Why Timing Is the Hidden Risk in the ERC
Most discussion of the Employee Retention Credit focuses on eligibility—the government-order test and the gross-receipts decline. But for businesses that have already claimed the credit, or are deciding whether to, the more urgent risk is often timing. The ERC operates within a lattice of limitation periods that determine how long the IRS can assess additional tax or claw back a credit, and how long a taxpayer has to pursue a refund. Practitioners refer loosely to a "two-year trap," and while the precise periods vary by claim and quarter, the underlying lesson is constant: delay is dangerous in both directions.
As counsel, I treat the limitation analysis as the first structural question in any ERC matter, before diving into the substantive eligibility facts.
Two Different Clocks
It is essential to distinguish between two categories of time limits that pull in opposite directions.
The first is the assessment period—the window during which the IRS may examine a claim and assess additional employment tax, including recovering an ERC it concludes was improperly paid. The length of that window depends on the specific quarter and the applicable rules, and for certain ERC periods the assessment window is extended beyond the ordinary employment-tax norm. The practical implication is that a business cannot assume that receipt of a refund means the matter is closed; the IRS retains authority to revisit the claim for a defined period.
The second is the refund or credit period—the window within which a taxpayer must act to claim or protect a refund. For a business that believes it was eligible but has not yet been paid, or that received a disallowance, the deadline to preserve the claim through appeal or suit is a hard limit.
Because one clock protects the government's ability to claw back and the other protects the taxpayer's ability to recover, a business must track both simultaneously.
The Clawback Exposure
Many businesses received ERC refunds relatively quickly and treated the funds as settled. That is a mistake. So long as the assessment period remains open, the IRS can examine the claim and, if it finds ineligibility, assess to recover the credit—potentially with penalties and interest. Businesses that spent the refund without reserving for this contingency can find themselves facing a demand for repayment years later, with no set-aside funds and diminished records.
Proper planning means: preserving the eligibility documentation for the full assessment period, understanding when that period closes for each quarter, and, for claims where eligibility is uncertain, maintaining a realistic reserve against potential clawback.
The Refund-Side Trap
On the other side, businesses with legitimate but unpaid or disallowed claims face the opposite risk—losing the right to recover simply by waiting. A disallowance starts a limited window to pursue administrative appeal or litigation. Businesses that deliberate too long, or assume they can revisit the issue indefinitely, may find the door has closed. Here, delay forfeits a valid claim.
Amended Returns and Interaction Effects
The ERC frequently required amended employment tax returns, and in many cases businesses were required to reduce wage deductions on their income tax returns to reflect the credit. This creates interaction effects across return types and years. If an ERC claim is later disallowed or clawed back, the corresponding income tax treatment may need to be revisited, and the limitation periods governing those income tax adjustments are not necessarily the same as those governing the employment tax claim. Coordinating these moving parts is where timing errors compound.
A Framework for Managing the Trap
For any business with an ERC position, I recommend a structured timing analysis:
- Map every relevant period by quarter. Identify, for each ERC quarter, when the IRS's assessment window closes and, for unpaid or disallowed claims, when your action deadline falls.
- Preserve documentation for the full assessment window. Do not discard eligibility records on the assumption that a received refund is final.
- Reserve for clawback risk where eligibility is uncertain. Treat questionable refunds as contingent, not free, cash.
- Act promptly on disallowances. Do not let refund-side deadlines lapse during deliberation.
- Coordinate employment and income tax positions. Ensure that any change on one return is reflected consistently on the other, within the applicable periods.
The Bottom Line
The ERC's overlapping limitation periods reward businesses that plan and punish those that assume time is on their side. Whether your exposure is a potential clawback of a paid claim or the loss of an unpaid one, the antidote is the same: identify every applicable deadline early, preserve your records, and act within the windows the law provides. In ERC matters, timing is not a technicality—it is often the whole case.
This article is provided for general informational purposes and does not constitute legal advice or create an attorney-client relationship.