Form W-2 Guide 2026: Wage & Tax Statement PDF & Box Instructions
Complete overview of IRS Form W-2 for employees, employers, and payroll professionals. Understand box definitions, FICA tax limits, and paystub matching.
Key Takeaways & Executive Summary
Official IRS Form W-2 Guide: Wage & Tax Statement
Learn how to read Boxes 1 through 20 on your Form W-2, verify year-end paystub totals, or create professional paystubs online in 60 seconds.
What Is IRS Form W-2 & Who Receives It?
Form W-2 (Wage and Tax Statement) is the mandatory annual tax form that employers file with the Social Security Administration (SSA) and issue to every W-2 employee by January 31 following the tax year.
Form W-2 Boxes 1 to 20 Comprehensive Field Reference
Key box definitions on IRS Form W-2:
| Box # | Field Name | Tax Impact & 2026 Rules |
|---|---|---|
| Box 1 | Wages, tips, other compensation | Federal taxable wages (Gross Pay minus pre-tax 401k/HSA/Health Insurance). |
| Box 2 | Federal income tax withheld | Total Federal Income Tax (FIT) deducted from paychecks during the year. |
| Box 3 | Social Security wages | Wages subject to 6.2% SS tax (Capped at $176,100 for 2026). |
| Box 4 | Social Security tax withheld | 6.2% of Box 3 (Maximum $10,918.20 for tax year 2026). |
| Box 5 | Medicare wages and tips | Total Medicare wages (No wage base limit; includes 401k contributions). |
| Box 6 | Medicare tax withheld | 1.45% of Box 5 (+ 0.9% Additional Medicare tax for wages > $200k). |
| Box 12 | Deferred compensation codes | Report 401(k) contributions (Code D), HSA (Code W), Employer Health Care (Code DD). |
| Boxes 15-20 | State & Local tax withholding | State Employer ID, State Taxable Wages, SIT withheld, and Local income taxes. |
Box 1 vs Box 3 vs Box 5 Salary Calculation Math
Why is Box 1 often smaller than Box 3 and Box 5 on your Form W-2? Pre-tax benefit deductions lower federal income tax but remain subject to FICA taxes:
Real-World $60,000 W-2 Salary Math Breakdown:
- Gross Annual Salary: $60,000
- Pre-Tax 401(k) Contribution: -$5,000
- Pre-Tax Health Insurance Premiums: -$2,000
- Box 1 (Federal Taxable Wages): $53,000 ($60,000 - $5,000 - $2,000)
- Box 3 & Box 5 (FICA Wages): $58,000 ($60,000 - $2,000 health insurance only; 401k is FICA taxable)
Common Box 12 Benefit Codes (401k, HSA, Health Care)
Form W-2 Employer Filing Deadlines (January 31)
Federal law mandates that employers must mail or electronically deliver Copy B of Form W-2 to employees by January 31. Simultaneously, Copy A must be submitted to the Social Security Administration (SSA) along with Form W-3 transmittal.
Related IRS Tax & Payroll Guides
Paystub vs W-2 Guide →
Learn how monthly paystubs reconcile with annual Form W-2.
Paystub Tax Deductions Guide →
Understand FIT, FICA, OASDI, and pre-tax paystub codes.
How to Create Paystub Online →
Generate print-ready 2026 PDF paystubs free.
Frequently Asked Questions
Statutory References & Legal Citations
This publication is audited against official federal statutes, Treasury regulations, and published IRS bulletins. Verified primary source references are provided below for independent legal and accounting cross-examination.
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