How long do I have to respond to IRS Letter 2801C?

Call within 30 days to ask for reconsideration. Use the deadline printed on your notice and verify how it is calculated. IRS deadlines may run from the notice or mailing date and are not automatically extended because the letter arrived or was opened late.

IRS Letter 2801C: Your Withholding Claim Was Denied

The IRS decided you can't claim exempt status or more than a set number of withholding allowances. Call within 30 days of the letter date if you want it reconsidered.

Numbers covered by this guide

Letter 2801C
Ltr 2801C

Check the identifier and follow the instructions on your own notice.

Published by the Law Offices of Darrin T. Mish, P.A.Updated February 26, 2026

Notice: Letter 2801C / Ltr 2801C
Urgency: Urgent
Deadline: Call within 30 days to ask for reconsideration

Your first move

If you believe you're entitled to more allowances or exempt status, call or write the IRS within 30 days with your W-4, pay stubs, and current return.

What This Letter Means

Letter 2801C goes to employees. The IRS reviewed your withholding and decided you aren't entitled to claim exempt status, or more than a specific number of withholding allowances, on your Form W-4. Your employer normally sets your withholding from your W-4. The IRS can review that and override it.

This is not a penalty and it isn't a bill. It is about how much tax comes out of your paycheck going forward.

What Happens Next

The IRS can issue a "lock-in letter" to your employer. Once that happens, your employer must withhold at the higher rate and must disregard any W-4 you submit that decreases your withholding. You'll get a copy of the lock-in letter, and you'll have some time before it takes effect to send the IRS a new W-4 with a statement explaining why you're entitled to a different rate. After a lock-in, you can't decrease your withholding unless the IRS approves it.

What to Do If You Disagree

Call the number on your letter within 30 days of the letter date. Have this ready, and if you file jointly, have the same for your spouse:

Form W-4 and worksheets, including the Two Earners/Multiple Jobs worksheet if you have more than one job or your spouse works
Your most current pay stubs for all jobs
The number of allowances you and your spouse claim
The Social Security number and date of birth for each dependent you claim
A copy of your current tax return, with all schedules and attachments

You can also write to the address on the letter and ask for a redetermination. Send the same information.

If You Agree

Use the IRS Tax Withholding Estimator to figure the right withholding and give your employer an updated W-4. If you don't give your employer a W-4, your employer must withhold as if you're single with zero allowances.

If you received Letter 2801C and think the IRS got your withholding wrong, call us at (813) 229-7100.

This letter has a clock on it. Don’t run it out alone.

Free consultation with Darrin T. Mish, a Tampa tax attorney licensed since 1993 and admitted to the U.S. Tax Court. Bring the letter.

Call (813) 229-7100

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