Written by the TaxPlain Editorial Team · Reviewed for accuracy · Last updated July 2026
⚠️ Educational only. TaxPlain does not provide tax, legal, or financial advice. Always consult a qualified tax professional about your specific situation.
What this is
A W-2, officially called the Wage and Tax Statement, is the form your employer sends each year summarizing how much you earned and how much was withheld for federal, state, and other taxes. If you worked as an employee at any point during the year, you should receive one.
Employers are required to send W-2s to every employee and to the Social Security Administration by January 31 of the following year. You'll use the numbers on this form to fill in your Form 1040 when you file your return.
Each employer you worked for issues a separate W-2. If you had two jobs during the year, expect two forms, and both need to be reported when you file. It's easy to assume your W-2 is just a formality, but it's actually the document the IRS cross-checks against whatever you report on your return. A mismatch between what your employer reported and what you filed is one of the most common triggers for an IRS notice.
Who it affects
✓ Applies to
Anyone classified as a W-2 employee, meaning your employer withholds taxes from your paycheck and pays a share of Social Security and Medicare on your behalf.
↑ Also applies to
Seasonal, part-time, and multi-state workers. If you worked in more than one state for the same employer, your W-2 may list wages separately for each state, and you may need to file more than one state return.
📅 W-2 DEADLINE
Employers must mail or otherwise provide W-2s by January 31. If you haven't received yours by early February, contact your employer's payroll department before contacting the IRS. Most delays are simple mailing or address issues, not something to panic about right away.
Box-by-box breakdown
Understanding your W-2 boxes
The boxes on your W-2 aren't just numbers — each one reports something specific that flows onto your Form 1040 or affects your state return.
Box 1 (Wages, tips, other compensation) — your federal taxable wages. Often lower than your actual salary because it excludes pre-tax deductions like retirement contributions and some health insurance premiums.
Box 2 (Federal income tax withheld) — the total amount your employer sent to the IRS on your behalf. This determines whether you get a refund or owe more when you file.
Boxes 3 & 4 (Social Security wages & tax) — Social Security wages are capped each year, so if you earned above that cap, Box 3 won't match Box 1.
Boxes 5 & 6 (Medicare wages & tax) — there's no wage cap for Medicare, so Box 5 is often the highest wage figure on the form.
Box 10 (Dependent care benefits) — relevant if your employer offers a dependent care flexible spending account. Can affect eligibility for certain credits.
Box 12 (Coded amounts) — covers items like 401(k) and HSA contributions. Each letter code represents a different benefit. See our HSA guide for more on Box 12 code W.
Box 13 (Checkboxes) — statutory employee, retirement plan, and third-party sick pay. If "retirement plan" is checked, it can affect your IRA deduction limits.
Box 14 (Other) — a catch-all for items like union dues, state disability insurance, or after-tax retirement contributions.
Boxes 15–20 (State and local) — if you worked in multiple states, look here for separate wage and withholding breakdowns per state.
Related forms often involved
A W-2 rarely stands alone. Depending on your situation, you may need to pair it with a few other forms and figures.
Form 1040 — where your W-2 wages ultimately land, on the wages line of your return, and where your withholding gets credited against your total tax bill.
Form W-4 — the form you filled out with your employer that determines how much tax gets withheld in the first place. Adjusting your W-4 mid-year changes what your next W-2 will show.
Form 1099-NEC — if you also did freelance or contract work, that income shows up on a 1099-NEC instead of a W-2, since no taxes are withheld and you're responsible for paying them yourself.
Common mistakes to avoid
⚠️ CONFUSING BOX 1 WITH GROSS PAY
Box 1 already excludes pre-tax deductions like 401(k) and health insurance, so it's usually lower than your total salary. Don't assume it's wrong.
⚠️ FILING BEFORE A CORRECTED W-2 ARRIVES
If your employer catches an error after issuing your original W-2, they'll send a W-2c. Filing with the wrong numbers can trigger an IRS notice later.
⚠️ IGNORING STATE-SPECIFIC BOXES
Especially for people who moved or worked remotely across state lines. If Boxes 15–17 show wages and withholding for more than one state, both states may need a return, and missing one can lead to penalties down the line.
What to do right now
Check that your name, Social Security number, and wage amounts match your final pay stub of the year. If anything looks off, ask your employer's payroll department for a corrected W-2 before you file. If you're missing a W-2 entirely, request a copy directly from your employer rather than waiting until the filing deadline to sort it out. If your employer has gone out of business or won't respond, the IRS can help you reconstruct your wage information using your final pay stub, but that process takes longer, so start early if you suspect a problem.
Questions to ask your tax professional
01Does my Box 1 amount look right given my total pay and deductions?
02Should I adjust my W-4 based on what this W-2 shows I owed or got back?
03How do I handle multiple W-2s from different employers or states?
04What do the codes in Box 12 mean for my specific situation?
05Could contributing more to retirement or an HSA lower my taxable wages next year?
Frequently asked questions
What is a W-2 form used for?
A W-2 reports your annual wages and the taxes withheld from your paycheck. You use it to fill out your federal and state tax returns, and the IRS uses it to check that you're reporting your income correctly.
When do employers have to send W-2s?
Employers are required to send W-2s to employees and to the Social Security Administration by January 31 each year, covering wages from the previous calendar year.
What's the difference between a W-2 and a 1099?
A W-2 is issued to employees and shows taxes already withheld. A 1099 is issued to independent contractors, who receive their full pay with no taxes withheld and are responsible for paying those taxes themselves.
What if my W-2 has an error?
Contact your employer's payroll department right away. They'll issue a corrected form called a W-2c. Wait for the corrected version before filing if the error affects your wages or withholding.
How much will I get back based on my W-2?
Your refund or balance due depends on comparing the tax withheld in Box 2 against your total tax liability, which also factors in deductions, credits, and any other income you have. A tax professional or tax software can calculate this precisely.