The history of trusts in America runs from a medieval English workaround for crusading knights to a sprawling body of modern law that touches taxation, investments, creditor protection, and wealth transfer across generations. English colonists carried trust law across the Atlantic as part of the common law, and over roughly four centuries American courts and legislatures reshaped it into something the original creators would not recognize.
The Medieval Roots Colonists Inherited
The trust began in 12th- and 13th-century England as the “use.” A landowner leaving on a Crusade would transfer legal title to a trusted friend, with the understanding that the friend would manage the property and return it later, or pass it to the owner’s heirs. The arrangement also helped landowners avoid feudal duties owed to the king, since those duties followed legal title.
Common law courts refused to enforce these arrangements and looked only at who held title on paper. The King’s Lord Chancellor filled the gap. By the mid-1400s, the Court of Chancery was ordering legal titleholders to manage property for the benefit of the person the arrangement was meant to serve. The split between legal ownership and equitable ownership that came out of these cases is still the defining feature of trust law today.
Henry VIII tried to kill uses with the Statute of Uses in 1536, because they drained Crown revenue. English lawyers found a workaround almost immediately: when the titleholder had active management duties to perform, the statute could not collapse the arrangement. Those active uses survived, the titleholder became the “trustee,” and the modern trust was born out of the law meant to destroy it.
Trusts in Colonial America
English settlers brought trust law to North America along with the rest of the common law. Colonial courts recognized and enforced trusts for the same practical reasons they had been used in England: managing land, protecting family wealth, and providing for dependents who could not hold or manage property themselves, including women and minor children. In an agrarian economy where land was the main form of wealth, trusts were one of the few reliable tools for controlling how property passed between generations.
Colonial practice was not a copy of English practice. The colonies had no formal Chancery court system, so ordinary colonial courts handled trust disputes using equitable principles. Trusts stayed relatively simple through this period, focused on land and family provision rather than the sophisticated financial planning they would later become known for.
How American Law Began to Diverge
After independence, the new states inherited English common law but were free to modify it, and they did. Two early developments defined American trust law for the next two centuries.
The Rule Against Perpetuities
American courts adopted the English Rule Against Perpetuities, which prevented property owners from tying up assets in trusts indefinitely. Under the common law version, any interest in property had to vest in an identifiable person within 21 years after the death of someone alive when the trust was created. The rule reflected a long-standing discomfort with dead people controlling wealth forever and locking property away from productive use. It stayed nearly universal in American law for over a century.
The Prudent Man Rule
In 1830, a Massachusetts decision changed how trustees were expected to invest. In Harvard College v. Amory, Justice Samuel Putnam rejected the idea that trustees were limited to only the safest possible investments. He wrote that a trustee should behave the way a careful, intelligent person would when managing their own money, weighing both the safety of the investment and the income it could produce. The “prudent man rule” that came out of that opinion gave trustees a workable standard and governed trust investing across most of the country for over 160 years.
Spendthrift Trusts: The First Major American Invention
In 1875, the U.S. Supreme Court decided Nichols v. Eaton, which involved a bankrupt trust beneficiary and the question of whether his creditors could reach his trust income. English courts had long said they could. The Supreme Court disagreed, holding that a person creating a trust has every right to give property income to a beneficiary “free from all liability for the debts of the latter.”1Justia. Nichols v. Eaton, 91 U.S. 716 (1875) The Court’s reasoning was practical. Wills are public records; a creditor who lends to a beneficiary with restricted trust income “knows that he has no right to look to that estate” for repayment and so is not defrauded.
This created the spendthrift trust, where the trust document itself shields assets from the beneficiary’s creditors. It had no real English counterpart, and it became enormously popular. Spendthrift provisions now appear in the vast majority of trusts drafted in the United States. About 17 states have gone further, allowing “domestic asset protection trusts” in which the person creating the trust can also be the beneficiary protected from creditors. Alaska pioneered this approach in 1997, with Delaware, Nevada, and South Dakota among the states that followed.
Federal Taxation Reshapes Trust Planning
Trusts in America were primarily about property management and family provision until the federal government started taxing wealth. The federal estate tax, introduced in 1916, turned trusts into a centerpiece of tax planning almost overnight. Wealthy families discovered that properly structured trusts could reduce or defer estate taxes, and demand for trust planning grew quickly.
By the mid-20th century, some taxpayers were creating multiple trusts for family members and keeping substantial control while shifting income tax to lower-bracket relatives. Congress responded in the Internal Revenue Code of 1954 with the grantor trust rules, now found in Sections 671 through 678. The principle is blunt: if you create a trust but keep too much control over it, the IRS treats you as still owning the assets for income tax purposes.2Office of the Law Revision Counsel. 26 USC 671 – Trust Income, Deductions, and Credits Attributable to Grantors and Others as Substantial Owners The rules force a real choice: give up meaningful control and shift the tax burden, or keep control and pay the taxes yourself. That framework still governs trust income taxation today.
Twentieth-Century Modernization
Revocable Living Trusts Go Mainstream
For most of American history, trusts were tools for the wealthy. That changed in the second half of the 20th century as middle-class families discovered revocable living trusts. These let you transfer assets into a trust during your lifetime, keep full control while you are alive, and pass the assets to your beneficiaries without probate when you die. The probate-avoidance movement of the 1960s and 1970s made them mainstream, and they are now one of the most common estate planning tools in the country.
From the Prudent Man to the Prudent Investor
The prudent man rule served well for over a century, but courts had interpreted it to require trustees to evaluate each investment individually. That made volatile holdings like stocks risky for a trustee even inside a well-diversified portfolio. A trustee whose overall portfolio performed beautifully could still face liability for a single losing holding.
The Uniform Prudent Investor Act, drafted in 1994, overhauled the standard. It judges trustee performance based on the portfolio as a whole, drawing on modern portfolio theory’s emphasis on diversification and total return. Trustees must consider the trust’s specific objectives, the beneficiaries’ needs, inflation, tax consequences, and liquidity requirements. Nearly every state has adopted some version of this standard.
The Uniform Trust Code
Trust law in America developed state by state for centuries, which meant the rules could vary dramatically depending on where a trust was created or administered. The Uniform Law Commission addressed this in 2000 with the Uniform Trust Code, the first comprehensive model trust statute in the country’s history. It covered trust creation, modification, trustee duties, and beneficiary rights, giving states a template for modernizing their trust laws. More than 35 states have adopted it in whole or in part, making it the closest thing America has to a national trust law.
Dynasty Trusts and the Modern Landscape
The most striking recent development is the erosion of the Rule Against Perpetuities. Starting in the 1990s, states began competing for trust business by relaxing or abolishing the centuries-old limit on how long a trust could last. Alaska, South Dakota, Delaware, Nevada, and others now allow trusts to last indefinitely. These “dynasty trusts” can hold and grow wealth across unlimited generations.
The appeal is practical. A properly structured dynasty trust can shield assets from estate taxes at each generational transfer, protect wealth from beneficiaries’ creditors, and keep family assets consolidated rather than fragmented through successive rounds of inheritance. The tradeoff is that these trusts give extraordinary power to the original creator, who sets terms that may govern family wealth for generations. Critics argue this concentrates wealth in ways the original Rule Against Perpetuities was designed to prevent. Proponents counter that families should be free to plan across generations without arbitrary time limits.
Combined with domestic asset protection trusts and increasingly sophisticated tax planning, these developments have made trust law one of the most active areas of American legal practice. The medieval use for returning Crusaders has become something far larger, with American innovation driving most of the evolution.