You can file your tax return reporting what you think is the correct amount of wages and withholding using Form 4852, the "Substitute for Form W-2," and the IRS will advise you of this option when you reach out to them. You'll have to reference your pay stubs if you use this form.
Note
If Bankruptcy Is the Problem
If your employer has gone bankrupt or is out of business, there might be another way to solve the problem. According to the IRS, it's sometimes possible for an employee to follow up directly with the bankruptcy court in this case. The bankruptcy trustee might be able to provide a corrected W-2 rather than the employee having to use Form 4852.4
W-2 errors aren't limited to income and withholding discrepancies. The spelling of your name, a name change due to marriage or divorce, your address, or your Social Security number (SSN) might be wrong, too, but this is usually a much easier fix.
It should be a simple matter to ask your employer to correct your name or your SSN, although you'll probably have to provide proof of your number.
A simple human or computer error can often be the cause of receiving an incorrect W-2. If handled in a timely fashion by both the employee and employer, the error can be amended and the proper taxpayer information can be delivered to the IRS without fear of penalty.
What if my W-2 has the wrong address?
faux saint laurent bag