What a Letter 1153 is
A Letter 1153 is the preliminary notice that the IRS intends to assess the trust fund recovery penalty against you as an individual. The Internal Revenue Manual describes what it does:
“Notifies the responsible person of the proposed assessment; Contains a description of the available appeal rights; Affords the responsible person the opportunity to agree to or to appeal the assessment.” — Internal Revenue Manual 5.7.4.7(2)
It is a required step, and the requirement is statutory. Section 6672(b)(2) provides that the mailing of that preliminary notice “shall precede any notice and demand of any penalty under subsection (a) by at least 60 days.” The IRS cannot bill you for this until it has told you and waited.
With one exception, which the statute states and the manual repeats twice. Section 6672(b)(4): “This subsection shall not apply if the Secretary finds that the collection of the penalty is in jeopardy.” The manual is blunter — “The 60-day rule does not apply to a jeopardy assessment” — and a jeopardy assessment is one of only three things that lets the process move before the period expires, the others being the period expiring and a protest arriving. It is uncommon and it is not nothing, and a page that promises you sixty guaranteed days has overstated it.
What it is not. It is not a bill, it is not a lien or a levy, and it is not the business's debt being transferred. The trust fund recovery penalty is a separate assessment against a separate taxpayer — you — for a defined slice of the business's liability. The business still owes what it owes.
And the letter goes to the person, not to the business. More than one person can receive one for the same quarters, and each is proposed at the full amount.
One category of person is taken out by the statute itself, and it is worth naming because these people are routinely frightened by this letter. Section 6672(e) exempts an unpaid, volunteer member of the board of a tax-exempt organization who “(1) is solely serving in an honorary capacity, (2) does not participate in the day-to-day or financial operations of the organization, and (3) does not have actual knowledge of the failure on which such penalty is imposed.” All three, together. The manual applies it and adds that willfulness is difficult to establish against such a person in any event.
Sources: IRM 5.7.4 (revision 1 July 2025), IRM 5.7.6 (revision 5 June 2025), IRC 6672 — read 6 September 2026.
What is actually in the envelope
Five documents, and knowing what each does saves a great deal of guessing.
| Document | What it is |
|---|---|
| Letter 1153 | The proposal, and the description of your appeal rights |
| Form 2751 | “Provides a report of the business liability ... a breakdown of the proposed TFRP assessment for each quarter ... Allows the responsible person to agree to the proposed assessment” |
| Publication 1 | Your rights as a taxpayer |
| Page 4 of Form 4183 | Part of the officer's recommendation |
| ATFR calculation sheets | “showing the penalty computation ... so that they are aware of how payments were applied to the account” |
The last two are the ones nobody reads and they are the ones that show the working. The calculation sheets show how the IRS applied the business's payments across the quarters — which decides how much trust fund liability remains in each one, and therefore the number being proposed against you.
The amount, and what it does not include
The penalty equals the unpaid trust fund tax: withheld income tax plus the employee's portion of withheld FICA. The IRS: “The amount of the penalty is equal to the unpaid balance of the trust fund tax.”
It does not include the employer's matching share of FICA, and it does not include the penalties and interest on the business account. In practice that means the number proposed against you personally is materially smaller than the business's balance. How much smaller depends on your wage mix and on how the business's payments were applied across the quarters — and the calculation sheets in your envelope show both, which is why they are worth reading before you decide anything.
This is worth checking rather than assuming. A proposal built on the wrong application of the business's payments proposes the wrong number, and the calculation sheets are in the envelope specifically so that you can see how they were applied.
Your 60 days — measured from what
The trigger is the one detail people most often get wrong, and it is not the date you opened the envelope.
“the responsible person has 60 days (75 if the letter was addressed outside of the United States) from the date of the mailing of the notice or the date of personal delivery to respond.” — Internal Revenue Manual 5.7.6.2
Timeliness is measured on the postmark, not on receipt at the IRS:
“A protest is timely if it is postmarked or mailed by certified or registered mail, so that the mailing date can be proven, on or before the 60th day (75th day if the letter was addressed outside of the United States) after the date Letter 1153 was mailed or personally delivered. A private postage meter stamp is not evidence of when a request for appeal was mailed; it merely establishes when it was stamped.”
That last sentence is a free, specific, actionable instruction and it appears on almost no other page about this letter. Send it certified or registered, and keep the receipt.
And the day itself can move. The same subsection continues: “In determining the timeliness of the appeal, the guidelines in IRC 7503 should be followed, which state in part: ‘When the last day prescribed under authority of the internal revenue laws for performing any act falls on Saturday, Sunday, or a legal holiday, the performance of such act shall be considered timely if it is performed on the next succeeding day which is not a Saturday, Sunday, or a legal holiday.'” If your sixtieth day is a Sunday, you have Monday. Which is worth knowing and is not worth relying on.
There is a five-day allowance and it is not yours. The manual instructs the IRS to wait “an additional five days for receipt and processing of timely mailed protests” before issuing notice and demand. That is the IRS's processing margin. It is not an extension and you should not write your deadline as 65 days.
And there is a ten-day invitation on the letter that preserves nothing. The letter tells you that you may contact the revenue officer within ten days of delivery to discuss the matter informally. That is worth doing and it is not a step in the appeal:
“In order to preserve their appeal rights, the responsible person must mail (or fax, if applicable) a written appeal within 60 days of the mailing or personal delivery of Letter 1153.”
Both sentences travel together or neither does. Calling the officer and being told they will look at it again is not a protest.
Which appeal you file, and the threshold that catches people
| Amount proposed | What to file |
|---|---|
| $25,000 or less | Small Case Request |
| More than $25,000 | Formal Written Protest |
And here is the sentence that matters, because the notice lists quarters separately:
“A responsible person may contest all of the periods listed in the notice in a single protest. However, If one tax period and/or the sum of all the tax periods is more than $25,000 the responsible person must submit a Formal Written Protest.” — Internal Revenue Manual 5.7.6.4
Four quarters at $9,000 each is $36,000, and a Formal Written Protest is required. Looking at the largest single quarter and reaching for the simpler document is the natural mistake, and it is a mistake about form rather than about time.
Which matters because of what the manual says about timeliness: “A protest filed within the appropriate time frame is considered timely even if it is incomplete.” The clock forgives an incomplete protest. It is the wrong kind of protest, and no protest, that cause the damage.
One thing a protest costs, and it should be said rather than discovered. The same Note continues: “If a protest is timely filed in a case in which Letter 1153 was properly delivered before the expiration of the ASED, the ASED will not expire before 30 days after Appeals' final administrative determination or 90 days after the date of the mailing or delivery of the Letter 1153, whichever is later.” Filing a protest extends the period the IRS has to assess. That is normally the right trade — an appeal is worth more than a statute that may not have been about to expire anyway — but it is a trade, and this is not a page that pretends otherwise.
The refund freeze that has probably already happened
When the delivery date of your Letter 1153 is entered into the IRS's system, a freeze is applied to your personal account:
“ATFR will systemically upload TC 130, Entire Account Frozen from Refunding, to freeze any potential refunds when a Letter 1153 delivery date is entered on ATFR.” — Internal Revenue Manual 5.7.4.7(2)
Nothing has been assessed against you, you may be intending to appeal and may win, and your personal refunds can be frozen before any of that is decided. The trigger is administrative — the freeze goes on when the delivery date is keyed into the IRS's system, not at the moment of delivery — and it sits on your individual account, where it is visible on your own transcript.
It is reversible, and by the same paragraph. The manual instructs the officer to review the freeze for reversal by a TC 131 where the trust fund liability is paid in full, and again “if the TFRP will not be assessed on any periods.” There is also a Letter 1153-W, which the IRS issues to withdraw the proposal outright when new information changes the recommendation — the mechanism behind the outcome this page's close describes, and one that cannot be issued once a protest has gone to Appeals.
We are stating all of this because it is true and because it is checkable, not to alarm. It is the clearest illustration on the page of why the sixty days should be used rather than watched.
If you already signed Form 2751
This is the most valuable paragraph on the page for anyone who signed at the interview, and the IRS's manual says it twice:
“Do not treat a signed Form 2751 as a conclusive waiver until the 60 or 75-day restriction period (plus five additional days) expires, as a responsible person may change their mind after signing the waiver. A responsible person's signature on Form 2751 does not extinguish their appeal rights.” — Internal Revenue Manual 5.7.4.7(2), and again at 5.7.4.2.4(10)
Read what that is and what it is not. It is an instruction to IRS employees about how to treat a signature during the restriction period. It is not a general right to change your mind at any time, and it does not extend anything: acting on it means filing the protest inside the same sixty days as everybody else.
But if you signed in the room because it seemed like the cooperative thing to do, and you have since had second thoughts, the window is very probably still open. That is a genuinely different position from the one most people in that situation believe they are in.
What happens if you do nothing
After the period expires with no protest, the case is treated as unagreed and the penalty is assessed. From there it is a personal tax debt: notice and demand, then the ordinary collection machinery — a federal tax lien determination, and levy tools — against you rather than against the business.
What you lose is the route to Appeals. What you keep is worth naming, because most pages on this letter stop at the loss:
“Advise the responsible person they may file Form 843, Claim For Refund and Request for Abatement, once the TFRP is assessed.” — Internal Revenue Manual 5.7.6.7
And section 6672(c) provides a bond-and-refund route for stopping collection while the liability is litigated. It is not open-ended and its clock is shorter than the one you just missed: it requires, “within 30 days after the day on which notice and demand of any penalty under subsection (a) is made,” paying at least the minimum amount required to commence a court proceeding, filing a claim for refund, and furnishing a bond of “1½ times the amount of excess of the penalty assessed over the payment.” A further 30 days runs from a refund denial to begin the proceeding. So “longer, harder road” is right about the effort and wrong about the time: the door opens and closes inside a month of the assessment.
One more thing that survives, and it is aimed at co-owners:
“If more than 1 person is liable for the penalty under subsection (a) with respect to any tax, each person who paid such penalty shall be entitled to recover from other persons who are liable for such penalty an amount equal to the excess of the amount paid by such person over such person's proportionate share of the penalty. Any claim for such a recovery may be made only in a proceeding which is separate from, and is not joined or consolidated with— (1) an action for collection of such penalty brought by the United States, or (2) a proceeding in which the United States files a counterclaim or third-party complaint for the collection of such penalty.” — Internal Revenue Code section 6672(d)
Three limits, and the third is in the statute's own second half. It is a civil claim between the people, not something the IRS administers — you cannot ask the IRS to split it. It belongs to a person who has paid, not to one deciding whether to. And it must be brought as a separate proceeding, not folded into the government's collection action against you. Bringing one is a lawyer's question rather than a CPA's, which is worth saying because it is the point at which a lot of this stops being a tax problem. Ask on the free call and you will be pointed toward someone who does that work — it is a short list in Kentucky and there is no reason for you to build it from search results at midnight.

