A W2 is a tax document your employer sends you showing how much you earned and how much tax was withheld

The W2 form — officially called the "Wage and Tax Statement" — is a record of your income and tax withholdings from a job where you were a regular employee. Your employer is required by law to send you one copy by January 31st each year, and they also send copies to the IRS and your state tax authority. The W2 shows your gross pay (total earnings before deductions), the federal income tax your employer took out of your paychecks, Social Security tax, Medicare tax, and any state or local taxes withheld.

You need the W2 to file your federal and state income tax returns. The IRS already has a copy, so if you file a return, the numbers on your W2 must match what you report. If they don't match, the IRS will notice and contact you. The W2 is also used to verify income when you apply for loans, rental housing, government benefits, or other programs that need proof of how much you earned.

Key Takeaways

  • Your employer must send you a W2 by January 31st showing your total earnings and all taxes withheld during the previous year.
  • The W2 includes federal income tax, Social Security tax, Medicare tax, and state or local taxes — each shown separately on the form.
  • You use the W2 to file your income tax return, and the IRS compares your return to the copy your employer sent them.
  • If you worked for multiple employers in one year, you will receive a separate W2 from each one, and you must report all of them on your tax return.
  • The W2 is also used as proof of income for loans, housing, benefits programs, and other situations where you need to show how much you earned.

The boxes on a W2 and what each one means

A W2 has 14 numbered boxes, and each one reports a different piece of income or tax information. Box 1 shows your taxable wages — the amount you earned that is subject to federal income tax. Box 2 shows the federal income tax your employer withheld from your paychecks. Boxes 3 and 5 show your Social Security wages and the Social Security tax withheld. Boxes 5 and 6 show Medicare wages and Medicare tax withheld.

Boxes 12 and 13 report special types of income or deductions — for example, contributions you made to a 401(k) retirement plan, or tips you received. Box 14 shows state income tax withheld. Your state may also require a separate state W2 form, which looks similar but reports only state taxes. If you worked in more than one state during the year, you may receive multiple state W2s.

The boxes you use most often when filing your tax return are Box 1 (taxable wages), Box 2 (federal tax withheld), and any state tax boxes. If you contributed to a 401(k) or other retirement plan, the amount will appear in Box 12, and that reduces your taxable income. You do not need to understand every box — a tax preparer or tax software will pull the numbers you need from the W2 automatically.

When you should receive your W2 and what to do if it is late

Your employer must send you a W2 by January 31st of the year after you worked. If you left a job during the year, your former employer still has until January 31st to send it. If you do not receive your W2 by early February, contact your employer's payroll or human resources department and ask for it. Most employers send W2s by email or mail in early January, so a delay usually means it was lost in the mail or your address on file is wrong.

If your employer does not send the W2 by mid-February, or if they refuse to send it, you can file a complaint with the IRS. You can also file your tax return without the W2 using your own records of income — paystubs, bank deposits, or 1099 forms if you also had self-employment income — but this creates a mismatch with the IRS records, and you may face delays or requests for more information. The safest approach is to contact your employer again and ask them to send it immediately, or to contact the IRS at 1-800-829-1040 for guidance on how to proceed.

W2 versus 1099: the difference and why it matters

A W2 is for employees; a 1099 form is for independent contractors and self-employed people. If you are an employee, your employer withholds taxes from your paychecks and sends you a W2. If you are a contractor, the person or company that paid you sends you a 1099, and you are responsible for paying your own taxes — usually in quarterly installments. The 1099 shows only the income you received; it does not show any taxes withheld, because none were taken out.

The distinction matters because employees have taxes withheld automatically, while contractors must set aside money for taxes themselves. If you received both a W2 and a 1099 in the same year — for example, you had a regular job and also did freelance work — you report both on your tax return. The W2 income goes on one line, and the 1099 income goes on another. Self-employment income from a 1099 is also subject to self-employment tax (Social Security and Medicare), which is higher than the employee portion because you pay both the employer and employee share.

How to use your W2 to file your tax return

When you file your federal income tax return, you enter the information from Box 1 (taxable wages) on the income section of the form. Tax software and tax preparers will ask you to enter this number, or you can upload an image of your W2 and the software will read it automatically. The federal tax withheld (Box 2) goes into the withholding section, which shows how much tax was already paid on your behalf. At the end of filing, the software calculates whether you owe more tax or will receive a refund based on the difference between your total tax liability and what was withheld.

If you worked in a state with income tax, you will also file a state return using the state tax information from your W2 or state W2 form. Some states use the same W2; others require a separate state form. The process is the same: you report your income and the tax withheld, and the state calculates whether you owe or will receive a refund. If you worked in multiple states, you file a return in each state where you earned income and had taxes withheld.

What to do if your W2 has an error

If your W2 shows the wrong income, wrong tax withholding, or wrong personal information (name, address, or Social Security number), contact your employer immediately and ask them to issue a corrected W2, called a W2-c. Your employer has until February 28th to send corrected forms. Do not file your tax return until you have the corrected W2, because filing with wrong numbers will create a mismatch with the IRS records and trigger a notice or audit.

If your employer refuses to correct the W2 or you cannot reach them, you can file your return using your own records and attach a written explanation of the discrepancy. Include copies of paystubs, bank statements, or other proof of what you actually earned. The IRS will compare your return to the W2 on file and may contact you for clarification. Having documentation of the error protects you if the IRS questions the difference.

W2 information you may need for other purposes

Beyond tax filing, you will often need to show your W2 or provide information from it when you apply for a mortgage, car loan, rental housing, or government benefits. Lenders and landlords use the W2 to verify your income and assess whether you can afford the loan or rent. Government benefit programs use it to confirm your earnings fall within their income limits. In these situations, you may be asked to provide a copy of your W2, or you may be asked to sign a form that lets the organization contact the IRS or your employer directly to verify the information.

Keep copies of your W2s for at least three years, and longer if possible. The IRS can audit tax returns going back three years as a standard practice, and up to six years if they suspect underreporting of income. If you need to prove past income — for example, when refinancing a loan or applying for benefits years later — having your W2s on file makes the process faster and easier.

Frequently Asked Questions

Do I need to keep my W2 after I file my tax return?

Yes. Keep your W2 for at least three years in case the IRS has questions about your return. The IRS can audit returns going back three years as standard, and longer if they suspect an error. You may also need your W2 later to prove past income for loans, housing, or benefits.

What if I worked for the same employer for only part of the year?

Your employer still sends you a W2 showing only the income and taxes from the time you worked there. If you worked for multiple employers in the same year, you receive a separate W2 from each one. You report all of them on your tax return by adding up the income and withholding from each W2.

Can I file my tax return before I receive my W2?

You can file early using an estimate of your income based on paystubs, but the IRS will compare your return to the W2 your employer sends them. If the numbers don't match, the IRS will send you a notice. It is safer to wait for your W2 and file with the actual numbers to avoid delays or corrections.

What happens if my employer never sends me a W2?

Contact your employer's payroll department and request it. If they do not respond by mid-February, you can file a complaint with the IRS or contact them at 1-800-829-1040. You can file your return using your own records, but document everything with paystubs or bank statements to support the income you report.

Is the W2 the same as my pay stub?

No. A pay stub shows your income and deductions for a single paycheck. A W2 is an annual summary showing your total income and all taxes withheld for the entire year. You receive a pay stub with each paycheck; you receive a W2 once per year by January 31st.