Three documents, three different protections
| Document | What it does | Authority | Who benefits |
|---|---|---|---|
| Estate tax closing letter (Letter 627) | Confirms the IRS has accepted the Form 706 as filed or finished examining it, and states the net estate tax. An administrative letter, not a statute of limitations | IRS practice; user fee set by T.D. 9957 and reduced by T.D. 10038 | The estate, for probate courts, state tax authorities and beneficiaries |
| Form 4810, Request for Prompt Assessment | Shortens the period for the IRS to assess the decedent's (or a dissolving corporation's) income, gift, employment or excise tax to 18 months from the request | IRC 6501(d); Treas. Reg. 301.6501(d)-1 | The estate and its beneficiaries, who can distribute sooner |
| Form 5495, Request for Discharge from Personal Liability | Releases the executor personally from liability for later-found deficiencies in the decedent's income and gift taxes (IRC 6905) and the estate tax (IRC 2204) after 9 months if the IRS does not notify an amount | IRC 2204 and 6905 | The executor or fiduciary personally; the estate's assets remain liable |
None of these is a substitute for the others. A closing letter does not shorten any statute or discharge anyone. Form 4810 does not apply to the estate tax at all. Form 5495 protects the fiduciary's own assets, not the estate's. The Form 56 fiduciary notice is the foundation for all three: it tells the IRS who the executor is, and the closing letter and discharge are only issued to the fiduciary of record or an authorized representative.
The estate tax closing letter
Background. “For all estate tax returns filed on or after June 1, 2015, estate tax closing letters will be issued only upon request by the taxpayer.” Treasury imposed a $67 user fee effective October 28, 2021 (T.D. 9957), then reduced it: “Treasury Decision 10038 and REG-107459-24 reduce the user fee imposed on persons requesting an estate tax closing letter to $56, effective May 21, 2025.” The fee is fixed by the request date.
How to request one. Only through Pay.gov: “An estate tax closing letter (ETCL) will not be issued unless a request is made via Pay.gov.” Search for “estate tax” or “closing letter,” select the Estate Tax Closing Letter User Fee form, check the acknowledgment box (the request is not processed without it), and pay by ACH, card, PayPal or Venmo. No account is needed. Correspondence requests are denied with Letter 6477, and “No estate tax closing letters will be issued over the phone.”
When to request it. “To allow time for processing, please wait at least 9 months after filing Form 706 to request an ETCL.” The reason is the transcript: “A closing letter cannot be issued until TC 421 is posted and the account is full paid.” TC 421 posts when the return is accepted as filed or an examination closes. An early request is researched within about three weeks and then “will be researched again about every 60 days until the TC 421 has posted”; the fee is not refunded for waiting. Executors may call 866-699-4083 for status only if the request was made at least nine months after filing and a further 120 days have passed.
Who receives it. “ETCLs are not issued to the addresses input at Pay.gov. ETCLs are issued only to addresses of record.” That means the executor on Form 706 lines 6a and 6b (Form 706-NA lines 9a and 9b), plus representatives on a Form 2848 or designees on a Form 8821 for the Form 706 who checked the copies box. Other co-executors and unauthorized preparers get nothing. If the executor has moved, file Form 8822 and allow four to six weeks before paying the fee.
Scope and refunds. “Closing letters only apply to Form 706 and Form 706-NA.” A supplemental or amended Form 706 requires a separate request and fee. Fee refunds “will be issued only in limited cases”; requests go by email to the campus mailbox in the FAQ with the Pay.gov tracking ID.
The transcript alternative
Notice 2017-12 made the account transcript an acceptable substitute: “Account transcripts, which reflect transactions including the acceptance of Form 706 and the completion of an examination, may be an acceptable substitute for the estate tax closing letter.” An authorized representative pulls it through the Transcript Delivery System; otherwise the executor files Form 4506-T, generally processed within 10 business days. Look for TC 421. The transcript is free and immediate; whether a probate court or state will accept it instead of Letter 627 is a question for that body.
Form 4810: request for prompt assessment
The statute. IRC 6501(d) provides that, for “any tax (other than the tax imposed by chapter 11 of subtitle B, relating to estate taxes) for which return is required in the case of a decedent, or by his estate during the period of administration, or by a corporation,” the tax must be assessed “within 18 months after written request therefor” by the executor, administrator, fiduciary or corporation, “but not after the expiration of 3 years after the return was filed.” The request shortens the normal three-year period; it never lengthens it, and it does not override the exceptions in 6501(c), (e) or (f). The regulation requires that it “must be transmitted separately from any other document,” state the classes of tax and periods, and “clearly indicate that it is a request for prompt assessment under the provisions of section 6501(d).” It covers only returns already filed; later returns need another request.
For corporations. A corporation can use 6501(d) only in connection with a dissolution contemplated within the 18 months or already begun in good faith, and completed; Form 4810 has three checkboxes for those cases. See closing a business with the IRS.
The form. Form 4810 (Rev. August 2022) asks for the kind of tax (income, gift, employment or excise), the requester, and for each return the form number, period, TIN, name and address, service center and date filed. The requester signs under penalties of perjury and certifies never having been assessed a civil fraud penalty or charged with fraud. A letter with the same information works. Attach letters testamentary or of administration and copies of the returns marked “COPY - DO NOT PROCESS AS ORIGINAL.” “Do not file Form 4810 requesting prompt assessment until after you file the tax returns listed on the front of this form.”
Where. To the service center where the returns were filed. For gift tax on Form 709, the form gives a specific address: Internal Revenue Service, Stop 824G, 7940 Kentucky Drive, Florence, KY 41042-2915. Private delivery services cannot deliver to a P.O. box.
What the campus does. IRM 4.25.2.5.6 treats the form as urgent: “Form 4810 is a time sensitive document,” assigned “in a red statute folder,” with “a one-day turnaround from receiving Form 4810 to requesting returns.” The technician verifies that the request was sent separately, the listed returns were filed first, the signer has authority attached, and the tax, form and period are stated. A valid request produces a TC 560 on each listed year and a Letter 621-C acknowledgment. A Form 4810 listing a Form 706 is denied, because “IRC 6501(d) excludes from the request for prompt assessment those taxes imposed by chapter 11 of subtitle B, relating to estate taxes.” Listed gift tax returns reporting only cash or marketable securities with valuation data, or values under $1 million, are accepted as filed; anything else goes to the National Gatekeeper for classification, which is to say possible examination within the 18 months.
A prompt assessment request invites a look at the returns it lists. For a decedent with hard-to-value gifts, closely held business interests or aggressive positions on the final Form 1040, the request trades a three-year wait for an 18-month period that is more likely to include an examination. It is a judgment call for the fiduciary, not an automatic step.
Form 5495: discharge from personal liability
Two statutes. IRC 6905 covers the decedent's income and gift taxes: after the executor applies in writing, the executor, “upon payment of the amount of which he is notified, or 9 months after receipt of the application if no notification is made by the Secretary before such date, shall be discharged from personal liability for any deficiency in such tax thereafter found to be due.” IRC 2204 does the same for estate tax, with the IRS required to notify the amount “within 9 months after the making of such application” (or after the return is filed, if later), and discharge on payment plus any bond required for tax deferred under IRC 6161, 6163 or 6166. Section 2204(b) gives a non-executor fiduciary holding estate property a six-month period. “Executor” means “the executor or administrator of the decedent appointed, qualified, and acting within the United States.”
The form. Form 5495 (Rev. December 2008, still current) asks for the decedent's name, SSN and date of death, the kind of tax (income, gift or estate), the requester, and the same per-return detail as Form 4810, with the same perjury declaration and fraud certification. Attach copies of the returns and the letters testamentary or of administration. Income and gift tax requests wait until the returns are filed; for estate tax, “you may attach this form to Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return, or you may file this form any time during the 3-year period following the date the Form 706 is filed,” attaching pages 1 through 3 and Schedules A through I if filed later. A non-executor fiduciary checks “Other” and attaches the trust instrument and a list of assets the decedent transferred to the trust.
Where. To the service center where the returns were filed, with separate forms for different centers. The cover sheet on the current IRS PDF gives one address for gift tax discharge or whenever a Form 706 has been filed: Internal Revenue Service, Stop 824G, 7940 Kentucky Drive, Florence, KY 41042-2915.
What the campus does. IRM 4.25.2.5.7 assigns the form to a tax technician “to make the determination if the request for discharge from personal liability should be granted,” and states the deadlines the statutes impose on the IRS: “Requests received from a fiduciary must be worked within six months of the received date” and “Requests received from an executor must be worked within nine months of the received date.” If the IRS misses them, “the fiduciary or executor is automatically discharged from personal liability (applying only to them in their personal capacity and their personal assets).” If no return has posted, the form is held or sent back with Letter 738-C; if the Form 706 is under examination, the request is monitored; if the return is accepted with a zero balance, the campus issues Letter 6150, U.S. Estate or Gift Tax Discharge from Personal Liability/Property. “Never send a Letter 6150 when there is a balance due on the account.”
What none of them does
- The estate's assets stay liable. Form 5495 discharges the executor personally. The IRM's parenthetical is the whole point: the discharge applies “only to them in their personal capacity and their personal assets.” The estate tax lien under IRC 6324(a) attaches to the gross estate for ten years from death, and distributees are personally liable for estate tax to the extent of property received under IRC 6324(a)(2). The IRS can also pursue beneficiaries as transferees; see transferee liability under IRC 6901.
- Fiduciary liability under 31 USC 3713 is separate. A fiduciary who pays other debts before federal tax claims can be personally liable under the federal priority statute. Section 6905 and 2204 discharges address deficiencies later found; they are not a defense to having distributed ahead of a known tax debt.
- Form 4810 does not touch the estate tax, and shortens nothing for unfiled years. The three-year period still governs returns not listed, and the fraud and substantial omission exceptions remain.
- A closing letter is not a closing agreement. It confirms acceptance of the return as filed; it does not bar a later examination within the statute. The Form 706 instructions note that a Schedule PC protective claim does not delay the letter either. A refund claim for estate tax filed later on Form 843 is processed on its own terms.
- None of them revokes the fiduciary relationship. When administration ends, a final Form 56 noting termination tells the IRS to stop sending notices to the executor; see Form 56 and representing an estate.
Questions practitioners ask
Can the representative request the closing letter?
Anyone can pay the fee at Pay.gov, but the letter is mailed only to the address of record (the executor on line 6a and 6b of Form 706) and to representatives or designees on a Form 2848 or 8821 for the Form 706 who checked the copies box. A preparer without authorization will not receive it.
We requested the letter at six months and nothing has arrived. Did we waste the fee?
The fee is not refunded for a premature request; the campus rechecks for TC 421 about every 60 days and issues the letter once it posts and the account is paid. The IRS asks that status calls wait until nine months after filing plus 120 days after the request.
Does Form 4810 cover the estate's Form 1041 income tax returns?
Yes. IRC 6501(d) applies to any tax other than estate tax for which a return is required by the decedent or by the estate during administration, which includes Forms 1041 already filed. Each return must be listed, and returns filed later need a new request.
Does Form 5495 protect the executor against the estate tax on an amended or supplemental Form 706?
The discharge covers deficiencies thereafter found in the tax for which the request was made. A supplemental return reporting additional tax is a new filing; the instructions require a separate request for returns filed after the Form 5495.
The decedent never filed gift tax returns for gifts we found. Can we still use these forms?
Only after the returns are filed. Both forms apply to returns already filed. A Form 4810 request listing newly filed Forms 709 triggers the 18-month period for those years; gifts other than cash or marketable securities under $1 million will be sent for classification.