Mortmain is a legal doctrine, rooted in medieval English law, that restricted the ability of institutions which never die, such as churches, charities, and corporations, to hold land in perpetuity. The name comes from the Latin for “dead hand,” and the idea behind it is still with us: when property passes to an entity that never dies, inherits, or sells, it stops cycling through the normal market and tax system. Direct mortmain laws have mostly been repealed or struck down, but their logic lives on in trust duration rules, charitable giving law, and the federal payout rules for private foundations.
The Problem Mortmain Was Invented to Solve
Under the feudal system, land did more than house people. It generated revenue and military service for the lord and the crown. When a tenant died, the lord collected fees before the heir could take possession. If the tenant left no heir, the land reverted. If the heir was a minor, the lord controlled the land until the child came of age.
A monastery or cathedral chapter never died, never left a minor heir, and never forfeited for a felony. Once land passed to a religious house, every one of those revenue events vanished permanently. The church also owed no military service, so land that once supplied knights to the king stopped contributing to defense. As more donors conveyed property to religious institutions, often for the perceived benefit of their souls, the crown and nobility watched their tax base and manpower erode.
The Statute of Mortmain of 1279
King Edward I responded with the Statute of Mortmain, formally Statutum de Viris Religiosis. It declared that no person, religious or otherwise, could buy, sell, or receive land through any device if the result would be that the property passed into mortmain. Violators faced forfeiture, and the lord could reclaim the land. The statute closed loopholes in an earlier rule that had required religious bodies to get a lord’s consent before acquiring land in his fee.1The Avalon Project. Statute of Mortmain; November 15, 1279
The practical compromise was a licensing system. A grant into mortmain was not absolutely barred; it required royal permission. The crown could approve transfers that served its interests, block those that did not, and sell licenses as a revenue tool. The framework survived in English law until Parliament repealed the last vestiges in 1960.
How American States Borrowed the Idea
The United States never had a feudal system, so the original rationale did not transfer. But nineteenth-century American lawmakers adapted the doctrine’s suspicion of deathbed generosity to religious institutions. A number of states enacted statutes, sometimes called “deathbed statutes,” that restricted charitable giving through wills. The concern was that clergy or religious organizations might pressure a dying person into disinheriting their family in exchange for spiritual comfort.
Florida’s version, Section 732.803, is a clean illustration. If a person died leaving a spouse or children, and the will included a gift to a charitable, religious, or educational institution, any of those family members could void the gift, but only if the will had been signed less than six months before death. A will executed more than six months before the testator died was left alone, on the theory that a healthy person making long-range plans was less vulnerable to coercion than someone facing imminent death.2Justia. Shriners Hospitals for Crippled Children v Zrillic
Mississippi went further. Former Section 269 of its state constitution declared that any bequest of land or money to a religious corporation, denomination, or person in trust for religious purposes was automatically void, and the property passed to the legal heirs as though no will had been written. The rule applied regardless of when the will was signed.3Mississippi Secretary of State. Mississippi Constitution
Pennsylvania’s Wills Act of 1947 invalidated any charitable or religious bequest in a will signed within thirty days of death, unless every person who would benefit from the invalidation agreed to let the gift stand. Shorter window, similar logic: last-minute charitable gifts were presumed suspect.
Why Those Laws No Longer Apply
Courts began dismantling these statutes in the second half of the twentieth century. The central problem was that they singled out charitable and religious recipients. A dying person could leave everything to a neighbor, a business partner, or a stranger, and no statute intervened. A gift to a hospital or university triggered automatic suspicion. That distinction increasingly looked irrational under the Equal Protection Clause of the Fourteenth Amendment.
The Pennsylvania Supreme Court struck first. In In re Estate of Cavill, decided in December 1974, it examined Section 7(1) of the Wills Act and found the classification arbitrary: the statute voided a healthy person’s charitable gift if an accident killed them twenty-nine days after signing, while protecting a terminally ill person’s charitable gift if they survived thirty-one days. The court struck the statute down on equal protection grounds.4Justia. Matter of Estate of Cavill
Florida’s statute fell sixteen years later. In Shriners Hospitals for Crippled Children v. Zrillic (1990), the Florida Supreme Court held that Section 732.803 violated equal protection under both the Fourteenth Amendment and the Florida Constitution, finding no rational connection between the classification and any legitimate government purpose.2Justia. Shriners Hospitals for Crippled Children v Zrillic
Most remaining states repealed their mortmain-style restrictions by legislation rather than waiting for court challenges. Existing protections against fraud, undue influence, and lack of capacity give families adequate tools to contest suspicious wills. Today these statutes are essentially extinct, and donors face no special restrictions when including charitable bequests in their estate plans.
What Still Limits Dead-Hand Control Today
Formal mortmain is gone, but several modern rules address the same underlying concern: property that gets locked up indefinitely under instructions from someone who is no longer alive.
The Rule Against Perpetuities
Under the traditional common law rule, any future interest in property had to vest, meaning someone had to actually acquire full ownership, within twenty-one years after the death of a person alive when the interest was created. If the interest could possibly remain contingent beyond that window, it was void from the start. The rule prevented donors and testators from writing conditions into deeds and trusts that would control ownership for generations.
The rule proved famously hard to apply. Roughly half of the states adopted the Uniform Statutory Rule Against Perpetuities, which lets a court reform an arrangement that has not vested or failed within ninety years rather than voiding it outright.5California Law Revision Commission. Uniform Statutory Rule Against Perpetuities
Dynasty Trusts
More than twenty states have now abolished the Rule Against Perpetuities entirely or extended trust durations to periods as long as a thousand years. These jurisdictions allow “dynasty trusts” that can hold wealth across unlimited generations, shielding assets from estate taxes at each generational transfer. A family in a state with a traditional rule can establish a trust in a state without one. Critics argue this concentrates wealth and removes property from the normal market cycle in exactly the way feudal-era legislators feared. Defenders counter that trustee powers, judicial modification, and tax obligations provide enough flexibility to prevent true stagnation.
The Cy Pres Doctrine
When a charitable trust outlives its original purpose, the cy pres doctrine (from the French for “as near as possible”) allows a court to redirect the trust’s assets to a closely related charitable goal rather than letting them sit idle or revert to the donor’s heirs. If a donor created a trust to fund a specific hospital that later closed, a court could redirect the funds to a similar medical institution.6Internal Revenue Service. The Cy Pres Doctrine: State Law and Dissolution of Charities
Cy pres only applies when the donor had a broad charitable intent rather than an intent tied to one specific recipient. If a court decides the donor would have preferred the trust to fail rather than serve a different institution, the doctrine does not apply and the assets pass back to the donor’s estate or successors. Donors who want flexibility should express a general charitable purpose in the trust document rather than tying funds rigidly to a single organization.
Private Foundation Payout Requirements
Federal tax law requires private foundations to distribute an amount equal to at least five percent of their net investment assets each year for charitable purposes. A foundation that falls short faces an excise tax on the shortfall.7Office of the Law Revision Counsel. 26 USC 4942 – Taxes on Failure to Distribute Income Without this floor, a foundation could accept tax-deductible donations, invest the money, and never spend a dollar on its stated mission. Combined with fiduciary duties on officers and directors, the rule keeps charitable assets circulating rather than accumulating indefinitely.
What This Means for Estate Planning Now
You will not run into a mortmain statute when drafting a will or planning a charitable gift. Those laws are either repealed or unenforceable. But the underlying tension, between an individual’s desire to control property beyond death and the legal system’s interest in keeping wealth in motion, still shapes several rules that matter in practice.
Trust duration limits vary dramatically by state, which is why dynasty-trust planning so often turns on choice of jurisdiction. Charitable gifts face ongoing payout and fiduciary obligations once they reach a foundation. Courts retain the power to modify charitable arrangements that no longer serve their original purpose, so narrow instructions tied to a single beneficiary carry real risk if that beneficiary disappears. The dead hand has been loosened, not freed, and the modern rules that replaced mortmain are the ones worth knowing.