For years, the IRS automatically mailed an estate tax closing letter after it accepted a Form 706. Executors waited for it, lawyers relied on it, and title companies asked for it. Then the IRS stopped sending them automatically.
Today, an executor who wants formal proof that the IRS is done with the estate tax return has two options: request a closing letter and pay a fee, or use the estate's account transcript. Both work. Knowing which one you need, and when to ask, saves months.
What a closing letter is
The estate tax closing letter is IRS Letter 627. It states the net estate tax and confirms that the IRS has accepted the return, either as filed or after examination. It is not a release of every possible claim. It is the IRS's statement that, for the estate tax return, the file is closed.
Why it matters:
- Distributions. Executors are reluctant to make final distributions while the estate tax could still change. A closing letter supports that decision.
- Personal protection. Combined with a discharge request under IRC 2204, it helps the executor document that the estate tax is resolved.
- Title. Because the special estate tax lien attaches without any public filing, title examiners often want proof that the estate tax was resolved before insuring a sale.
- Portability. A surviving spouse relying on a DSUE amount wants to know the first return was accepted.
Notice 2017-12: the transcript alternative
When the IRS moved to issuing closing letters only on request, it published Notice 2017-12. The notice explains that an account transcript issued by the IRS can be used in lieu of Letter 627. The transcript reflects the same information: that the return was accepted or that the examination concluded.
Transcripts are free. Practitioners authorized on Form 2848 can obtain them through the IRS's transcript delivery system. Executors can request them on Form 4506-T. The guide to getting IRS transcripts for a deceased taxpayer covers the documentation the IRS wants.
Reading the transcript: TC 421
The key entry is transaction code 421. According to the IRS's closing letter guidance, TC 421 on the estate's account transcript means the return was accepted as filed or, if examined, that the examination has concluded.
If you see TC 421 with no subsequent assessments or open issues, the IRS has finished with the Form 706. Many title companies, lawyers and courts accept the transcript on that basis. Some still prefer the letter. Ask before you assume.
Requesting Letter 627
According to the IRS:
- Requests are made through Pay.gov by searching for the estate tax closing letter user fee. An account is not required.
- The user fee is $56 for requests made on or after May 21, 2025. It was $67 before that date.
- Wait at least nine months after filing Form 706 before requesting, unless the transcript already shows TC 421.
- If the return is under examination, request the letter at least 30 days after the examination concludes.
- Requests are usually researched within a few weeks, but the IRS does not give issuance date estimates.
The letter goes to the executor listed on the Form 706 at the estate's address of record, and to representatives authorized on Form 2848 or designees on Form 8821 for that return. Co-executors generally do not receive it unless the address of record is updated first using Form 56 and Form 8822.
That last point catches estates that changed executors or moved the file to a new law firm. If the address of record is stale, the letter goes to the stale address.
Letter or transcript?
| Need | Usually enough |
|---|---|
| Executor's own records | Transcript with TC 421 |
| Final distribution to family beneficiaries | Transcript with TC 421, if the beneficiaries and counsel agree |
| Title insurance on a sale of estate real estate | Ask the title company; many accept the transcript, some want Letter 627 |
| Court requirement or institutional trustee policy | Often Letter 627 |
When in doubt, the transcript is free and fast, so start there. Pay for the letter if someone with authority over the transaction insists on it.
When the transcript does not show TC 421
Sometimes a year passes and the transcript still shows no closing code. That usually means one of three things.
- The return is still being processed or classified. Estate returns move through a classification step where the IRS decides whether to examine them. That takes time.
- The return has been selected for examination. The transcript may show an exam-related code before any letter arrives. Make sure Form 56 and any Form 2848 are on file so the exam letter reaches the right people.
- There is a processing problem. A missing signature, missing schedules, or an unpaid balance can stall a return. The transcript may show a notice or a balance that explains it.
In each case, the answer is the same: find out why before distributing the reserve. An executor who assumes silence means acceptance is betting the reserve on it.
Changing executors or addresses
Estates change hands. An executor resigns, a co-executor takes over, or the file moves to a new attorney. The IRS will keep sending estate tax correspondence, including Letter 627, to the executor and address on the Form 706 until it is told otherwise.
The fix is to file Form 56 for the new fiduciary and Form 8822 to update the address of record before requesting the letter. The guide to Form 56 explains how to give notice of a new fiduciary and terminate the old one.
What a closing letter does not do
Closing the estate tax return does not close every IRS issue in the estate. It does not address:
- The decedent's individual income tax returns, including the final Form 1040.
- The estate's own income tax returns on Form 1041.
- Gift tax returns the decedent filed or should have filed.
- General federal tax liens for income taxes the decedent owed during life.
Those have their own processes. For income tax returns, the executor's tools are prompt assessment on Form 4810 and discharge under IRC 6905 on Form 5495.
And the closing letter does not stop the IRS from revisiting the first spouse's return to determine a DSUE amount when the surviving spouse's estate later applies it. IRC 2010(c)(5)(B) preserves that power regardless of the statute of limitations. See portability and the DSUE election.
Timing your distributions
A sensible approach for an estate that filed Form 706:
- File the return and pay the tax.
- File Form 5495 for discharge under IRC 2204.
- Make partial distributions while holding a reserve sized to the realistic audit risk.
- Check the transcript periodically for TC 421.
- When TC 421 posts and no exam is open, make final distributions, and request Letter 627 if anyone needs it.
The temptation is to distribute everything as soon as the return is filed. The three-year assessment period under IRC 6501(a) says otherwise. A little patience costs nothing. An audit after the money is gone costs a lot.
Closing letter versus discharge
Executors sometimes treat the closing letter and a discharge request as the same thing. They answer different questions. The closing letter or transcript shows the IRS accepted the Form 706. A request under IRC 2204(a), made on Form 5495, asks the IRS to notify the executor of the estate tax within nine months; on paying that amount, the executor is discharged from personal liability for any later deficiency. An executor who wants both the return closed and personal protection should pursue both.
If you need to close an estate and are not sure what the IRS has done with the Form 706, call (813) 229-7100. Let's talk.
Frequently asked questions
Does the IRS automatically send an estate tax closing letter?
No. The IRS issues Letter 627, the estate tax closing letter, only on request, and it charges a user fee. Under Notice 2017-12, an account transcript showing the return was accepted or the exam closed can be used instead.
How much does an estate tax closing letter cost?
According to the IRS, the user fee is $56 for requests made on or after May 21, 2025. It was $67 before that date. The fee is paid through Pay.gov when you request the letter.
When should I request the closing letter?
The IRS says to wait at least nine months after filing Form 706 before requesting, unless the estate’s account transcript already shows transaction code 421. If the return was examined, wait at least 30 days after the examination closes.
What does transaction code 421 mean on an estate tax transcript?
It means the Form 706 was accepted as filed or, if it was examined, that the examination has concluded. Once TC 421 appears, the estate can request the closing letter at any time, or rely on the transcript itself.