Which claims are affected
The bar applies only to ERC claims for the third and fourth quarters of 2021 that were filed after January 31, 2024. A claim counts as timely if it was properly mailed with a postmark, or submitted, by that date. Claims for other quarters, and Q3 or Q4 2021 claims filed on time, are not limited by this provision.
From July 4, 2025, the IRS cannot allow or refund a barred claim. If a late claim was already paid or credited before that date, this provision does not claw it back, though other compliance work may still lead to an adjustment.