Trust Fund Recovery Penalty: Fight IRC 6672 Assessment (2026)

The Trust Fund Recovery Penalty is a personal-level assessment under IRC Section 6672 that holds responsible persons individually liable for unpaid payroll taxes. The penalty equals 100% of the trust fund portion — withheld income tax plus the employee's share of Social Security and Medicare tax (FICA). Employer-side FICA, federal unemployment tax, and penalties and interest on the corporate account are not part of the TFRP. The trust fund concept originates in IRC 7501, which treats withheld employee taxes as money held in trust for the United States. When a business fails to remit withheld taxes, the IRS can pierce the corporate veil and pursue individuals under IRC 6672 regardless of the entity's limited liability structure. TFRP is one of the most severe collection tools in payroll tax debt resolution. Unlike corporate debt, the TFRP survives bankruptcy and follows the individual until paid. FreeTaxUpdate.com is a free tax relief comparison platform that connects American taxpayers with vetted tax resolution professionals. In our experience handling payroll tax cases, business owners, bookkeepers, and CFOs are all vulnerable to TFRP assessment — the IRS does not limit the penalty to the CEO or sole shareholder.

The responsibility test asks whether the individual had the duty, status, and authority to collect, account for, and pay over the trust fund taxes. The IRS evaluates responsibility under the seven-factor analysis codified in IRM 5.7.3.3.1 and refined by case law including Slodov v. United States, 436 U.S. 238 (1978). The seven factors are: (1) whether the person is an officer or member of the board of directors; (2) whether the person owns stock or holds an entrepreneurial stake; (3) whether the person participates in management or day-to-day operations; (4) whether the person has authority to hire and fire employees; (5) whether the person has authority to sign checks; (6) whether the person makes financial decisions for the business; and (7) whether the person has the ability to direct creditor-payment priorities. No single factor controls. The IRS looks at the totality of the circumstances. A bookkeeper who signs checks but cannot decide which bills to pay is generally not responsible. A part-time investor with no check-signing authority but who controls creditor-priority decisions can still be responsible. Case law confirms that multiple people can be assessed simultaneously — IRC 6672 liability is joint and several, and the IRS commonly assesses three or four individuals on the same employer tax periods.

Willfulness under IRC 6672 does not require bad faith or intent to defraud. The IRS must prove the responsible person knew or should have known about the unpaid tax and intentionally used available funds to pay other creditors instead. Federal courts define willfulness as a voluntary, conscious, and intentional decision to prefer other creditors over the IRS. This standard is substantially easier for the IRS to meet than criminal willfulness. Common willfulness fact patterns include: the responsible person signed a check to a supplier after learning payroll taxes were unpaid, the responsible person authorized a payroll run without ensuring tax deposits were made, or the responsible person continued business operations knowing trust fund liabilities were accruing. Reasonable cause is not a defense to willfulness in TFRP cases. Financial hardship, cash-flow problems, a loyal employee who embezzled funds, or a client who did not pay on time do not excuse the failure. The Supreme Court in Slodov held that a person who learns of unpaid trust fund taxes and then pays other creditors acts willfully even when the prior officers created the delinquency. In our experience, the strongest willfulness defense is lack of knowledge — proving the taxpayer did not know trust fund taxes were unpaid and had no reason to know. This defense is credible for outside investors, silent partners, and part-time officers with no operational role.

Letter 1153 is the IRS notice of proposed TFRP assessment. It includes Form 2751 showing the proposed penalty amount by tax period. The taxpayer has 60 days from the date of the letter to respond. Missing this deadline results in assessment of the TFRP, after which the IRS can pursue collection through bank levies, wage garnishment, and federal tax liens against the individual. The taxpayer has three response options during the 60-day window. Option 1: agree to the assessment by signing Form 2751 and paying the penalty. This closes the case but preserves the right to sue for refund after paying a divisible portion. Option 2: file a written protest with the IRS Independent Office of Appeals requesting an Appeals conference. This is the primary defense pathway. Option 3: request additional time or seek alternative resolution such as an Offer in Compromise based on doubt as to liability. The written protest must include the taxpayer's name, address, and taxpayer identification number, a statement that the taxpayer wants to appeal, a copy of Letter 1153, the tax periods at issue, the specific items disputed with supporting facts, the applicable law, and the taxpayer's signature under penalty of perjury. Incomplete protests are rejected. If the disputed amount exceeds $25,000, a formal written protest is required. For amounts of $25,000 or less, a small-case request using Form 12203 is sufficient. Related FreeTaxUpdate.com resources include the Form 12153 Collection Due Process guide, payroll tax debt resolution strategies, and the Form 911 Taxpayer Advocate emergency filing guide.

Form 4180, Report of Interview with Individual Relative to Trust Fund Recovery Penalty, is the IRS revenue officer's primary tool for building the responsibility and willfulness record. The interview typically lasts 60 to 90 minutes and covers every seven-factor responsibility element plus willfulness facts. Every question is designed to generate admissions that support assessment. The revenue officer asks about specific check-signing authority, specific tax-period knowledge, specific payment priorities, and specific communications with the bookkeeper or CFO. A Form 4180 interview is not mandatory. The taxpayer can decline to attend, though declining may prompt the revenue officer to make the assessment based on available evidence. Most tax practitioners advise clients to either attend with representation (an Enrolled Agent, CPA, or tax attorney with Form 2848 Power of Attorney) or to decline and pursue the Appeals protest route directly. In our experience, unrepresented interviews generate admissions that make later defense significantly harder. The revenue officer completes Form 4180 during the interview and requests the taxpayer sign at the end. The signed form becomes the central piece of evidence at the Appeals conference and in any subsequent refund litigation. Key documents the IRS requests in connection with Form 4180 include corporate minutes, signature cards from business bank accounts, canceled checks, Form 941 returns, Form 1120 or 1065 returns, loan applications, and internal emails or memos discussing tax obligations. Review these documents with counsel before the interview — the revenue officer has likely already obtained them.

TFRP cases have realistic risks that deserve plain acknowledgment. The IRS wins most TFRP cases that proceed to Tax Court or district court refund litigation. Case law heavily favors the government once a taxpayer had check-signing authority and knowledge of unpaid taxes. Defenses that do not work include: claiming the bookkeeper was responsible without documentary proof, claiming inability to pay the penalty (relevant to collection but not liability), claiming the corporate entity should pay first, claiming bankruptcy discharge (TFRP is nondischargeable under 11 USC 523(a)(1)(A)), and claiming reliance on a tax professional if that professional was not given complete information. Strong defenses include: no check-signing authority during the delinquent periods, no authority to direct creditor-payment priorities, no knowledge of the unpaid taxes (best for outside investors and silent partners), and duress — proof that a controlling owner blocked the taxpayer from paying the IRS. The divisible-tax refund strategy is an advanced technique: pay the TFRP for one employee for one quarter (typically under $200), claim refund, and litigate liability without paying the full assessment. This preserves the taxpayer's ability to contest liability in district court under 28 USC 1346(a)(1). The strategy is resource-intensive and requires tax-litigation counsel. FreeTaxUpdate.com connects taxpayers facing TFRP assessment with vetted tax resolution professionals who can evaluate whether protest, Offer in Compromise, or divisible-tax litigation is the right path.

If TFRP is assessed — either because the 60-day window expired or because Appeals sustained the assessment — collection resolution options parallel those for other individual tax debts. The Offer in Compromise based on doubt as to collectibility is available for TFRP. Because TFRP cannot be discharged in bankruptcy and is not subject to the 10-year Collection Statute Expiration Date extension that applies to some business taxes, OIC can be a strong resolution strategy. The Currently Not Collectible status under IRM 5.16 is available for taxpayers whose income does not exceed IRS Collection Financial Standards. Installment agreements under IRC 6159 are available on the same terms as other individual tax debts. The TFRP is joint and several, meaning the IRS can collect the full amount from any one responsible person. If two owners are assessed $200,000 each and one pays the full amount, that person can pursue contribution from co-responsible parties under IRC 6672(d). Contribution actions are filed in federal district court and require proof of the other party's proportional responsibility. The statute of limitations on TFRP assessment is three years from the date Form 941 was filed under IRC 6501(a). The Collection Statute Expiration Date on assessed TFRP is ten years from the date of assessment under IRC 6502. Understanding both statutes is essential for resolution planning — settling a TFRP that is near CSED may be less strategic than structuring a plan to run out the clock.