Is There a Deadline for Filing Form 941-X?

Generally, you may correct overreported taxes on a previously filed Form 941 if you file Form 941-X within 3 years of the date Form 941 was filed or 2 years from the date you paid the tax reported on Form 941, whichever is later. You may correct underreported taxes on a previously filed Form 941 if you file Form 941-X within 3 years of the date the Form 941 was filed. We call each of these time frames a period of limitations. For purposes of the period of limitations, Forms 941 for a calendar year are considered filed on April 15 of the succeeding year if filed before that date.

Example. You filed your 2023 fourth quarter Form 941 on January 25, 2024, and payments were timely made. The IRS treats the return as if it were filed on April 15, 2024. On January 29, 2027, you discover that you overreported social security and Medicare wages on that form by $350. To correct the error, you must file Form 941-X by April 15, 2027, which is the end of the period of limitations for Form 941, and use the claim process.

Caution: If you file Form 941-X to correct overreported tax amounts in the last 90 days of a period of limitations, you must use the claim process. You can’t use the adjustment process. If you’re also correcting underreported tax amounts, you must file another Form 941-X to correct the underreported tax amounts using the adjustment process and pay any tax due.