The following article was published by the IRS.

laptopMost taxpayers got their Form W-2, Wage and Tax Statement, by the end of January. Taxpayers need their W-2s to file an accurate tax returns, as the form shows an employee’s income and taxes withheld for the year.

Taxpayers who haven’t received their W-2 by the end of February should:

Contact their Employer. Taxpayers should ask their current or former employer for a copy of their W-2. Be sure the employer has the correct address.

Call the IRS. Taxpayers who are unable to get a copy from their employer by the end of February may call the IRS at 1-800-829-1040 for a substitute W-2. The IRS will send a letter to the employer on taxpayers’ behalf. When they call, taxpayers need their:

  • Name, address, Social Security number and phone number.
  • Employer’s name, address and phone number.
  • Employment dates.
  • Estimate of wages and federal income tax withheld in 2017. Use a final pay stub for these amounts.

File on Time. Taxpayers should file their tax return by April 17, 2018. If they still haven’t received their W-2, they should use Form 4852, Substitute for Form W-2, Wage and Tax Statement. They should estimate their wages and taxes withheld as best as possible. To request more time to file, they should use Form 4868, Application for Automatic Extension of Time to File. Taxpayers should remember that an extension of time to file isn’t an extension of time to pay taxes owed. Taxpayers can also get an extension by paying all or part of their estimated income tax due, and indicate that the payment is for an extension using Direct Pay, the Electronic Federal Tax Payment System, or a credit or debit card. This way, the taxpayer won’t have to file a separate extension form and will receive a confirmation number for their records.

Correct a Tax Return, if Necessary. Taxpayers may need to correct their tax return. This could happen if they get a missing W-2 after they file. If the tax information on the W-2 is different from what they first reported, they may need to file an amended tax return. Use Form 1040X, Amended U.S. Individual Income Tax Return, to make the change.

All taxpayers should keep a copy of their tax return. Taxpayers using a software product for the first time may need their Adjusted Gross Income from last year’s tax return to verify their identity. Taxpayers can learn more about how to verify their identity and electronically sign tax returns at Validating Your Electronically Filed Tax Return.