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.

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 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:
- File the original will, if there is one, and a petition to open probate with the county court where the person lived.
- Provide a certified death certificate and notice to the people the law requires.
- Attend the hearing or appointment, if your court holds one. Many uncontested estates are handled on the papers.
- Take the oath, and post a bond if the will does not waive it or the court requires one.
- 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:
- Get the estate’s federal tax ID (EIN) and open the estate bank account. The bank asks for your letters to do both.
- Access, consolidate, and close the deceased person’s financial accounts.
- Sort assets into what does and does not pass through court (see probate vs. non-probate assets).
- Deal with creditors and pay debts in the required order, then distribute what remains.
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?
How long does it take to get letters testamentary?
How many certified copies should I order?
Do I need letters testamentary if the estate is small?
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.