An estate tax closing letter from the IRS (Letter 627) confirms that the agency has accepted a filed Form 706 or finished examining it. You need one if a probate court, state tax agency, bank, or title company requires proof of federal tax settlement before releasing the executor, transferring assets, or clearing title. The IRS no longer issues these letters automatically. You request one through Pay.gov for a $56 fee, or you can use a free IRS account transcript showing Transaction Code 421 as a substitute.1Internal Revenue Service. Estate Tax Closing Letter Fee Reduced to $56 Effective May 21, 20252Internal Revenue Service. Notice 2017-12 – Relating to the Availability and Use of an Account Transcript as a Substitute for an Estate Tax Closing Letter
When You Actually Need the Letter
Probate courts in many jurisdictions will not release the executor from fiduciary duties or discharge a surety bond until they see a closing letter or its equivalent. Without that proof, the court can keep the estate open indefinitely. State tax agencies sometimes rely on the federal closing letter to verify state-level estate or inheritance tax filings before issuing their own clearance certificates.
Financial institutions and title companies often ask for the same evidence before releasing large accounts or clearing real estate sales. The reason is the automatic federal estate tax lien: federal law places a lien on the gross estate at the moment of death that runs for 10 years unless the tax is paid in full sooner.3Office of the Law Revision Counsel. 26 U.S. Code 6324 – Special Liens for Estate and Gift Taxes Buyers and lenders want assurance the government will not surface a claim after a transfer, and the closing letter is the cleanest evidence that the lien has been resolved.
If none of these parties are asking for it, and no state process depends on it, you may not need one at all. The letter is a tool for proving federal acceptance to someone who wants proof; it is not a filing obligation.
What the Letter Confirms, and What It Does Not
Letter 627 states that the IRS has accepted the return as filed or completed its examination and settled any adjustments.4Internal Revenue Service. Frequently Asked Questions on the Estate Tax Closing Letter It is not an absolute bar against future action. Under Revenue Procedure 2005-32, the IRS can reopen a closed examination if there is evidence of fraud, collusion, concealment, or misrepresentation of a material fact; if the closed case involved a clearly defined substantial error based on an established IRS position at the time; or if failing to reopen would be a serious administrative omission.5Internal Revenue Service. Rev. Proc. 2005-32 Reopening is rare in practice, but an executor who knowingly undervalued assets or omitted property would not be shielded.
Why It Matters for the Executor Personally
Beyond satisfying courts and banks, the closing letter addresses a real personal risk. Under 31 U.S.C. 3713, government claims against a decedent’s estate take priority when the estate lacks assets to pay everything. An executor who distributes to heirs before satisfying what the government is owed can be held personally liable for the unpaid amount.6Office of the Law Revision Counsel. 31 U.S.C. 3713 – Priority of Government Claims The closing letter, or a transcript showing Transaction Code 421, is evidence that the IRS treated the tax obligation as satisfied at the time of review. It does not eliminate liability where fraud or misrepresentation exists, but for an executor who filed an accurate return, it is meaningful protection.7Internal Revenue Service. Insolvencies and Decedents’ Estates
How to Request the Closing Letter
Requests and payment go through a single form on Pay.gov. The fee is $56, reduced from $67 effective May 21, 2025.1Internal Revenue Service. Estate Tax Closing Letter Fee Reduced to $56 Effective May 21, 2025 You will need a Pay.gov account, and the form asks for the decedent’s name, Social Security number, and date of death, along with the executor’s name and current mailing address.8Pay.gov. Estate Tax Closing Letter User Fee
Timing matters. Do not submit the request until at least nine months after filing Form 706, because the IRS typically makes its initial audit decision within that window. If the return is under examination, wait at least 30 days after the examination concludes. You can submit at any time if you have already confirmed that Transaction Code 421 appears on the estate’s account transcript.
After you submit, the IRS generally researches the request within about three weeks. If TC 421 is already posted, the letter is assigned for production and review, which takes several additional weeks. If TC 421 has not posted, the IRS rechecks roughly every 60 days until it does. The IRS does not provide status updates or estimated issuance dates before the letter is mailed.4Internal Revenue Service. Frequently Asked Questions on the Estate Tax Closing Letter
Using a Free Account Transcript Instead
IRS Notice 2017-12 confirms that an account transcript showing Transaction Code 421 substitutes for a formal closing letter.2Internal Revenue Service. Notice 2017-12 – Relating to the Availability and Use of an Account Transcript as a Substitute for an Estate Tax Closing Letter TC 421, labeled “Closed examination of tax return,” means the IRS has accepted the return as filed or finished examining it. The transcript is free and often arrives faster than the formal letter. Many courts and title companies will accept it; ask before paying for Letter 627.
There are two ways to get the transcript:
- Registered tax professionals can pull it online through the IRS Transcript Delivery System (e-Services). Wait at least nine months after filing Form 706 to request through TDS.9Internal Revenue Service. Transcripts in Lieu of Estate Tax Closing Letters
- Executors or authorized representatives can request a paper transcript by mail or fax using Form 4506-T, entering “Form 706” on line 6. Wait at least six months after filing before submitting.9Internal Revenue Service. Transcripts in Lieu of Estate Tax Closing Letters
If an attorney or accountant will pull the transcript, they must be authorized on Form 2848.
If You Need to Sell Property Before the Letter Arrives
The automatic estate tax lien can block a real estate sale long before the IRS issues any closing letter. Form 4422 requests a certificate of discharge that releases specific property from the lien. Submit it at least 45 days before the planned transaction, with the sales contract, legal description of the property, an appraisal, and proof of the executor’s authority such as letters testamentary.10Internal Revenue Service. Application for Certificate Discharging Property Subject to Estate Tax Lien (Form 4422) Estates that are not required to file Form 706 can still use Form 4422 when a discharge is needed to complete a sale.
The Three-Year Assessment Clock Is Separate
The IRS generally has three years from the date Form 706 was filed to assess additional estate tax. The estate tax statute has a distinctive feature: unlike income tax, the law prohibits consent extensions of the assessment period for estate tax.11Office of the Law Revision Counsel. 26 U.S.C. 6501 – Limitations on Assessment and Collection Once three years pass without an assessment, the IRS generally cannot come back for more tax unless a fraud or substantial omission exception applies.
This clock runs independently of the closing letter. You can receive a closing letter well before the three years expire, or the three years can expire without a letter ever being requested. Executors who want the strongest position before making final distributions often wait for both: the closing letter or a transcript with TC 421, and expiration of the three-year assessment period.