The mailing address for an estate is almost always the executor’s own address, or the attorney’s office address entered as a “care of” line. An estate has no home of its own, so the IRS and the probate court use the address of whoever is managing it. That address gets set early, on the application for the estate’s tax identification number, and then flows onto every return and notice that follows.
Whose Address to Use
The address on file for an estate should be a place where someone is actively opening the mail. In practice that means one of two choices: the executor’s own mailing address, or the address of the attorney handling probate, listed with a “C/O” line naming that attorney. The decedent’s old home is a poor choice if it sits vacant or is being sold, because tax notices and creditor claims that land there will go unseen.
Setting the Address When You Apply for the EIN
The estate’s official address is established the moment the executor applies for an Employer Identification Number on IRS Form SS-4. The IRS instructions say that when an executor or personal representative is named on the application, the mailing address entered should be the address of that executor or “care of” person, and that this address will generally be used on all of the estate’s tax returns going forward.1Internal Revenue Service. Instructions for Form SS-4 (12/2025)
Whatever you enter on the SS-4 becomes the default address the IRS associates with the estate. Getting it right the first time saves correction paperwork later.
Address on Form 1041
Form 1041 is the estate’s income tax return. The IRS instructions direct you to include the fiduciary’s street address with any suite or unit number. If you want a third party, such as an accountant or attorney, to receive the estate’s mail, you write “C/O” followed by that person’s name and address on the street address line.2Internal Revenue Service. 2025 Instructions for Form 1041 and Schedules A, B, G, J, and K-1
A P.O. box is acceptable if regular mail isn’t delivered to the fiduciary’s street address.2Internal Revenue Service. 2025 Instructions for Form 1041 and Schedules A, B, G, J, and K-1
Address on the Decedent’s Final Form 1040
The decedent’s final individual tax return follows a different rule, and it trips people up. If a surviving spouse is filing a joint return, the IRS says to enter the decedent’s name and address along with the surviving spouse’s information. If no joint return is being filed, the personal representative’s name and address go in the address field, not the decedent’s old address.3Internal Revenue Service. Topic No. 356, Decedents
The instinct is to put the decedent’s last known home address on their own final return. If that home is empty, any IRS notice or refund check sent there goes nowhere useful.
Telling the IRS Who the Fiduciary Is
The executor should also file Form 56 to formally establish the fiduciary relationship with the IRS. The form tells the IRS who is authorized to act on behalf of the estate and where that person can be reached. It is required whenever a fiduciary relationship is created or terminated.4Internal Revenue Service. Instructions for Form 56 (12/2024)
One limit worth knowing: Form 56 cannot be used to change the estate’s address after the fact. A different form handles that, covered below.4Internal Revenue Service. Instructions for Form 56 (12/2024)
Forwarding Mail That’s Still Going to the Decedent
Setting the estate’s address with the IRS and the probate court handles future correspondence, but it does nothing about mail still arriving at the decedent’s home. Bills, account statements, and insurance notices may keep showing up there for months. Redirecting that mail is one of the first practical steps.
USPS requires the executor or administrator to submit a change-of-address request in person at a Post Office. You need documented proof of your appointment, such as letters testamentary or letters of administration from the probate court. A death certificate alone is not enough.5USPS.com. How to Stop or Forward Mail for the Deceased
Changing the Estate’s Address Later
Circumstances shift during probate. The executor moves, hires a new attorney, or decides a different address works better. The process depends on who needs to know.
With the IRS
The IRS uses Form 8822 for address changes tied to individual, estate, or gift tax returns, and Form 8822-B for changes tied to the estate’s EIN, since the estate functions as a business entity for tax purposes.6Internal Revenue Service. Topic No. 157, Change Your Address – How to Notify the IRS The Form 1041 instructions specifically point to Form 8822-B for reporting a change of mailing address or a new “in care of” name after a return has been filed.2Internal Revenue Service. 2025 Instructions for Form 1041 and Schedules A, B, G, J, and K-1
If the address changes before the next return is filed, you can also check the “Change in fiduciary’s address” box in Item F on Form 1041 when you file it.2Internal Revenue Service. 2025 Instructions for Form 1041 and Schedules A, B, G, J, and K-1
With the Probate Court
Each probate court sets its own procedure, but in most jurisdictions a change of address means filing a notice of change of address with the court clerk. Fees for this type of notice are typically minimal or none. The updated address should then appear consistently on all later filings, including inventory reports, accountings, and creditor notices.
Keeping Creditors and Beneficiaries Informed
The IRS and the court are not the only ones who need a working address for the estate. Executors are generally required to mail notices to beneficiaries, heirs, and known creditors once probate is opened. Timelines vary by state, but most jurisdictions call for both newspaper publication and direct mail to identifiable creditors.
Those notices carry the estate’s mailing address so creditors know where to send claims. If the address changes, notifying creditors and beneficiaries directly is the safest course. A creditor who can argue they never received proper notice may be able to press a claim even after the probate case has closed.
What Goes Wrong When the Address Is Off
Using the wrong address, or failing to update it, is more than a paperwork annoyance. IRS notices about the estate’s tax obligations go to the address on file. If nobody is checking that address, deadlines get missed, and penalties and interest build on unpaid taxes before the executor knows there’s a problem.7Internal Revenue Service. Responsibilities of an Estate Administrator
On the probate side, executors owe a fiduciary duty to act diligently. Court notices or creditor claims piling up at an old address can expose the executor to personal liability. Beneficiaries kept in the dark can challenge the executor’s management and, in some cases, seek removal. Courts in most states have broad discretion to impose sanctions when a lapse in contact information harms the estate or interested parties.
Treat the estate’s mailing address like a business address. Someone competent should be checking it regularly, and every institution that writes to the estate should have the current version on file.