Joint Tenancy

Chapter 16 established the framework common to every concurrent estate: unity of possession, the undivided fractional share, the duty to account, the right of contribution, the law of ouster, and the availability of partition. This chapter develops the first of the specific forms. Joint tenancy differs from tenancy in common in a single but consequential respect — the right of survivorship — and the whole apparatus of the four unities, the rules of creation, and the elaborate modern law of severance exist to determine when that right arises and when it is destroyed. The doctrine repays careful study because survivorship operates automatically, outside probate, and cannot be defeated by will; because severance can occur unilaterally, silently, and by acts that the joint tenants did not understand to have that effect; and because joint tenancy remains, notwithstanding the statutory presumption against it, one of the most widely used devices in American real-estate and banking practice.

1. Joint tenancy is a concurrent estate distinguished by the right of survivorship. Restatement (First) of Property §§ 178–186. On the death of one joint tenant, the surviving joint tenants continue to hold the entire estate; nothing passes to the decedent's heirs, devisees, or personal representative.
2. Survivorship is not inheritance, devise, or descent. The survivor takes by the original conveyance, not from the decedent. The decedent's interest is extinguished rather than transmitted, which is why a will cannot dispose of a joint tenancy interest and why the interest ordinarily escapes probate administration.
3. The common law required four unities: time, title, interest, and possession. The joint tenants must take their interests at the same moment, by the same instrument, in equal and identical shares of the same duration, with each entitled to possession of the whole. Absence of any unity at creation prevents a joint tenancy; destruction of any unity but possession severs one already created.
4. American statutes have reversed the common-law preference. A conveyance to two or more persons creates a tenancy in common unless survivorship is clearly expressed. The drafter must say what he means: “as joint tenants with right of survivorship, and not as tenants in common” is the conventional formula, and in several jurisdictions statutory language is prescribed.
5. Many jurisdictions have relaxed the unities of time and title by statute. Direct conveyances “from A to A and B as joint tenants” are now widely effective without the intervention of a straw, and the modern inquiry increasingly asks whether survivorship was intended rather than whether the four unities were formally satisfied.
6. A joint tenant may freely convey his interest during life, and the conveyance severs. The grantee takes as a tenant in common with the remaining joint tenants; where three or more joint tenants exist, the severance is partial, and the untouched interests continue in joint tenancy among themselves.
7. Whether a mortgage severs depends on the jurisdiction's mortgage theory. In a title-theory state a mortgage by one joint tenant may destroy the unity of title and sever; in the prevailing lien-theory states it does not, and the lien is extinguished as to the decedent's interest if the mortgaging joint tenant dies first.
8. A judgment lien or execution against one joint tenant must be carried to completion during that tenant's life. A mere lien generally does not sever; if the debtor joint tenant dies before sale, survivorship extinguishes the interest to which the lien attached, and the creditor takes nothing.
9. Severance may be express, implied, or produced by operation of law. Conveyance, mutual agreement, a binding contract to convey, partition, and in some jurisdictions a unilateral declaration of record all sever; the effect of leases and of executory contracts remains jurisdictionally divided.
10. Simultaneous death is governed by statute, not by survivorship. Under the Uniform Simultaneous Death Act, where there is no sufficient evidence that one joint tenant survived the other by the statutory period, the property is distributed as though each had survived as to his fractional share — converting the estate, for distribution purposes, into a tenancy in common.
11. Probate avoidance explains joint tenancy's persistence, and also its dangers. It transfers title on death without administration, but it defeats the estate plan expressed in a will, exposes the property to a cotenant's creditors and divorce, may constitute a completed gift for transfer-tax purposes, and gives no protection against unilateral severance.

• Define joint tenancy and state precisely how it differs from tenancy in common, tenancy by the entirety, and community property.
• Trace the development of joint tenancy from feudal England through the equitable reaction to the modern American statutory presumption against survivorship.
• State the content of each of the four unities and explain the consequence of the absence or destruction of each.
• Apply the rules of creation to express, ambiguous, and statutory language, including direct conveyances and the modern relaxation of the unities of time and title.
• Distinguish survivorship from inheritance, devise, and descent, and explain why a will cannot dispose of a joint tenancy interest.
• Analyze severance by conveyance, agreement, contract, lease, mortgage, and partition, including partial severance among three or more joint tenants.
• Compare the title and lien theories of mortgages and predict the effect of each on a joint tenancy and on the mortgagee after the mortgagor's death.
• Evaluate the position of judgment creditors, execution purchasers, and bankruptcy trustees against a joint tenant's interest.
• Apply the Uniform Simultaneous Death Act and related survival statutes to the death of joint tenants in a common disaster.
• Identify the probate, transfer-tax, and basis consequences of joint tenancy and the recording steps that clear title after a joint tenant's death.
• Advise on when joint tenancy is and is not an appropriate instrument of estate planning, and correct the misconceptions that most often attend its use.

• Restatement (First) of Property §§ 178–194 (1936) (concurrent interests; joint tenancy and severance).
• Restatement (Third) of Property (Wills and Other Donative Transfers) §§ 6.1–6.2, 7.1 (2003) (nonprobate transfers and survivorship arrangements).
• Uniform Probate Code §§ 2-702, 2-803, 6-101, 6-201 to 6-227 (nonprobate transfers on death; multiple-party accounts).
• Uniform Simultaneous Death Act §§ 1–4 (Unif. Law Comm'n 1940, revised 1993).
• Uniform Real Property Transfer on Death Act §§ 1–19 (Unif. Law Comm'n 2009).
• 11 U.S.C. §§ 363(h), 522(b)(3)(B), 541(a) (bankruptcy treatment of co-owned interests).
• I.R.C. §§ 1014, 2040 (basis at death; inclusion of jointly held property).
• Statute of Anne, 4 & 5 Anne, c. 16, § 27 (1705); Partition Act, 31 & 32 Vict., c. 40 (1868) (Eng.).
• State joint-tenancy creation, severance, survivorship-affidavit, and recording statutes.

• 2 William Blackstone, Commentaries on the Laws of England *179–*193 (1766).
• Edward Coke, The First Part of the Institutes of the Laws of England §§ 280–299 (1628).
• 4 James Kent, Commentaries on American Law *357–*366 (1830).
• Frederick Pollock & Frederic W. Maitland, The History of English Law Before the Time of Edward I, vol. 2, at 20–23, 274–284 (2d ed. 1898).
• S. F. C. Milsom, Historical Foundations of the Common Law 168–177 (2d ed. 1981).
• A. W. B. Simpson, A History of the Land Law 55–80 (2d ed. 1986).
• John H. Baker, An Introduction to English Legal History 265–290 (5th ed. 2019).
• Roger A. Cunningham, William B. Stoebuck & Dale A. Whitman, The Law of Property §§ 5.3–5.5 (3d ed. 2000).
• 7 Richard R. Powell, Powell on Real Property §§ 51.01–51.07 (Michael Allan Wolf ed., 2023).
• 2 Herbert T. Tiffany, The Law of Real Property §§ 417–425 (3d ed. 1939 & Supp.).
• R. H. Helmholz, Realism and Formalism in the Severance of Joint Tenancies, 77 Neb. L. Rev. 1 (1998).
• N. William Hines, Real Property Joint Tenancies: Law, Fact, and Fancy, 51 Iowa L. Rev. 582 (1966).
• Samuel M. Fetters, An Invitation to Commit Fraud: Secret Destruction of Joint Tenant Survivorship Rights, 55 Fordham L. Rev. 173 (1986).

A joint tenancy is a concurrent estate held by two or more persons in equal undivided shares, created by a single instrument and vesting at a single moment, with the incident that on the death of any joint tenant the entire estate continues in the survivors free of the decedent's interest. The definition contains two ideas that must be kept separate. The first is the ordinary content of cotenancy described in Chapter 16: each joint tenant has an undivided interest and a present right to possess the whole, and the rules of accounting, contribution, waste, and ouster apply to joint tenants exactly as they apply to tenants in common. The second is the distinguishing incident: the right of survivorship, which operates on death and which no other common-law concurrent estate except tenancy by the entirety possesses.

The classical formulation held that joint tenants are seised per my et per tout — by the half and by the whole. The phrase is not merely picturesque. During life each joint tenant holds a distinct, alienable fractional interest: he may sell it, mortgage it, or have it seized by his creditors, and to that extent he holds per my. At death the fractional character disappears; the survivors are treated as having held the whole from the beginning, and to that extent the tenants held per tout. The tension between these two aspects generates most of the difficulties in the modern law. A joint tenancy is fragile precisely because the alienability of the individual share can, at any moment and without notice, destroy the survivorship that the parties bargained for.

Restatement (First) of Property §§ 178–186 states the estate in these terms and treats survivorship as an incident of the form rather than as a separate interest. That characterization matters. Because survivorship is an incident rather than a future interest, it is not subject to the Rule Against Perpetuities examined in Chapter 15; because it is not a future interest, it cannot be devised, assigned, or reserved apart from the estate to which it attaches; and because it operates by the original conveyance rather than by transfer at death, it is not a testamentary disposition subject to the Statute of Wills.

The right of survivorship, or jus accrescendi, means that the interest of a joint tenant who dies is extinguished, and that the estate remains in the survivors undiminished. Nothing is transferred. This is the analytical key to the entire subject, and nearly every practical consequence follows from it. Because nothing is transferred, the decedent's will has no operation upon the interest: a devise of “my interest in the family farm” by a joint tenant is inoperative, since at the moment the will speaks there is no interest to devise. Because nothing is transferred, the interest passes outside probate and requires no administration, though a recorded evidentiary instrument is needed to clear the record title. Because nothing is transferred, a creditor whose lien attached only to the decedent's fractional interest ordinarily loses the security when that interest is extinguished.

The right belongs to the last survivor absolutely. Where four persons hold as joint tenants and three die, the survivor holds a fee simple absolute in severalty, and the joint tenancy has spent itself. Where one of four dies, the remaining three continue as joint tenants of the whole, each now holding an undivided one-third. The surviving joint tenants do not take equal shares of the decedent's third as new acquisitions; the fractions simply enlarge, because the decedent's participation in the single estate has ceased.

American statutes presume a tenancy in common, yet joint tenancy is used constantly. The explanation is functional rather than doctrinal. Joint tenancy is the simplest and cheapest device for transferring property at death. It requires no trust instrument, no will, no administration, and no court order; it operates automatically upon the death of a cotenant; and it is available to ordinary owners without professional assistance. For married couples in common-law states that have abolished tenancy by the entirety, and for unmarried co-owners such as siblings or domestic partners, the joint tenancy provides survivorship at the cost of a single line of deed language.

Its use extends well beyond land. Joint bank accounts, brokerage accounts, and certificates of deposit are ordinarily held with survivorship rights, and the law governing them — codified in Uniform Probate Code §§ 6-201 to 6-227 — recognizes that such accounts often serve purposes other than a gift of the balance, and therefore presumes that during the parties' lifetimes the account belongs to them in proportion to their net contributions, while the survivor takes at death. Motor-vehicle registration, savings bonds, and safe-deposit arrangements exhibit similar patterns. In each case the attraction is the same: a nonprobate transfer effected by the form of ownership itself.

The costs, examined in Part XI, are frequently underestimated. Joint tenancy overrides the estate plan; it exposes the property to the other tenant's creditors, judgments, and marital dissolution; it may generate transfer-tax consequences at creation; it forfeits the full basis adjustment available to community property; and it can be destroyed unilaterally and silently by a cotenant who conveys to a straw or, in an increasing number of jurisdictions, simply to himself. A device chosen for its simplicity is thus often chosen without appreciation of what it does.

Joint tenancy is a creature of grant. Where coparcenary arose by operation of the canons of descent, and tenancy in common arose from the fragmentation of shares through separate conveyances, joint tenancy came into being when a single instrument conveyed to two or more persons who together answered to the lord as one tenant. Maitland's account emphasizes the feudal logic: the lord's interest lay in the integrity of the tenancy, and a grant creating a single undivided holding preserved the services intact. When one joint tenant died there was no descent, no wardship, no relief, and no marriage — no incident of tenure fell due at all, because the tenancy continued unbroken in the survivors.

Coke's treatment in the Institutes fixed the doctrine in its classical form, insisting on the four unities as the test of the estate and describing survivorship as the necessary consequence of the tenants holding one and the same interest. Blackstone's exposition, quoted at the opening of this chapter, restated Coke in the language of the eighteenth century and made explicit the common law's preference: a conveyance to two or more persons, without words of severance, created a joint tenancy. The preference was strong enough that words indicating separate shares — “equally,” “share and share alike,” “to be divided between them,” “respectively” — were required to rebut it, and the reported cases on such “words of severance” fill a substantial part of the older learning.

Milsom and Baker place the doctrine within the wider development of the land law, and both note that the survivorship incident served an important practical function apart from tenure. Because the common law had no general concept of a legal entity, joint tenancy furnished the mechanism by which a continuing body — feoffees to uses, trustees, churchwardens, the members of a religious house — could hold land without the disruption of a devolution at each member's death. That function survives in modern law: trustees still take as joint tenants, precisely so that the trust res is not fragmented among the personal representatives of deceased trustees, a point examined in the Society's trust treatises and previewed in Chapter 16.

Chancery never shared the common law's enthusiasm. Equity regarded survivorship as a lottery: the entire beneficial ownership was allocated according to the accident of longevity, often defeating the expectations of the parties and the claims of families. The maxim was that equity leans against joint tenancy, and it produced a set of recurring exceptions in which a conveyance formally creating a joint tenancy at law was treated in equity as a tenancy in common. Three were classical: purchase money advanced in unequal shares; mortgages taken by two or more lenders; and property acquired for partnership purposes. In each the parties' commercial intention was inconsistent with a windfall to the survivor.

The American statutory reversal generalized the equitable exceptions into a rule of construction. Beginning in the late eighteenth century, and effectively complete by the middle of the nineteenth, state legislatures provided that a grant or devise to two or more persons creates a tenancy in common unless the instrument expressly declares a joint tenancy or a right of survivorship. Kent records the change as already established in the leading jurisdictions by 1830. The reversal did not abolish joint tenancy; it reallocated the burden of expression. Survivorship is now available on demand, but only to those who ask for it in terms.

Two jurisdictions have gone further. A small number of states abolished joint tenancy in land altogether or converted it into a tenancy in common with an express survivorship remainder, and several treat a purported joint tenancy in personal property under distinct statutory regimes. The modern picture is therefore layered: a common-law estate, a general statutory presumption against it, particular statutes reinstating it for specified assets, and a substantial body of construction law mediating among them.

The four unities perform two distinct functions, and confusion between them is a common source of error. At creation, the unities are conditions: unless all four are present, no joint tenancy arises, and the grantees take as tenants in common. After creation, the unities are conditions of continuance: destruction of the unity of time, title, or interest severs the joint tenancy as to the interest affected, converting it into a tenancy in common. Unity of possession is the exception in both directions — it is essential to any concurrent estate whatever, and its destruction terminates the cotenancy entirely by partition rather than converting one form into another.

Unity of time requires that the interests of all joint tenants vest simultaneously. Unity of title requires that they derive from the same instrument or the same act of adverse possession. The two operate together and generate the same historical difficulty: an owner in severalty who wished to create a joint tenancy between himself and another could not do so directly, because his own interest had vested earlier and arisen from a different instrument. The classical solution was the straw conveyance — a transfer to a nominal third party who immediately reconveyed to both intended tenants by a single deed, thereby supplying both unities.

The formality served no purpose beyond itself, and modern statutes in the great majority of states now permit a direct conveyance from A to A and B as joint tenants, expressly dispensing with the intervening transfer. Where such a statute exists, the drafter should still recite the intended tenancy in full, because the statute cures the unities without supplying the required expression of survivorship. Where no statute exists, the straw remains necessary, and its omission produces a tenancy in common — a defect that frequently surfaces only at the death of one of the parties, when it is too late to correct.

Unity of title also explains the classical rule that joint tenancy cannot arise between an original owner and a devisee, or among persons who acquire successive shares through separate purchases, however equal their fractions. The interests of two purchasers who buy one-half each from a common seller by separate deeds on the same day are held under different titles, and no joint tenancy arises absent statutory relaxation or an express declaration that the courts will construe as intent to create survivorship.

Unity of interest requires that the joint tenants hold equal fractional shares of the same estate for the same duration. Three joint tenants hold one-third each; a purported conveyance giving one a half and the others a quarter each fails the unity and creates a tenancy in common, regardless of the survivorship language used. Nor may one tenant hold a fee simple and another a life estate: identity of quantum is as necessary as equality of fraction. Where survivorship is desired with unequal shares — a common commercial requirement — the instrument must achieve it through a tenancy in common coupled with cross-contingent remainders, or through a trust, rather than through joint tenancy.

Equality of interest does not mean equality of contribution. Two joint tenants take equal shares even though one supplied the whole purchase price, and that consequence, unless intended, is a gift. Equity's presumption of a resulting trust in favor of the contributor is displaced in most jurisdictions where the parties are spouses or where an express joint tenancy is declared, but it survives in others, and the disparity between the legal and the beneficial title is a recurring source of litigation.

Unity of possession, treated at length in Chapter 16, is the common attribute of all cotenancy and requires no separate development here. Its significance in the present context is negative: because unity of possession is shared with the tenancy in common, its presence tells nothing about which form exists, and because its destruction ends cotenancy altogether, it plays no role in the law of severance. Every severance question is therefore a question about time, title, or interest.

Because the statutory presumption favors tenancy in common, the drafter must express survivorship affirmatively. The conventional and safest formula is “to A and B, as joint tenants with right of survivorship, and not as tenants in common.” Each element does work. “As joint tenants” identifies the estate; “with right of survivorship” expresses the incident in jurisdictions whose statutes require the survivorship right rather than the label to be declared; and the negation of tenancy in common forecloses the argument that the granting language is merely descriptive. Several statutes prescribe or bless particular formulas, and where they do, the statutory words should be used verbatim.

Deficient language produces predictable litigation. “To A and B jointly” is generally held insufficient, “jointly” being read as a description of concurrent ownership rather than a declaration of survivorship. “To A and B as joint tenants” is sufficient in most states but not in those whose statutes require express mention of survivorship. “To A and B, or the survivor of them” creates survivorship, but courts divide on whether it creates a joint tenancy or a tenancy in common with cross-contingent remainders — a distinction of consequence, because the latter cannot be severed unilaterally. Words of severance such as “equally,” “in equal shares,” or “share and share alike,” when combined with survivorship language, produce a genuine ambiguity that most courts resolve in favor of tenancy in common in accordance with the statutory presumption.

The modern statutes relaxing the unities of time and title do more than eliminate the straw. They mark a shift in the theory of the estate, from a formal inquiry into whether four conditions coexist to a substantive inquiry into whether survivorship was intended and expressed. Riddle v. Harmon, examined in Part VI in the context of severance, is the clearest judicial statement of the same shift: if an owner may create a joint tenancy in himself and another by direct deed, no reason of principle requires a straw to destroy one. The two propositions stand or fall together, and jurisdictions that have accepted the first have generally accepted the second.

Statutory creation also occurs outside the deed. Multiple-party bank accounts under Uniform Probate Code §§ 6-201 to 6-227 create survivorship rights by the terms of the account contract, subject to a lifetime ownership rule keyed to net contributions rather than to equal shares. Transfer-on-death deeds under the Uniform Real Property Transfer on Death Act achieve a functionally similar nonprobate transfer without creating any present concurrent interest at all, and thus without exposing the property to the beneficiary's creditors during the owner's life. Where the client's object is probate avoidance rather than present co-ownership, the transfer-on-death deed is ordinarily the superior instrument, and the practitioner should say so.

The four systems of concurrent ownership recognized in American law differ along a small number of axes: who may hold, what unities are required, whether survivorship attaches, whether an individual interest may be transferred or reached by creditors, and whether partition is available. The following table states the distinctions that recur throughout Part VI; Chapters 18 and 19 develop the entirety and community-property columns.

The internal economy of a joint tenancy is that of any cotenancy. Each joint tenant may occupy and use the whole without liability for the value of that occupancy absent ouster, agreement, or statute; each must account for rents and profits received from third parties and for the proceeds of depletion; each may compel contribution for taxes, insurance, mortgage installments, and necessary repairs, subject to offset for occupancy value; and improvements are compensated on partition by their enhancement of value rather than by their cost. Chapter 16 develops these rules, and they are not repeated here.

One qualification is peculiar to joint tenancy. Because survivorship makes the eventual destination of the whole uncertain, expenditures by one joint tenant may confer a benefit that the expending tenant will never enjoy, or may enrich his estate at the survivor's expense. Courts have accordingly been attentive to the timing of contribution claims: a joint tenant who pays the whole of a mortgage debt and then dies has, by hypothesis, discharged an encumbrance for the survivor's exclusive benefit, and the majority rule denies his estate any claim, on the ground that the payment was made upon an interest that the payor's own death extinguished. The result is harsh, and it is a principal reason for reducing significant financial arrangements between joint tenants to writing.

A joint tenant's interest is fully alienable during life. He may sell it, give it away, mortgage it, lease it, or subject it to execution, and he requires neither the consent nor the knowledge of his cotenants. This is the per my aspect of the estate, and it stands in complete contrast to the tenancy by the entirety examined in Chapter 18, where the marital unity forbids unilateral disposition. Alienability and survivorship are, however, in tension: the exercise of the power of alienation destroys the very survivorship that distinguishes the estate.

Two consequences follow. First, no joint tenant can rely upon survivorship as a form of security; it is defeasible at the will of any cotenant, and until the moment of death it confers only an expectancy. Second, an agreement not to sever, though it cannot make the interest inalienable, is enforceable in contract and in equity between the parties, and a recorded agreement of that kind will bind those who take with notice. Where the parties genuinely intend an indestructible survivorship — as in many family arrangements — the correct instruments are a tenancy in common with cross-contingent remainders, a trust, or a transfer-on-death deed, not a joint tenancy.

Severance is the destruction of one or more of the unities of time, title, or interest with respect to a joint tenant's share, converting that share into a tenancy in common. Severance does not divide the land, does not end the cotenancy, and does not disturb the other tenants' possession; it removes survivorship as between the severed interest and the rest. Its consequences are entirely prospective, and its effect is measured at the moment it occurs, not at death.

Because severance operates on the share rather than on the estate as a whole, the arithmetic must be handled with care where three or more joint tenants exist. If A, B, and C hold as joint tenants and A conveys to X, X takes an undivided one-third as tenant in common; B and C continue to hold their combined two-thirds as joint tenants between themselves. If B then dies, C holds two-thirds as tenant in common with X. If instead X died first, X's third would pass by his will or by descent, since X has no survivorship rights at all. Jackson v. O'Connell states the rule and works the fractions.

The paradigm severance is a conveyance of the joint tenant's interest to a third person. The grantee takes under a different instrument and at a different time, so the unities of title and time are destroyed as to that share, and the grantee holds as a tenant in common. The conveyance need not be for value, need not be recorded to be effective between the parties, and need not be communicated to the other joint tenants. A conveyance in trust severs; a conveyance of a life estate carved out of the joint tenant's share severs as to the duration of the life estate under the prevailing view; and a conveyance of a contingent or executory interest generally does not sever, because the unities are unaffected until the interest becomes possessory.

The historical requirement of a straw for self-conveyance was discarded in Riddle v. Harmon, where a joint tenant conveyed her interest to herself as tenant in common shortly before her death, without notifying her husband. The court held the severance effective, reasoning that the modern statutes permitting direct creation of a joint tenancy had removed the formal basis for requiring an intermediary to destroy one, and that the law should not compel a useless ceremony. The decision is now widely followed, and several states have codified unilateral severance by recorded declaration.

The rule of Riddle has been criticized because it permits secret severance: a joint tenant may execute and hold an unrecorded severance deed, producing it if he survives his cotenant, and destroying it if he does not, thereby securing the benefit of survivorship without its risk. Fetters's well-known critique describes the maneuver as an invitation to fraud. Legislatures have responded not by restoring the straw but by conditioning unilateral severance on recording before the severing tenant's death, which converts a secret option into a public act. That is the sounder solution, and jurisdictions that have not adopted it should be understood to leave the risk on the surviving joint tenant.

Joint tenants may sever by mutual agreement, and the agreement need not take the form of a conveyance. An express contract to hold in common severs; so does a written settlement or property agreement in a marital dissolution that treats the interests as separate. Courts also find severance by a course of conduct evidencing an intention to treat the estate as held in common — division of rents by fixed shares, separate mortgaging with mutual acquiescence, or an executed agreement to sell and divide the proceeds. Downing v. Downing and the cases collected with it illustrate the inquiry, which is one of intention manifested by conduct rather than of formal conveyancing.

A binding contract by one joint tenant to convey his interest severs in equity from the moment the contract becomes specifically enforceable, on the doctrine of equitable conversion: the vendor holds the legal title as trustee for the purchaser, and the beneficial interest, being held under a different title, is no longer jointly held. Where all joint tenants contract to sell to a single purchaser, the authorities divide. The better view is that a joint contract of sale does not sever, because the vendors' interests in the proceeds remain undivided and held under the same instrument, unless the contract allocates the proceeds in separate shares. Where the contract is silent, courts increasingly ask what the parties intended as to the proceeds rather than applying a mechanical rule.

Partition severs necessarily, because it destroys the unity of possession and ends the cotenancy altogether. A judgment of partition in kind converts undivided shares into separate parcels held in severalty; a partition sale converts them into separate shares of a fund. An action for partition commenced but not concluded before a joint tenant's death does not itself sever in most jurisdictions, and survivorship operates, abating the action — a trap that counsel avoids by taking a severance deed or recorded declaration at the outset of the litigation. Chapter 20 develops the remedy of partition in full.

Whether a lease by one joint tenant severs is among the most contested questions in the subject, and the disagreement is genuinely doctrinal. On one view, a lease conveys a possessory estate out of the lessor's interest, temporarily destroying the unities of interest and possession, and therefore severs — permanently on the strongest form of the view, or for the duration of the term on a weaker form. On the competing view, the lease is merely an encumbrance upon the lessor's share, leaving the joint tenancy intact and expiring with the lessor's interest if he predeceases his cotenant.

Tenhet v. Boswell adopted the second view in its clearest form: a lease by one joint tenant does not sever, and the lease terminates upon the lessor's death, because the estate out of which it was carved has itself been extinguished by survivorship. The result is coherent — a lessee can take no more than his lessor had, and the lessor had an interest defeasible by his own death — but it is commercially awkward, since a lessee dealing with a joint tenant obtains a term of uncertain duration and must protect himself by requiring all joint tenants to join. Other jurisdictions treat the lease as a temporary severance, reviving the joint tenancy at the end of the term, and a minority hold it a complete severance. Counsel should treat the question as jurisdiction-specific and draft to avoid it.

At common law a mortgage was a conveyance of the fee to the mortgagee, defeasible upon payment. In a jurisdiction adhering to that title theory, a mortgage executed by one joint tenant transfers his legal title and destroys the unity of title, severing the joint tenancy as to his share. In a lien-theory jurisdiction — the position of the large majority of American states — a mortgage creates only a security interest; the mortgagor retains title, no unity is destroyed, and no severance occurs. A small number of intermediate-theory states treat the mortgage as a lien until default and as a transfer of title thereafter, producing a severance only upon default or upon entry.

Harms v. Sprague states the lien-theory consequence in its full rigor. One of two joint tenants mortgaged his interest to secure a third party's note and then died. The court held that the mortgage had not severed the joint tenancy, that the surviving joint tenant therefore took the entire estate by survivorship, and — critically — that the mortgage lien did not survive the mortgagor's death, because the interest to which it had attached was extinguished rather than transmitted. The mortgagee, who had taken security from a joint tenant without requiring joinder, was left with an unsecured claim against the mortgagor's estate.

The doctrinal point generalizes: an encumbrance upon a joint tenant's interest lives only as long as that interest does. This is the counterpart of the rule that survivorship is not a transfer. It follows that a mortgagee, judgment creditor, or lienholder dealing with one joint tenant holds security that will evaporate if the debtor dies first, and that the only reliable protections are joinder by all joint tenants, an agreed severance recorded contemporaneously with the loan, or a title policy insuring the risk. Chapter 32 of this volume develops the mortgage relationship itself; the present concern is only its effect upon the concurrent estate.

A judgment creditor of one joint tenant may reach that tenant's undivided interest, but must complete the process during the debtor's lifetime. The docketing of a judgment creates a lien upon the debtor's interest; in most jurisdictions the lien alone does not sever, on the same reasoning that governs lien-theory mortgages. If the debtor joint tenant dies before execution sale, the interest is extinguished, the lien falls with it, and the surviving joint tenant takes free of the claim. If the sale is completed first, the purchaser takes the debtor's undivided share as a tenant in common, and the severance is accomplished by the conveyance rather than by the lien.

A minority of jurisdictions hold that levy, or the delivery of a writ of execution, severs, on the ground that the process operates as a compulsory transfer of the debtor's interest. The practical advice is the same in either camp: a creditor who wishes to preserve its position against a joint tenant debtor must either complete the sale promptly or obtain a severance of record. Chapter 20 examines the creditor's alternative of compelling partition, which is available to the purchaser at execution sale as successor to the debtor's undivided share.

The commencement of a bankruptcy case brings the debtor joint tenant's undivided interest into the estate under 11 U.S.C. § 541(a). Whether the filing itself severs is a question of state property law, and the prevailing view is that it does not: the trustee succeeds to the interest the debtor held, including its vulnerability to extinguishment by survivorship, and no unity is destroyed by the mere vesting. A sale by the trustee severs, as any conveyance does, and 11 U.S.C. § 363(h) permits the trustee to sell both the estate's interest and the interest of the co-owner in specified circumstances, with the co-owner's share of the proceeds preserved and a right of first refusal under § 363(i).

The contrast with tenancy by the entirety is instructive and anticipates Chapter 18. Section 522(b)(3)(B) permits a debtor to exempt entirety property from the estate to the extent it is immune from process under applicable non-bankruptcy law, an exemption that has no analogue for joint tenancy, whose individual shares are freely reachable. A married debtor in an entirety jurisdiction may therefore protect property held with a non-debtor spouse that would be fully available to creditors if held in joint tenancy — a difference that makes the choice between the two forms consequential for solvency planning, and that explains the persistence of the entirety estate where it remains available.

On the death of a joint tenant the survivors' title requires no conveyance, no order of court, and no act by the personal representative. The interest simply ceases. Record title, however, does not clear itself: the chain still shows a conveyance to two or more persons, and a purchaser or lender will require proof that one of them has died and that the joint tenancy was unsevered at the moment of death. The customary practice is the recording of a certified death certificate together with an affidavit of survivorship identifying the decedent, the instrument creating the tenancy, and the absence of severance; many states prescribe the form by statute, and several require an accompanying tax clearance.

Two questions of substantive law arise with regularity. The first is whether a severance occurred before death, which is the reason unrecorded severance deeds are so troublesome; the affidavit is only as reliable as the affiant's knowledge. The second is whether the survivor is disqualified. Under Uniform Probate Code § 2-803 and the equivalent state slayer statutes, a joint tenant who feloniously and intentionally kills a cotenant effects a severance of the interest as of the moment of the killing, so that the killer retains his own fractional share but takes nothing by survivorship. Duncan v. Vassaur applies the principle, which rests on the maxim that no person may profit by his own wrong rather than on any destruction of the unities.

Survivorship presupposes a survivor. Where joint tenants die in circumstances that make the order of death unascertainable, the common law reached an impasse, since each estate would have to prove survival to claim the whole. The Uniform Simultaneous Death Act supplies the rule: where there is no sufficient evidence that one joint tenant survived the other, the property is distributed as though each had survived as to a proportionate fractional share, so that a two-person joint tenancy is administered as a tenancy in common of one-half in each estate. The 1993 revision, tracking Uniform Probate Code § 2-702, replaced the evidentiary standard with a 120-hour survival requirement, so that a joint tenant who fails to survive by five days is deemed to have predeceased.

The statutes are default rules and yield to a contrary provision in the governing instrument. Careful drafting for spouses and business co-owners routinely displaces them, either by a longer survival period or by a presumption designating one party as the survivor for distribution purposes, so that administration proceeds through a single estate. Where no instrument governs — as with most residential deeds — the statutory rule applies, and the practitioner should be prepared to explain that joint tenancy provides no protection against the common disaster it is often assumed to address.

Probate. The joint tenancy interest is a nonprobate asset. It does not pass under the will, is not administered by the personal representative, and is generally unavailable to the decedent's general creditors, though several states permit recovery against nonprobate transfers where the probate estate is insufficient, and the interest may be counted in computing a surviving spouse's elective share under Uniform Probate Code Article II. Restatement (Third) of Property (Wills and Other Donative Transfers) §§ 6.1–6.2 treat survivorship arrangements as will substitutes and subject them, so far as consistent with their nonprobate character, to the substantive rules governing donative transfers.

Transfer tax. The creation of a joint tenancy with a person other than a spouse may be a completed gift of the disproportionate share, and I.R.C. § 2040 governs inclusion in the gross estate: the whole of the property is included in the estate of the first joint tenant to die, except to the extent the survivor can prove contribution, with a special rule for qualified joint interests between spouses limiting inclusion to one-half. The consideration-furnished rule is a frequent surprise where a parent adds a child as a joint tenant for convenience.

Basis. Only the included portion receives a basis adjustment under I.R.C. § 1014. In a joint tenancy between spouses in a common-law state, one-half is adjusted; the other half retains its original basis. Community property, by contrast, receives a full adjustment on both halves at the first spouse's death — the principal tax advantage of community-property ownership, developed in Chapter 19, and a reason that spouses in community states should rarely convert community assets into joint tenancy without advice.

Recording. Because survivorship depends on the state of title at the moment of death, the recording system is central to its administration. Recorded severance declarations, recorded agreements not to sever, and recorded survivorship affidavits together supply the record evidence on which examiners rely. Chapters 28 and 29 develop the recording acts and the chain of title; the point here is that the reliability of a joint tenancy as a title device is a function of the diligence with which the parties use the record.

Legislative attention to joint tenancy has moved along four lines. The first is the relaxation of the unities of time and title, permitting direct creation and, in several states, direct unilateral severance by recorded declaration. The second is the imposition of recording requirements upon severance, addressing the secret-severance problem left open by Riddle v. Harmon. The third is the development of substitutes: the multiple-party account provisions of Uniform Probate Code Article VI, which supply survivorship for financial assets on a net-contribution theory, and the Uniform Real Property Transfer on Death Act, which supplies survivorship-like transfer of land without present co-ownership. The fourth is the subordination of survivorship to competing family and creditor claims — elective-share statutes that count nonprobate transfers, slayer statutes, and provisions permitting recovery from nonprobate recipients where the probate estate cannot pay the decedent's debts.

Taken together these developments describe a doctrine that has been simplified in its formal requirements and complicated in its consequences. The four unities matter less than they did; the state of the record, the statutory classification of the asset, and the interaction with the transfer-tax and elective-share regimes matter more. A practitioner who reasons only from Blackstone will draft a valid joint tenancy and misadvise the client about everything that follows.

Drafting. State the estate and the incident in full, negate the alternative, and use any statutory formula verbatim. Avoid words of severance in the same clause as survivorship language. Where the parties contribute unequally, do not use joint tenancy: equality of interest is a condition of the estate, and unequal contribution with equal title is a gift. Where the parties want survivorship that cannot be defeated unilaterally, use a tenancy in common with cross-contingent remainders, a trust, or a recorded agreement not to sever.

Advising. Establish the client's actual objective. If it is probate avoidance alone, a transfer-on-death deed or a revocable trust achieves it without conferring a present interest on the beneficiary, without exposing the property to the beneficiary's creditors or divorce, and without the transfer-tax consequences of a present gift. If the objective is genuine present co-ownership with survivorship, joint tenancy is appropriate, and the client should be told plainly that any cotenant may destroy the survivorship at any time and that a will cannot control the property.

Title examination. Verify the creating instrument's language against the statute in force at its date. Search for severance deeds, recorded declarations, marital settlement agreements, executed contracts of sale, mortgages in title-theory jurisdictions, judgment liens followed by execution, and bankruptcy filings, each of which may have severed. On the death of a joint tenant, confirm the recording of the death certificate and survivorship affidavit, and consider whether a slayer statute, a simultaneous-death statute, or an elective-share claim is in issue before certifying title in the survivor.

Joint tenancy is a concurrent estate whose distinguishing incident is the right of survivorship. Its classical requirements are the four unities of time, title, interest, and possession, and its classical explanation is that joint tenants hold per my et per tout — separately for purposes of alienation, together for purposes of survivorship. The common law preferred the estate because it preserved feudal services and permitted continuing bodies to hold land; equity distrusted it as a lottery; and American legislatures adopted equity's view, reversing the presumption so that a conveyance to two or more persons creates a tenancy in common unless survivorship is expressly declared.

The modern law is dominated by severance. A joint tenant may convey, mortgage, lease, contract, or be executed against, and each of these acts may or may not destroy the survivorship depending on the unity affected and on the jurisdiction's doctrinal commitments. Conveyance severs; agreement and specifically enforceable contract sever; partition severs necessarily; the effect of a lease and of a mortgage depends respectively on the local rule and on the mortgage theory in force; and a lien unexecuted at the debtor's death dies with the interest it encumbered. Because survivorship extinguishes rather than transfers, encumbrances upon a deceased joint tenant's share disappear with it, as Harms v. Sprague holds, and the decedent's will and general creditors reach nothing.

At death the estate operates automatically but the record does not, and survivorship affidavits, slayer statutes, simultaneous-death and 120-hour survival rules, elective-share claims, and the transfer-tax and basis consequences of I.R.C. §§ 1014 and 2040 all bear on the result. Joint tenancy persists because it is a cheap and immediate nonprobate transfer; it is dangerous because it overrides the estate plan, exposes the property to a cotenant's creditors, and may be destroyed unilaterally and in silence. The competent adviser reaches for it only after considering the transfer-on-death deed, the revocable trust, and the tenancy in common with cross-contingent remainders.

Chapter 18 turns to tenancy by the entirety. That estate is joint tenancy's marital analogue: it requires the same four unities and adds a fifth, the unity of marriage, and it carries the same right of survivorship. But the resemblance ends at the point that matters most in practice. Because the spouses are regarded as holding a single undivided ownership rather than two alienable shares, neither may convey, encumber, or sever unilaterally, partition is unavailable during the marriage, and in most entirety jurisdictions the property is beyond the reach of the separate creditors of one spouse. Where joint tenancy offers survivorship that any cotenant may destroy, tenancy by the entirety offers survivorship that neither spouse may destroy alone — and it is that indestructibility, together with the creditor immunity that follows from it, that Chapter 18 examines.

• Restatement (First) of Property §§ 178–194 (1936).
• Restatement (Third) of Property (Wills and Other Donative Transfers) §§ 6.1–6.2 (2003).
• Uniform Probate Code §§ 2-702, 2-803, 6-201 to 6-227.
• Uniform Simultaneous Death Act (Unif. Law Comm'n 1940, revised 1993).
• 2 William Blackstone, Commentaries on the Laws of England *179–*193 (1766).
• John H. Baker, An Introduction to English Legal History 265–290 (5th ed. 2019).
• Roger A. Cunningham, William B. Stoebuck & Dale A. Whitman, The Law of Property §§ 5.3–5.5 (3d ed. 2000).
• 7 Richard R. Powell, Powell on Real Property §§ 51.01–51.07 (Michael Allan Wolf ed., 2023).
• R. H. Helmholz, Realism and Formalism in the Severance of Joint Tenancies, 77 Neb. L. Rev. 1 (1998).
• Samuel M. Fetters, An Invitation to Commit Fraud: Secret Destruction of Joint Tenant Survivorship Rights, 55 Fordham L. Rev. 173 (1986).