If you’re handling a loved one’s estate in Delaware and need to access bank accounts, sell property, or pay final bills, you’ll likely need letters testamentary. These are official court documents that prove you have legal authority to act as executor of the estate. Without them, most financial institutions and government agencies won’t let you manage assets even if you’re named in the will.

What are letters testamentary in Delaware?

Letters testamentary are issued by the Delaware Register of Wills after reviewing a completed application and confirming the will is valid. They’re not the same as letters of administration (used when there’s no will) or small estate affidavits (for estates under $30,000 with no real property). The document names the executor and grants specific powers like collecting assets, paying debts, and distributing what’s left to carry out the will’s instructions.

When do you need to apply for letters testamentary in Delaware?

You need to apply when someone dies leaving a valid will and owns assets in their name alone like a house titled only in their name, a brokerage account without a payable-on-death designation, or unpaid wages. If all assets pass automatically (e.g., joint bank accounts, life insurance with named beneficiaries), letters may not be necessary. But if you’re trying to close an IRA, transfer vehicle titles, or file final tax returns using the estate’s EIN, you’ll almost always need them.

How to file for letters testamentary in Delaware: step by step

First, confirm the will was signed properly under Delaware law two witnesses, no notarization required. Then file a petition with the Register of Wills in the county where the deceased lived. You’ll need to provide the original will, a certified death certificate, and completed forms including the application for letters testamentary. A hearing isn’t usually required unless someone contests the will or questions your eligibility.

The Register of Wills reviews everything for completeness. If approved, they issue letters testamentary usually within 1–3 business days if all paperwork is in order. You’ll receive an original plus certified copies, which you’ll use when dealing with banks, title companies, and the IRS.

What documents do you need to get letters testamentary in Delaware?

The core items are the original will, a certified copy of the death certificate, and the completed petition form. You’ll also need proof of your identity (like a driver’s license), a list of known heirs and beneficiaries, and sometimes a preliminary inventory of estate assets. For full details on what’s expected, see our page on required documents for letters testamentary in Delaware.

Common mistakes people make when applying

  • Submitting a photocopy of the will instead of the original Delaware requires the original or a certified duplicate.
  • Using an outdated or incorrect version of the Register of Wills’ forms forms change, and old versions get rejected.
  • Leaving blanks on the petition, especially around heir information or asset estimates even “unknown” needs to be written in.
  • Forgetting to sign the petition in front of a notary the applicant must sign and notarize it before filing.

Where to file and how much it costs

You file with the Register of Wills in the county where the deceased resided: New Castle, Kent, or Sussex. Filing fees vary slightly by county but are typically around $25–$40 for the initial petition. Additional certified copies cost about $5 each. There’s no fee waiver process, but some counties offer basic form assistance during walk-in hours.

What happens after you get letters testamentary?

You can begin administering the estate: opening an estate bank account, notifying creditors, selling real property (if needed), and preparing a final accounting. Delaware doesn’t require court supervision for routine administration, but you must follow deadlines for example, publishing a creditor notice within 30 days of receiving letters. More details on what comes next are covered in our guide to Delaware estate administration paperwork requirements.

One thing to keep in mind: letters testamentary don’t expire, but banks and other institutions sometimes ask for a “fresh” certified copy if it’s more than 60 days old. It’s smart to request several certified copies upfront most Registers of Wills let you order extras at the time of issuance.

If you’re unsure whether letters testamentary are needed or whether a small estate affidavit might work instead you can review the Delaware Courts’ official small estate affidavit form and instructions to compare options.

Next step: Gather the original will and death certificate, then download the correct petition form from your county’s Register of Wills website. Double-check that every required field is filled in and signed in front of a notary before mailing or walking it in.