Learn/Income & Career
Income & CareerBeginner5 min read

What is a W-2 form? A beginner's guide

The tax form your employer sends you every January, what each box means, and why you need it to file your taxes.

If you're an employee, sometime in January or early February your employer will send you a form called a W-2. It's a one-page summary of how much you earned last year and how much was withheld for taxes. You'll need it to file your tax return. If you've never seen one, the boxes and codes can look intimidating — but a W-2 is really just a receipt for your working year, and this guide walks through the parts that matter.

One sentence version
A W-2 reports your total wages and the taxes already taken out of them, so you (and the government) can settle up at tax time.

W-2 vs. W-4 — don't mix them up

  • A W-4 is what you fill out when you start a job to tell your employer how much tax to withhold. You complete it.
  • A W-2 is what your employer gives you after the year ends, summarizing what actually happened. They complete it.
  • Easy memory aid: you write the W-4 (fourth), and you receive the W-2 (too/two) later.

The boxes you'll actually look at

BoxWhat it shows
Box 1Your total taxable wages for the year
Box 2Federal income tax already withheld
Boxes 3–6Wages and taxes for Social Security and Medicare
Box 12Special items with codes, like 401(k) contributions
Boxes 15–17State wages and state income tax withheld
The most-used W-2 boxes
Why Box 1 may be smaller than your salary
Pre-tax deductions like a traditional 401(k) or health premiums lower your taxable wages, so Box 1 can be less than the salary you were paid. That's normal — it means those deductions did their job.

What to do when your W-2 arrives

  1. 1
    Check your name and Social Security number

    Make sure they're correct. An error here can delay your tax return.

  2. 2
    Compare it to your last pay stub

    Your final pay stub of the year should roughly match the wages and withholding on the W-2.

  3. 3
    Keep it with your tax records

    You'll enter its numbers when you file, and it's worth keeping for several years.

Missing or wrong W-2?
If you don't receive your W-2 by early February, contact your employer. If a number looks wrong, ask them for a corrected form (called a W-2c). For questions about how to report anything unusual, a tax professional can help.

The bottom line

A W-2 is your employer's year-end summary of your pay and the taxes withheld from it — the document that lets you file your return and find out whether you overpaid (refund) or underpaid (a bill). Check that your details are right, keep it safe, and remember: you fill out the W-4 when you're hired, and you receive the W-2 after the year ends.

Check your understanding

1 of 3
When should you expect to receive your W-2?

Not quite — try again.

The Worth letter

Get smarter about money every week

One email, no spam — practical guides and Worth updates. Unsubscribe anytime.

Put this into practice

Worth tracks your accounts, budgets, and goals — so the concepts in this article aren't just theory.

Start free trial