shelter or disclaimer planning at the first death that a survivorship form would foreclose. Where the couple prefers simplicity, community property with right of survivorship achieves probate avoidance at the first death with no planning flexibility. Where one spouse has significant separate property, separate trusts or separate shares within a joint trust preserve the distinction that community characterization would otherwise blur.

Migration deserves separate attention in both directions. A couple moving into a community-property state should document the character of what they bring, since prior acquisitions remain separate but become subject to quasi-community treatment on dissolution or, in California, at death. A couple moving out should avoid retitling community assets into joint tenancy — a common and costly reflex — and should consider a community-property agreement or trust that preserves the character, together with reliance on the Uniform Disposition of Community Property Rights at Death Act where the destination state has adopted it.

Reform since 1970 has proceeded along four lines. The first is equalization of management, completed by the abolition of the head-and-master rules and confirmed by Kirchberg v. Feenstra. The second is formalization: written transmutation requirements, disclosure obligations in marital agreements, and mandatory declarations of disclosure in dissolution proceedings, all of which substitute documentary proof for testimony about what spouses intended years earlier.

The third is the elaboration of the fiduciary standard. Statutes now state the duty expressly, prescribe access to books and records, and impose enhanced remedies for concealment, including the award of the entire undisclosed asset. The fourth is the tax-driven expansion of the regime beyond its historical territory: the Alaska and Tennessee community-property trusts, the survivorship community-property statutes, and the continuing adoption of the Uniform Disposition of Community Property Rights at Death Act in common-law states. The regime that entered the United States through Spanish colonial administration is now propagated principally by the Internal Revenue Code.

A fifth development is comparative rather than statutory. Common-law states have moved toward the community's result by other means: equitable distribution on divorce achieves a comparable division of marital acquisitions, and the Uniform Marital Property Act was drafted to make the convergence explicit. The two systems remain distinct in their operation during marriage — the community vests ownership immediately, while equitable distribution creates only an inchoate claim maturing at dissolution — but the outcomes on divorce have converged substantially. The persistent differences are at death, where the community's automatic one-half has no common-law analogue, and in taxation, where § 1014(b)(6) has no substitute.

The following comparison consolidates Chapters 16 through 19. It should be read with the caution that the first three columns describe forms of title, while the last describes a regime that operates upon whatever title exists.

Three lessons emerge. First, the community regime is the only one of the four in which ownership is determined by the economics of acquisition rather than by the words of an instrument. Second, it is the only one that imposes an affirmative fiduciary relationship between the owners. Third, it is the only one that produces the double basis adjustment — the reason it is now being exported, by election, into jurisdictions that never received it historically.

Community property is the civil-law marital regime received into American law through Spain and Mexico rather than through England. It rests on the premise that marriage creates an economic community to which each spouse contributes and whose acquisitions belong to both in equal, present, and existing shares. From that premise flow the whole of its doctrine: the community presumption and the clear-and-convincing burden of rebuttal; the definition of separate property by source rather than by use; the survival of separate claims through commingling by tracing; the apportionment of mixed acquisitions under Pereira, Van Camp, and Moore/Marsden; the writing requirements for transmutation and marital agreements; equal management constrained by joinder and by fiduciary duty; community liability for the debts of either spouse; equal or equitable division on dissolution; and the devolution at death of the decedent's one-half by will, with the survivor's one-half held in the survivor's own right.

Its distinctive character is best seen by contrast with Chapters 16 through 18. The common-law concurrent estates are forms of title, created by instruments and analyzed by unities. Community property is a status, created by marriage and analyzed by the timeline and source of acquisition. The estates ask who holds the paper; the community asks who earned the asset. That difference explains why community property cannot be severed, why it is not partitioned, why it carries fiduciary obligations that no cotenancy imposes, and why federal tax law treats it uniquely under I.R.C. § 1014(b)(6) — the provision that is now drawing common-law jurisdictions to offer the regime by election.

Chapters 17 through 19 have examined the principal forms of concurrent and marital ownership. What remains is the law of what happens when co-owners disagree. Shared ownership generates disputes over possession, over the sharing of rents and profits, over the payment of taxes, mortgages, and repairs, over improvements one owner makes and the other did not authorize, and over conduct that permanently diminishes the value of the shared thing. Ultimately it generates the demand to be released from the relationship altogether. Chapter 20 therefore concludes Part VI by examining partition in kind and by sale, accounting for rents and for ouster, contribution for carrying charges, credits for improvements, waste as between cotenants, owelty, and the modern statutory reforms governing the termination of co-ownership — above all the Uniform Partition of Heirs Property Act, which responds to the forced-sale losses that have historically fallen upon families holding land as tenants in common by descent. The Restatement framework likewise treats partition and the remedies among co-owners as the culmination of concurrent-ownership doctrine, and it is with those remedies that Part VI closes.

• William Q. de Funiak & Michael J. Vaughn, Principles of Community Property (2d ed. 1971).
• Grace Ganz Blumberg, Community Property in California (7th ed. 2016).
• Joseph W. McKnight & William A. Reppy, Jr., Texas Matrimonial Property Law (2d ed. 1983).
• Katherine Shaw Spaht & Richard D. Moreno, Matrimonial Regimes (4th ed. 2013).
• Thomas R. Andrews et al., Washington Community Property Deskbook (4th ed. 2014).
• Uniform Premarital and Marital Agreements Act (Unif. Law Comm'n 2012), with Prefatory Note and Comments.
• Uniform Disposition of Community Property Rights at Death Act (Unif. Law Comm'n 1971).
• Joseph W. McKnight, The Spanish Legacy to Texas Law, 3 Am. J. Legal Hist. 222 (1959).
• Hans W. Baade, The Form of Marriage in Spanish North America, 61 Cornell L. Rev. 1 (1975).
• Charles Donahue, Jr., What Causes Fundamental Legal Ideas? Marital Property in England and France in the Thirteenth Century, 78 Mich. L. Rev. 59 (1979).
• Real Law Society Press, Foundations of Property Law (2d ed.), Chapters 16–18 (Concurrent Ownership; Joint Tenancy; Tenancy by the Entirety).