What Is a Testamentary Trust and How Does It Differ From a Living Trust?

What Is a Testamentary Trust?

A testamentary trust is a trust that is created by the terms of a person's last will and testament. It does not exist during the person's lifetime. It has no assets, no trustee, and no legal effect until the person who created the will dies and the will is admitted to probate.

When the will is probated — validated by the court and accepted as the legal expression of the deceased person's wishes — the testamentary trust is established according to the will's instructions. The court appoints the trustee named in the will (or an alternative if that person is unavailable), and the assets designated for the trust are transferred into it as part of the probate process.

From that point forward, the testamentary trust operates like any other trust: the trustee manages the assets according to the trust's terms, makes distributions to the beneficiaries as specified, and eventually distributes the remaining assets when the trust terminates (typically when the beneficiary reaches a certain age, graduates, or meets another condition specified in the will).

What Is a Living Trust?

A revocable living trust — often called simply a "living trust" — is created during the person's lifetime. The person who creates it (the grantor) typically serves as both the trustee and the primary beneficiary during their lifetime, maintaining full control over the trust's assets.

The living trust is funded during the grantor's lifetime — assets are re-titled in the name of the trust (the house, bank accounts, investment accounts). Because the assets are already in the trust when the grantor dies, they do not go through probate. The successor trustee — named in the trust document — steps in immediately and manages or distributes the assets according to the trust's terms.

A living trust also provides incapacity protection. If the grantor becomes unable to manage their own affairs, the successor trustee takes over management of the trust's assets — without court involvement, without guardianship, and without delay.

Side-by-Side Comparison

When a Testamentary Trust Makes Sense

Testamentary trusts are most useful when the primary concern is controlling distributions to specific beneficiaries after death — and when probate avoidance and incapacity protection are less important. Common situations include:

Minor children. A testamentary trust can hold assets for a minor child until they reach a specified age — 25 or 30, for example — rather than giving them full control at 18. The trustee manages the assets and makes distributions for the child's health, education, and support.

Spendthrift beneficiaries. A testamentary trust can include spendthrift provisions that prevent a beneficiary from squandering their inheritance or losing it to creditors. The trustee controls the timing and amount of distributions.

Blended families. A testamentary trust can provide income to a surviving spouse for life while preserving the principal for children from a prior marriage — similar to a QTIP trust established through a will rather than as a standalone trust.

Smaller estates. For estates that are small enough to qualify for simplified probate procedures — or for families in states where probate is relatively quick and inexpensive — the cost savings of a testamentary trust (which is part of the will, not a separate document) may outweigh the benefits of a living trust.

When a Living Trust Is the Better Choice

For most families — particularly those with real estate, retirement accounts, or assets in multiple states — a living trust is the stronger tool. It avoids probate, provides incapacity protection, operates privately, and takes effect immediately. The cost of creating and funding a living trust is higher upfront, but the savings in probate costs, time, and family stress almost always exceed the initial investment.

A living trust is particularly important for families who own property in more than one state (avoiding ancillary probate in each state), families with members who may become incapacitated (avoiding guardianship), and families who value privacy (probate is a public record; trust administration is not).

Can a Testamentary Trust Protect Assets From Medicaid?

No. A testamentary trust does not exist until after the person dies. It provides no protection during the person's lifetime — including no protection from Medicaid spend-down or estate recovery. For Medicaid asset protection, an irrevocable Medicaid Asset Protection Trust (MAPT) — created during the person's lifetime, at least five years before Medicaid benefits are needed — is the appropriate tool.

For a comprehensive guide to MAPTs and Medicaid planning, see A Consumer's Guide to Medicaid Asset Protection Trusts: Protect What You Built.

The Bottom Line

Both testamentary trusts and living trusts allow a person to control how assets are managed and distributed after death. The critical differences are timing, probate, and incapacity protection. A testamentary trust is simpler and less expensive to create but requires probate and provides no protection during the grantor's lifetime. A living trust costs more upfront but avoids probate, provides incapacity protection, and operates privately.

For most families, the living trust is the more complete solution. But for families with specific distribution needs and smaller estates, a testamentary trust — properly drafted as part of a comprehensive will — can be an effective and affordable option.

The right choice depends on the family's assets, goals, and state laws. A qualified estate planning attorney can evaluate both options and recommend the structure that best fits the family's situation.