How to Fix W-2 Errors: The W-2C Process

If your W-2 contains errors, contact your employer and request a corrected Form W-2C. The employer is required to issue a W-2C when any box contains an incorrect amount. Do not file your return with a known incorrect W-2. This article walks through the most common errors, how to get them fixed, and what to do when your employer will not cooperate.

Common W-2 errors

W-2 errors range from simple typos to miscalculated wage amounts. For 2026, the introduction of Box 12 codes TP and TT adds new categories of potential mistakes. Here are the most common errors:

Wrong Social Security number

A transposed digit or a number from a prior employee record can cause your W-2 to have the wrong SSN. This is a critical error because the SSA uses the SSN to credit your lifetime earnings. File a correction request immediately.

Incorrect Box 1 wages

Box 1 errors usually stem from incorrect pre-tax deduction calculations, missed payroll adjustments, or failure to include taxable fringe benefits. Compare Box 1 against your pay stubs after adjusting for pre-tax deductions and imputed income (see our W-2 vs Last Pay Stub guide for how to reconcile these).

Missing Box 12 codes TP and TT

For 2026, employers must report qualified tips under Code TP and qualified overtime premium under Code TT. If you earned tips in a customarily tipped occupation or overtime as a non-exempt employee and these codes are absent, your W-2 is incomplete. Without Code TP, you cannot properly claim the tips deduction (up to $25,000). Without Code TT, you cannot claim the overtime deduction (up to $12,500 for single filers).

Wrong withholding amounts

Box 2 (federal income tax withheld) should match the sum of federal tax deducted from all your paychecks during the year. If it does not, your employer may have applied the wrong W-4 elections or processed a payroll correction incorrectly. Box 4 (Social Security tax) and Box 6 (Medicare tax) errors are less common but do occur.

Wrong name or address

A misspelled name can cause problems with SSA earnings records and IRS matching. An incorrect address delays delivery of future correspondence. Both should be corrected via W-2C.

How to request a W-2C from your employer

Follow these steps to request a correction:

1. Identify the specific error. Note which box is wrong, what the W-2 shows, and what the correct amount should be. Gather supporting documentation: pay stubs, tip records (Form 4070), time sheets, and benefit enrollment confirmations.
2. Contact payroll in writing. Send an email or letter to your employer's payroll or HR department. Specify the box number, the incorrect value, and the correct value. Attach your supporting documents.
3. Follow up. If you do not hear back within two weeks, follow up. Keep a record of all communications.
4. Receive the W-2C. Your employer will issue Form W-2C, which shows the original and corrected amounts side by side. They also file Copy A with the SSA. Use the corrected figures when filing your return.

If you have already filed your return before receiving the W-2C, file an amended return (Form 1040-X) using the corrected figures.

What if your employer refuses?

If your employer ignores your request or refuses to issue a W-2C, you have recourse through the IRS:

1. Call the IRS. Contact the IRS at 800-829-1040. Explain the situation and provide your employer's name, address, and EIN. The IRS will send a letter to your employer instructing them to issue a corrected W-2C.
2. File a complaint. If the employer still does not comply, the IRS may assess penalties under IRC section 6721 for filing incorrect information returns.
3. Use Form 4852. As a last resort, file your return using Form 4852 (Substitute for Form W-2) with the correct figures based on your records. See the next section for details.

Filing Form 4852 as a substitute W-2

Form 4852 is a substitute wage statement you can use when you cannot obtain a correct W-2 or W-2C from your employer. Here is how to complete it:

1. Enter your personal information and your employer's name, address, and EIN.
2. Fill in the wage and withholding amounts based on your best available records (final pay stub, bank deposit records, prior correspondence).
3. In the explanation section, describe your efforts to obtain a correct W-2 and why you are using a substitute form.
4. For 2026 OBBBA deductions, include your qualified tips and overtime premium amounts based on your pay stubs and tip records if the missing W-2 would have included codes TP and TT.
5. Attach Form 4852 to your return in place of the missing or incorrect W-2.

Be aware that filing with Form 4852 may delay the processing of your return. The IRS may request additional documentation to verify the amounts you reported.

Deadline to correct

There is no statutory deadline for employers to issue a W-2C. An employer can (and should) issue corrections whenever an error is discovered, even years later. However, you as the taxpayer still need to file your return on time.

If you are waiting for a W-2C and the April 15, 2027 filing deadline is approaching, either file with Form 4852 using the correct figures or file Form 4868 for an automatic six-month extension (through October 15, 2027). Remember that Form 4868 extends only the filing deadline, not the payment deadline. Estimate your tax liability and pay any amount owed by April 15 to avoid interest.

If you receive a W-2C after filing your return and it changes your tax liability, file Form 1040-X (amended return) to correct the difference. You generally have three years from the original filing date to amend.

Use our Federal Income Tax Calculator to estimate the impact of corrected wages on your tax bill, or the No Tax on Tips Calculator to see how adding Code TP affects your deduction.