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Letters Testamentary: What They Are and How to Get Them

Letters testamentary are the one-page court document that proves you have legal authority to act for someone’s estate. Banks, brokerages, and county offices will not talk to you about the deceased person’s accounts until you show them. This guide explains what the document is, the different names states give it, how you get it, and everything it lets you do.

Settled Estate cover: letters testamentary and an executor’s legal authority
By Settled Estate Editorial Team

The Short Answer

Letters testamentary are issued by the probate court after it formally appoints you as the executor named in a will. They are your proof of authority: the document you hand a bank so it will let you access, move, or close the deceased person’s accounts. Without them, a financial institution has no way to know you are allowed to act, and it will not.

If there is no will, or the named executor cannot serve, the court appoints an administrator instead and issues letters of administration. Same job, different name. A few states use their own terms entirely, covered below.

Testamentary vs. Administration

The two names answer one question: how was the person in charge chosen?

  • Letters testamentary go to the executor a valid will names. The will speaks; the court confirms.
  • Letters of administration go to an administrator the court selects, usually a close relative, when there is no will or the named executor has died, declined, or been removed.

Either way the holder is the estate’s personal representative, with a fiduciary duty to gather assets, pay valid debts in order, and distribute what is left.

What Your State Calls Them

The document is nearly universal; the name is not. Open your state’s guide for the exact form, court, and steps:

Letters Testamentary (there is a will naming an executor)

Letters of Administration (no will, or no named executor who can serve)

Letters of Authority (the term used in Michigan and Ohio)

Letters of Appointment (the term used in Arizona)

Do not read a state’s naming choice as a difference in what the document does. A Michigan letter of authority and a Texas letter testamentary both prove the same thing: this person may act for the estate.

How to Get Them

The path is similar across states, even where the names differ:

  1. File the original will, if there is one, and a petition to open probate with the county court where the person lived.
  2. Provide a certified death certificate and notice to the people the law requires.
  3. Attend the hearing or appointment, if your court holds one. Many uncontested estates are handled on the papers.
  4. Take the oath, and post a bond if the will does not waive it or the court requires one.
  5. The court issues your letters. Order several certified copies at the same time.

The executor checklist shows where this step sits in the wider process, and the free probate assessment tells you whether a formal appointment is even required for your situation.

What They Unlock

Once you hold letters, most of the executor’s real work becomes possible:

Keep the certified copies safe and current. When an institution rejects one for being too old, the court can issue a fresh certified copy on request. For a question specific to your appointment, a probate attorney is the right call.

Frequently Asked Questions

What is the difference between letters testamentary and letters of administration?
Both are the same kind of court document: proof that a person has authority to act for an estate. The court issues letters testamentary when there is a will that names an executor, and letters of administration when there is no will, or the named executor cannot serve, so the court appoints an administrator instead. The powers are similar; the name reflects how the person was chosen.
How long does it take to get letters testamentary?
It depends on the court and whether anyone objects. After you file the will and a petition, the court schedules the appointment, and many uncontested estates receive letters within a few weeks to a couple of months. A contested appointment or a backlogged court can take longer. Deadlines and steps vary by state, so check your state guide and county court.
How many certified copies should I order?
Order several. Every bank, brokerage, and transfer agent will want its own recent certified copy, and many will not accept a photocopy or one older than 60 to 90 days. Executors routinely underestimate this and have to reorder. Ask the court what a certified copy costs and get more than you think you need.
Do I need letters testamentary if the estate is small?
Maybe not. Many states let a small estate pass by affidavit or a simplified procedure without a formal appointment, so no letters are issued at all. Whether you qualify depends on your state threshold and what the deceased person owned. A quick assessment can tell you whether a court estate is needed.

Information current as of July 14, 2026

Settled Estate is not a law firm, and this content is for informational purposes only and does not constitute legal advice. Probate laws and procedures in your state can change. Consult with a qualified attorney for advice specific to your situation. Full disclaimer.