A small business gets behind on its employment tax deposits. Maybe cash got tight. Maybe payroll was outsourced to a vendor who pocketed the trust-fund taxes instead of remitting them. Maybe the books were a mess. Six months later, the company owes $80,000 in past-due 941 taxes. Eighteen months later, the company is closed, the assets are gone — and the IRS sends a letter to the owner personally proposing $48,000 in personal liability.
This is the Trust Fund Recovery Penalty (TFRP) under IRC § 6672. It is the rare tax statute that pierces corporate liability protection by design, and it is one of the IRS's most-used collection tools against small-business owners. It is also one of the most-defendable assessments in the IRS playbook, when the case is built carefully and started early.
What is the trust-fund portion?
Federal employment tax (the IRS Form 941 quarterly return) consists of two pieces:
- The "trust fund" portion — federal income tax withholding and the employee's share of FICA (Social Security and Medicare) — that the employer withheld from employee paychecks and is holding in trust for the employees and the government
- The employer's matching share of FICA, which is the employer's own tax
The trust-fund portion is the employer's money to remit, not their money to keep. When an employer fails to remit the trust-fund portion, the government treats it as if the employer stole money from employees and kept it. That is the conceptual basis for the personal-liability provision.
The two elements: responsibility and willfulness
The IRS imposes the TFRP on a person who is (1) "responsible" for collecting, accounting for, and paying over the trust-fund taxes, and who (2) "willfully" fails to do so. Both elements must be met. The defense usually focuses on one or the other.
Responsibility — IRC § 6671(b) and § 6672(a)
Responsibility is determined by who has effective control over which bills get paid, not by formal title. Common factors:
- Authority to sign company checks
- Authority to direct payroll
- Authority to hire, fire, and set employees' compensation
- Authority to make decisions about which bills to pay when funds are tight
- Active management of company finances
- Officer or director status
Multiple people can be "responsible" for the same liability. The IRS often proposes TFRP against the owner, the CFO, the controller, and any officer who signed checks. The IRS typically prevails against people who exercised real control and rarely prevails against people who held titles without actual financial authority.
Willfulness
Willfulness for TFRP purposes is broader than common usage. It does not require intent to defraud the government. It requires only that the responsible person knew or should have known of the unpaid taxes and chose to pay other creditors instead. This is a low bar, and the IRS often clears it easily.
Defenses to willfulness:
- Lack of knowledge of the unpaid taxes (rarely successful for owners; sometimes successful for newly-arrived officers)
- Reliance on a payroll vendor or accountant who was actually pocketing the funds (potential defense if reliance was reasonable)
- No funds available to pay the taxes during the relevant period (must show that no other creditors were paid, including ordinary operating expenses)
- Acts of theft or embezzlement that depleted funds without the responsible person's knowledge
The "no funds available" defense is the most common attempt and the most often misunderstood. It is not enough to show the company was struggling. The defense requires showing that during the period when the trust-fund taxes were unpaid, the company paid no creditors at all — not vendors, not landlords, not other employees. Most failing businesses pay some creditors and not others, which generally satisfies the willfulness element against the owner.
The IRS process — how the case develops
The TFRP process follows a sequence of letters and meetings.
TFRP timeline
- 1. The company falls behind on Form 941 employment tax deposits
- 2. IRS Revenue Officer assigned to the case investigates company-level liability
- 3. Form 4180 interview — the Revenue Officer interviews the proposed responsible parties to determine responsibility and willfulness. THIS IS A CRITICAL JUNCTURE.
- 4. Letter 1153 — IRS proposes TFRP assessment against the individual(s); 60 days to file a written protest
- 5. Appeals review (if protest filed) — independent review by the IRS Office of Appeals
- 6. Final assessment — TFRP becomes a personal tax liability of the responsible person(s)
- 7. Refund suit (if assessed and paid) — option to pay a portion and sue for refund in district court or Court of Federal Claims
The Form 4180 interview is the moment most TFRP cases are won or lost. The Revenue Officer asks specific questions designed to establish each element of liability. Answers given without preparation often lock in adverse positions that cannot be walked back later. Going to the Form 4180 interview without representation, particularly when significant exposure is at stake, is a frequent mistake.
How the assessment is calculated
The TFRP equals 100% of the trust-fund portion of unpaid employment taxes — federal withholding plus the employee share of FICA. It does not include the employer-matching FICA share, late-payment penalties on the company-level liability, or interest charged at the company level.
For a company with $80,000 in unpaid 941 taxes, the trust-fund portion is approximately $48,000 (rough split — the actual percentage depends on wage levels and withholding rates). That is the maximum TFRP the IRS can impose on the responsible parties combined.
Joint and several liability — and the cross-payment provision
When multiple people are determined responsible, each is jointly and severally liable for the full TFRP amount — not their share of it. The IRS can collect 100% from any one responsible person, leaving that person to pursue contribution from the others. IRC § 6672(d) creates a federal right of contribution among responsible parties, but the practical reality is that the deepest pocket among the responsibles is the one who pays.
The cross-payment provision under IRC § 6672(d) does mean that payments by one responsible party reduce the liability of the others — so settling the TFRP for one principal can reduce or eliminate the exposure of the others. This is a coordinated negotiation when multiple responsibles are involved.
Defending the case — the protest letter
After the Letter 1153 arrives, the responsible person has 60 days to file a written protest. The protest should:
- Identify the specific tax periods and assessment amounts being contested
- State the legal grounds (responsibility, willfulness, calculation, both)
- Provide factual evidence supporting the defense
- Identify the responsible person's actual role in the company during the periods at issue
- Where applicable, identify other persons whom the IRS should be considering as responsible
- Request a conference with IRS Appeals
The protest is a critical written submission that often determines whether the case settles favorably at the Appeals level or escalates further. Generic protests are rejected. Specific, well-supported protests routinely produce favorable settlements.
When to call
TFRP cases reward early engagement. The right times to call:
- When the company first falls behind on Form 941 taxes — early intervention can avoid TFRP exposure entirely
- When the company receives a letter from a Revenue Officer asking to schedule a Form 4180 interview
- When you personally receive a Letter 1153 proposing TFRP assessment
- When you have been assessed and the IRS is initiating collection (levy, lien, garnishment)
The earlier the engagement, the more options remain. Once a TFRP is assessed and the appeal periods have expired, the case is in pure collection territory — installment agreements, offers in compromise, financial-hardship status. Those are still viable, but they are downstream of the much-better outcomes that are available earlier in the process.
If you are an Atlanta business owner facing 941 problems or a TFRP proposal, the consultation is free. We have handled this work directly through PwC and now in private practice — and we know the difference between a TFRP that should be settled, contested, or strategically negotiated.