Don't file with an incorrect W-2

The IRS receives a copy of your W-2 from your employer. When you file your tax return, the IRS automatically matches the numbers on your return to the numbers on the W-2 they received. If they don't match, you'll get a notice — sometimes months or years later.

If your W-2 has any error, get it corrected before filing. The corrected version is called a W-2c (Corrected Wage and Tax Statement).

Common W-2 errors

Misspelled name — must match your Social Security card exactly
Wrong SSN — biggest red flag; must be corrected before filing
Wages don't match your final pay stub — could be a calculation error or could reflect pre-tax deductions you forgot about
Federal withholding looks too low or high — check against your last pay stub's YTD withholding
Wrong filing year — rare but happens; should match the calendar year you worked
Box 12 codes look wrong — could affect your eligibility for certain credits

Step-by-step: how to get a W-2c

Step 1: Verify it's actually wrong. Compare your W-2 to your final pay stub of the year. Remember that Box 1 (taxable wages) is usually less than gross wages because pre-tax deductions like 401(k) and health insurance reduce it. So Box 1 won't match gross pay — that's normal.

Step 2: Contact your employer immediately. Call HR or payroll. Explain what's wrong and provide documentation (final pay stub, Social Security card copy if it's an SSN issue).

Step 3: Request a W-2c. Your employer must issue a corrected W-2 (Form W-2c) and file the correction with the IRS and SSA. Most employers can do this within a few weeks.

Step 4: File with the corrected W-2. Use the W-2c amounts on your tax return.

What if your employer won't fix it?

If your employer refuses to issue a W-2c, contact the IRS at 1-800-829-1040 after February 14. They'll contact your employer on your behalf. You can also file Form 4852 (Substitute for W-2) with corrected amounts and an explanation.

What if the deadline is approaching?

If tax day is close and you still don't have a corrected W-2, you have two options:

File for an extension using Form 4868 — gives you until October 15. (Note: extensions to file are not extensions to pay. If you owe tax, pay an estimate by April 15 to avoid penalties.)
File using Form 4852 with your best estimate — and amend later (Form 1040-X) if the corrected W-2 differs.

Already filed? File an amended return

If you already filed using the incorrect W-2, file an amended return (Form 1040-X) once you receive the corrected W-2c. Most tax software can handle this. The IRS allows up to 3 years from the filing deadline to file amendments.

Wrong Information on Your W-2? Here's How to Fix It