What the penalty covers
IRC 6672(a) imposes a penalty on “Any person required to collect, truthfully account for, and pay over any tax imposed by this title who willfully fails to collect such tax, or truthfully account for and pay over such tax”, equal to the total amount not paid over. For Form 941 liabilities, IRM 5.7.4.3 says the TFRP equals the employees' share of FICA and income tax withholding; the employer's share of FICA, FUTA and penalties and interest on the business account are not part of it. The penalty also reaches collected excise taxes and other withheld taxes. IRM 5.7.4.3 lists “Form 945, Annual Return of Withheld Federal Income Tax - TFRP is one hundred percent of the tax.” Form 945 reports income tax withheld from nonpayroll payments, including backup withholding, and its 2025 instructions carry the same TFRP warning; see the TFRP and backup withholding. More than one person can be liable for the same penalty, and IRC 6672(d) gives a responsible person who pays more than their share a right of contribution against the others, in a separate proceeding.
The trust fund portion is also a pressure point in other procedures. A business cannot get an offer investigated on trust fund taxes until the trust fund portion is paid or the TFRP has been assessed or determined against all responsible persons (IRM 5.7.4.9; Form 656 Booklet), and trust fund taxes are priority claims that survive bankruptcy discharge (11 USC 507(a)(8)(C), 523(a)(1)(A)). See offers in compromise and bankruptcy.
Who is a responsible person
IRM 5.7.3.4.1: “Responsibility is a matter of status, duty, and authority.” A responsible person has the duty to perform, the power to direct collection of trust fund taxes, accountability for and authority to pay them, and authority to decide which creditors are paid. The list of potential responsible persons is broad: officers, directors and shareholders; partners; LLC members and managers; employees; lenders and sureties; other entities; and payroll service providers and professional employer organizations and the people inside them.
Revenue officers look at bylaws and check-signing authority, then at who hires and fires, who decides which creditors to pay, who signs and files Forms 941, who controls payroll and disbursements, who controls voting stock and who makes deposits. The IRM is careful about what does not settle the question on its own (IRM 5.7.3.4.1.1):
- Officer status or stock ownership alone.
- Check-signing authority alone; “Signatory authority may be merely a convenience.”
- Delegation does not let a person with ultimate financial authority escape responsibility unless the delegation left them powerless to disburse funds, though it may matter for willfulness.
- Unpaid volunteer board members of exempt organizations serving in an honorary capacity, with no role in day-to-day or financial operations and no actual knowledge, are excluded by IRC 6672(e), unless that would leave no one liable.
Non-owner employees get specific protection under Policy Statement 5-14, quoted in IRM 5.7.3.4.1.2: individuals performing ministerial acts without exercising independent judgment will not be deemed responsible. The IRM's examples are a bookkeeper who pays only the bills the treasurer gives her and a secretary who signs checks at the owner's direction. But a non-owner officer with “significant control” over finances, such as a controller who decides which creditors to pay or can obtain financing, cannot avoid responsibility by showing an owner told them not to pay the taxes; the IRM cites Brounstein v. United States for the point that such employees may have to quit rather than follow those orders.
Willfulness
IRM 5.7.3.4.2 defines the second element: “Willful means intentional, deliberate, voluntary, reckless, knowing, as opposed to accidental. No evil intent or bad motive is required.” The government generally must show the responsible person “was aware, or should have been aware, of the outstanding taxes and either intentionally disregarded the law or was plainly indifferent to its requirements.” The IRM adds that a responsible person's “failure to investigate or correct mismanagement after being notified that withholding taxes have not been paid” satisfies willfulness.
The IRM says willfulness is difficult to establish for assessments from Combined Annual Wage Reporting, for IRC 3509 worker reclassification assessments, and for volunteer board members, where actual knowledge may be required. Several further paragraphs of IRM 5.7.3.4.2 are redacted in the public IRM, so the IRS's internal criteria beyond these points are not published.
People who take over after the taxes went unpaid. A new owner or officer inherits the payroll problem but not automatically the penalty for it. In Slodov v. United States, 436 U.S. 238 (1978), an orthodontist bought three food vending companies that owed about $250,000 in taxes, including withheld employment taxes, discovered the next business day that the bank accounts were overdrawn and the withheld money gone, and over the following months used the receipts the businesses generated to pay wages, rent and suppliers rather than the back taxes. The Supreme Court held that he was not liable under IRC 6672 for the pre-acquisition trust fund taxes: the statute does not impose a trust on after-acquired funds, because “there must be a nexus between the funds collected and the trust created,” and a person who takes control when there are no funds with which to pay the old liability does not act willfully by using later receipts for current operations. The Court also rejected the argument that a responsible person must have been in a position to collect, account for and pay over the specific tax dollars; anyone with the general authority described above is covered. Two limits make the holding narrower than clients hope. First, Slodov held that a successor does violate IRC 6672 by failing to pay over trust fund taxes collected before he took control “when at the time he assumed control the corporation has funds impressed with a trust under § 7501,” so cash on hand at the takeover must go to the old withholding first. Second, the person is fully responsible for every quarter during his own tenure. In practice, a buyer or new controller should document the cash position on the day of the change, pay over whatever unencumbered cash existed, and treat all withholding from the first payroll forward as untouchable.
How the investigation runs
A revenue officer usually opens the TFRP investigation while working the business's balance due (see revenue officers). The core tool is Form 4180, the record of a personal interview with each potentially responsible person. IRM 5.7.4.2.4 is specific: “Do not give or mail Form 4180 to the potentially responsible person(s) or representative for completion by that person or for review prior to the interview.” The interview is done in person or by phone, may be compelled by summons, and is supplemented by bank signature cards, canceled checks, corporate records and third-party interviews.
Preparation matters more than anything else in a TFRP case. Before the 4180 interview, gather the bylaws, minutes, bank signature cards, check registers for the periods, and who approved which payments. Answers given in the interview are the evidence the revenue officer's Form 4183 recommendation rests on.
The revenue officer documents the recommendation on Form 4183, which a group manager must approve. The TFRP amount is computed on the Automated Trust Fund Recovery system, which applies payments according to the payment application rules (IRM 5.7.4.3).
Collectibility is part of the decision. IRM 5.7.5 requires a collectibility determination before the penalty is assessed. The revenue officer secures Form 433-A (Form 433-F may be used for a wage earner when the potential penalty is under $100,000) and weighs current finances, bankruptcy, income history and future earning potential, asset potential and the likelihood of refund offsets (IRM 5.7.5.4). The IRM's table then directs the outcome: any present or future ability to pay means assess; no present but future ability means assess and prepare a pre-assessed Form 53 (CNC) with a lien where appropriate; and where “No present or future collection potential exists over the collection statute period” the instruction is “Do not assess the TFRP”. Nonassertion on that ground is recommended on Form 9327 with a narrative and the verified financial information, approved by the group manager (IRM 5.7.5.4.1). A responsible person with nothing to collect should therefore put a complete financial statement in front of the revenue officer before Letter 1153 issues, not after.
Letter 1153 and the 60 days
IRC 6672(b) requires written notice by mail to the last known address, or in person, at least 60 days before notice and demand for the penalty. That notice is Letter 1153, sent with Form 2751, Proposed Assessment of Trust Fund Recovery Penalty. IRM 5.7.4.7 says the letter is issued only after Form 4183 is approved, must be hand delivered or sent certified mail to the responsible person only within 20 calendar days of approval, and includes Publication 1 and the penalty computation pages. The response period is 60 days, or 75 days if the letter is addressed to a responsible person outside the United States, and the IRS adds five days for receipt and processing of timely mailed protests before issuing notice and demand (IRM 5.7.4.7). Within that period the responsible person can:
| Option | Effect |
|---|---|
| Sign Form 2751 | Agrees to assessment. IRM 5.7.4.7 says a signed Form 2751 is not treated as a conclusive waiver until the 60 or 75-day period plus five days expires, because the person may change their mind; the signature does not extinguish appeal rights. |
| File a protest | Sends the case to the Independent Office of Appeals before assessment. A timely protest also keeps the assessment statute open until 30 days after Appeals' final determination (IRC 6672(b)(3)). |
| Do nothing | The penalty is assessed after the period expires, and a later CDP hearing will generally not reach the liability if the letter was received. Mason v. Commissioner, 132 T.C. 301 (2009), held that a responsible person who did not receive the Letter 1153 had no prior opportunity to dispute the penalty and could contest liability in a CDP hearing, with de novo review in the Tax Court; the same opinion held the assessment itself is valid when the letter was properly mailed but not received. |
The protest is the main pre-assessment remedy. Write it as a full protest on responsibility and willfulness for each quarter, with documents. See Letter 1153, formal protests and the protest template. Declining the Appeals opportunity has consequences later: Treas. Reg. 301.6330-1(e)(3), Example 3, says a TFRP assessee who declines an offered Appeals conference is precluded from challenging the liability in a subsequent CDP hearing.
Assessment statute
For withholding and FICA, IRM 5.7.3.6 gives the usual period as three years from April 15 of the year after the calendar year containing the quarter, or from the date the return was filed if later. If no return was filed, there is no limitation period, and substitutes for return under IRC 6020(b), false or fraudulent returns and filings tied to willful evasion do not start it. The IRS may ask for a statute extension on Form 2750. A properly mailed or delivered Letter 1153 extends the statute to the later of 90 days after mailing or delivery, or 30 days after Appeals' final determination on a timely protest (IRC 6672(b)(3); IRM 5.7.3.7.2).
Payments and designation
Interest on the assessed penalty is governed by IRC 6601(e)(2)(A): because the TFRP is an assessable penalty, interest runs only if it is not paid within 21 calendar days from the date of notice and demand (10 business days if the amount demanded is $100,000 or more), and then only from the notice and demand date to the date of payment. Paying within that window after assessment avoids interest entirely on the penalty, and the business account's interest and penalties are not part of the TFRP in any event.
Voluntary payments by the business can be designated in writing to the trust fund portion; otherwise the IRS applies them in its best interest, generally to non-trust fund periods and liabilities first (IRM 5.7.4.3, citing Rev. Proc. 2002-26). Designation reduces the trust fund balance, which reduces every responsible person's exposure. IRM 5.7.4.4 also lets a responsible person pay the trust fund liability on the business's behalf, with a signed statement that the payment is for the business's trust fund liability for listed periods, rather than have the penalty assessed against them.
Business deposit problems usually start earlier, with the failure-to-deposit penalty and FTD alerts. Clients whose payroll provider failed to remit may have offer options under the ETA provisions for payroll service provider failures.
Contesting the penalty after assessment
- Doubt as to liability offer. A Form 656-L offer on a TFRP goes to a field offer specialist, who reconsiders responsibility and willfulness from the administrative file and any new evidence (IRM 5.8.4.21.4). If Appeals already decided the TFRP, the offer is rejected with appeal rights. See DATL offers.
- Pay a divisible portion, claim, sue. This is the standard route to court once the penalty is assessed. The TFRP is divisible, so the person does not have to pay it all before suing. The Instructions for Form 843 (Rev. 12-2024) state the minimum: to file a refund claim for a TFRP assessment for each tax period, the taxpayer must pay the portion of the penalty attributable to one employee (employment taxes) or one transaction (excise taxes). The claim must be filed before suit (IRC 7422(a)). Under IRC 6532(a)(1), the suit may not be begun before six months have passed from filing the claim unless the IRS decides it sooner, and must be begun within two years after the IRS mails a notice of disallowance by certified or registered mail; a written waiver of the disallowance notice starts the two years on the day it is filed. The suit goes to district court or the Court of Federal Claims, and the government ordinarily counterclaims for the unpaid balance, so the whole penalty is litigated. See refund suits.
- Refund route with a bond (the exception). IRC 6672(c) adds a stay of collection for a person who, within 30 days after notice and demand, pays the minimum amount needed to start a court proceeding, files the refund claim, and posts a bond of 1.5 times the remaining penalty. Levy and collection suits are then barred until the proceeding is resolved, provided suit is begun within 30 days after the claim is denied; the statute expressly preserves the government's counterclaim for the remainder, and IRC 6672(c)(4) suspends the collection statute while the bar is in force. Few responsible persons can post the bond, which is why the ordinary divisible-payment route above is far more common.
- CDP hearing. The liability can be raised only if the person had no prior opportunity to dispute it, which a received Letter 1153 offering an Appeals conference forecloses (Treas. Reg. 301.6330-1(e)(3), Example 3). Mason v. Commissioner, 132 T.C. 301 (2009), is the counterpoint: where the Letter 1153 was never received, the Tax Court held the person had not “otherwise [had] an opportunity to dispute” the penalty and reviewed liability de novo. See CDP hearings.
- Collection alternatives. Installment agreements and doubt as to collectibility offers remain available on the assessed penalty.
Questions practitioners ask
Does the IRS have to assess every officer?
No. The revenue officer must establish responsibility and willfulness for each person. Officer title, stock ownership or check-signing authority alone does not establish responsibility (IRM 5.7.3.4.1.1).
Can the 4180 interview be done by written questionnaire?
No. IRM 5.7.4.2.4 tells revenue officers not to give or mail Form 4180 for completion; it is completed in person or by phone.
Is the penalty dischargeable in bankruptcy?
Generally no. Trust fund taxes are priority taxes under 11 USC 507(a)(8)(C) and excepted from discharge by 11 USC 523(a)(1)(A).
Does paying the business's payroll taxes stop the TFRP?
Paying the trust fund portion in full eliminates the trust fund balance on which the penalty is based. Designate the payment in writing to the trust fund portion; undesignated payments are applied in the government's best interest.
How long after Letter 1153 is the penalty assessed?
Notice and demand cannot be issued until at least 60 days after the letter was mailed or delivered (IRC 6672(b)(2)), except in jeopardy cases. IRM 5.7.4.7 has the IRS wait 60 days (75 if the letter went to an address outside the United States) plus five days for mailed protests.
Does a responsible person have to pay the whole penalty before suing for a refund?
No. The penalty is divisible. The Form 843 instructions require payment of the portion attributable to one employee for one period (one transaction for excise taxes), then a refund claim, then suit under IRC 7422 within the IRC 6532(a) time limits. Expect a government counterclaim for the rest.
Can the IRS decide not to assess because the person cannot pay?
Yes. IRM 5.7.5.4.1 directs nonassertion on Form 9327 when verified financial information shows no present or future collection potential over the collection statute period. Where there is no present but some future ability, the IRS assesses and places the account in CNC.
Does interest run on the TFRP from the original payroll due dates?
No. Under IRC 6601(e)(2)(A) interest on an assessable penalty runs only from notice and demand, and only if the penalty is not paid within 21 calendar days (10 business days for $100,000 or more).