Every January or early February, employers are required to send their employees a W-2 form. If you’ve just entered the workforce, this piece of paper — or email — might look confusing at first. It’s not. Here’s everything you need to know about your W-2, explained in plain English.
What is a W-2 form?
A W-2 (officially called the “Wage and Tax Statement”) is a document your employer sends you at the end of each year that summarizes your earnings and tax withholdings. It tells you — and the government — how much you earned and how much was already taken out of your paychecks for federal taxes, state taxes, and other purposes like Social Security and Medicare.
You need your W-2 to file your tax return. Without it, you can’t accurately complete your taxes.
When does it arrive?
Employers are legally required to send W-2s by January 31st each year, covering earnings from the previous calendar year. So your W-2 for the year you worked in 2025 will arrive by January 31, 2026.
Some employers deliver it electronically through an HR portal. Others mail it to your address on file. If January 31st passes and you haven’t received yours, contact your employer’s HR or payroll department immediately.
The boxes on your W-2 — what they actually mean
There are a lot of boxes on a W-2. Most of them won’t apply to you. Here are the ones that matter most for a first-time worker:
- Box 1 — Wages, tips, other compensation. This is your total taxable income for the year. It’s the number your tax return is built around.
- Box 2 — Federal income tax withheld. How much your employer already sent to the IRS on your behalf throughout the year. If this is higher than what you actually owe, you get a refund. If it’s lower, you owe the difference.
- Box 3 — Social Security wages. Your earnings subject to Social Security tax.
- Box 4 — Social Security tax withheld. The amount taken out for Social Security (currently 6.2% of your wages).
- Box 5 — Medicare wages. Your earnings subject to Medicare tax.
- Box 6 — Medicare tax withheld. The amount taken for Medicare (currently 1.45%).
- Box 12 — Various codes. Could include things like 401k contributions (code D) or other benefits. Your tax software will walk you through these.
- Box 15–17 — State information. Similar to the federal boxes but for your state taxes — state employer ID, state wages, and state income tax withheld.
Why your W-2 wages might be less than what you actually earned
This confuses a lot of first-time workers. Your Box 1 wages can be lower than your total pay if you contributed to a pre-tax 401k, flexible spending account, or health insurance premiums through work. These contributions are deducted before taxes, which reduces your taxable income — which is actually a benefit, not an error.
What to do with your W-2
When you file your tax return — online using free software like IRS Free File, FreeTaxUSA, or through your state’s filing portal — you’ll enter the numbers from your W-2. Most tax software walks you through it box by box. It takes about 10 minutes for a simple return.
Keep a copy of your W-2 for at least three years after you file. The IRS can audit returns going back that far, and you’ll need the documentation.
What if you have more than one W-2?
If you worked multiple jobs in the same year, you’ll get a W-2 from each employer. You need to report all of them when you file. Enter each one separately — your tax software will add them up correctly.
W-2 vs 1099 — what’s the difference?
If you did freelance, gig, or contract work, you may receive a 1099 form instead of (or in addition to) a W-2. The key difference: with a W-2, your employer withheld taxes for you. With a 1099, no taxes were withheld — meaning you may owe self-employment tax on that income. If you have both, report both.