How to Fill Out a W-2 for Your First Employee [2026 Step-by-Step Guide]

Congratulations on hiring your first employee! Now comes the paperwork. This guide walks you through every box on the W-2 form so you can file correctly and avoid IRS penalties.

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Quick Overview

• January 31, 2026: Deadline to give W-2 to employees
• 6 Copies Required: Employee, SSA, state, and your records
• $50-$290 Penalty: Per form for late or incorrect filing

What You Need Before Starting

Before you fill out the W-2, gather these documents and information:

Your Business Information

• Employer Identification Number (EIN)
• Legal business name and address
• State employer ID number (if applicable)

Employee Information

• Social Security number (from W-4)
• Full legal name and current address
• Completed Form W-4 on file

Payroll Records

• Total wages paid during the year
• Federal income tax withheld
• Social Security and Medicare taxes withheld

Benefits & Deductions

• Retirement plan contributions (401k, etc.)
• Health insurance premiums (if pre-tax)
• State and local taxes withheld

Don't have all this information organized? Your paystubs contain year-to-date totals for all these categories. If you've been generating paystubs throughout the year, you already have what you need.

How to Fill Out a W-2 Form (Step-by-Step Summary)

1. Gather Employee Information: Collect your employee's full legal name, Social Security number, and address before starting the W-2.
2. Enter Employer Information: Fill in your business name, address, and EIN in the employer section (Boxes b, c).
3. Report Wages and Tips: Enter total wages, tips, and other compensation in Box 1 and Social Security wages in Box 3.
4. Enter Tax Withholdings: Report federal income tax withheld (Box 2), Social Security tax (Box 4), and Medicare tax (Box 6).
5. Complete State Information: Fill in state wages (Box 16), state income tax withheld (Box 17), and your state ID number (Box 15).
6. Distribute Copies: Give Copy B and C to your employee, file Copy A with SSA, and keep Copy D for your records.

W-2 Box-by-Box Instructions

Follow these instructions to fill out each box correctly.

1. Employer Information (Boxes a-c)

• Box a: Employee's Social Security Number Enter your employee's 9-digit SSN exactly as shown on their Social Security card. Format: XXX-XX-XXXX
• Box b: Employer Identification Number (EIN) Your business's 9-digit EIN. Format: XX-XXXXXXX. Don't have one? Apply for an EIN.
• Box c: Employer's Name, Address, and ZIP Code Your legal business name and mailing address. Use the same name you used when applying for your EIN.

2. Employee Information (Boxes e-f)

• Box e: Employee's Name Full legal name exactly as shown on their Social Security card. First name, middle initial, last name.
• Box f: Employee's Address Current mailing address including street, city, state, and ZIP code.

3. Wages and Taxes (Boxes 1-6)

• Box 1: Wages, Tips, Other Compensation Total taxable wages paid during the year. This is gross wages minus pre-tax deductions (401k, health insurance, FSA). This is the amount subject to federal income tax.

  💡 Tip: This should match the YTD Gross on your employee's final paystub of the year (minus pre-tax deductions).

• Box 2: Federal Income Tax Withheld Total federal income tax you withheld from the employee's paychecks throughout the year. This is based on their W-4 selections.
• Box 3: Social Security Wages Total wages subject to Social Security tax. Usually the same as Box 1, but capped at $168,600 for 2025 (the wage base limit).
• Box 4: Social Security Tax Withheld Total Social Security tax withheld. Should be Box 3 × 6.2% (maximum $10,453.20 for 2025).
• Box 5: Medicare Wages and Tips Total wages subject to Medicare tax. Usually the same as Box 1. No wage cap for Medicare.
• Box 6: Medicare Tax Withheld Total Medicare tax withheld. Should be Box 5 × 1.45%. Additional 0.9% on wages over $200,000.

4. State and Local Taxes (Boxes 15-20)

• Box 15: State / Employer's State ID Number Two-letter state abbreviation and your state employer ID number. This is different from your federal EIN.
• Box 16: State Wages, Tips, etc. Total wages subject to state income tax. Often the same as Box 1.
• Box 17: State Income Tax Total state income tax withheld. Leave blank if your state has no income tax (e.g., TX, FL, WA).
• Boxes 18-20: Local Taxes For cities or localities that impose income tax. Only fill in if applicable to your location.

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W-2 Deadlines You Can't Miss

• January 31, 2026: Deadline to give W-2 to employees. Must be postmarked, hand-delivered, or electronically available by this date. Also the deadline to file with SSA.
• February 28, 2026 (Paper Filing): If you're filing paper W-2s with the SSA (fewer than 250 forms), this is the mailing deadline. Electronic filing is strongly recommended.
• March 31, 2026 (Electronic Filing): Extended deadline if you file W-2s electronically with the SSA. Required if filing 250+ forms.

Late Filing Penalties

• $50 per form if filed within 30 days of deadline
• $120 per form if filed more than 30 days late but by August 1
• $290 per form if filed after August 1 or not at all
• $580 per form for intentional disregard of filing requirements

Common W-2 Mistakes to Avoid

• Wrong Social Security Number: Verify the SSN against the employee's Social Security card. Transposed digits are the #1 cause of W-2 corrections.
• Misspelled Names: Name must match Social Security records exactly. "Bob" instead of "Robert" will cause issues.
• Box 1 ≠ Box 3: These are often different due to pre-tax deductions or the Social Security wage cap. Don't assume they're equal.
• Missing State Information: If your state has income tax, boxes 15-17 must be completed. Each state may have different requirements.
• Using Wrong Tax Year Forms: W-2 forms are year-specific. Make sure you're using 2025 forms for 2025 wages (filed in early 2026).
• Forgetting to File W-3: Form W-3 is a summary that must accompany all W-2s sent to the SSA. It totals all W-2 amounts.

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Frequently Asked Questions

When do I need to give W-2s to employees?

You must provide W-2 forms to employees by January 31st of the year following the tax year. For 2025 wages, W-2s must be given to employees by January 31, 2026. This deadline applies whether you mail, hand-deliver, or provide electronic access to the W-2.

What if I make a mistake on the W-2?

If you discover an error after giving the W-2 to your employee, you'll need to issue a corrected W-2c form. Common errors include wrong Social Security numbers, incorrect wage amounts, or misspelled names. Issue the W-2c as soon as you discover the error.

Do I need to file W-2s with the government?

Yes, you must file Copy A of all W-2s with the Social Security Administration (SSA) by January 31st, along with Form W-3 (Transmittal of Wage and Tax Statements). You can file electronically through the SSA's Business Services Online or mail paper forms.

What's the difference between W-2 and 1099?

W-2 forms are for employees — workers whose taxes you withhold and who receive benefits. 1099-NEC forms are for independent contractors — workers who control how they do their work and pay their own taxes. Misclassifying workers can result in IRS penalties.

Do I need an EIN to issue W-2s?

Yes, you need an Employer Identification Number (EIN) to file W-2 forms. If you don't have one, apply for free on the IRS website (irs.gov) using Form SS-4. You can get an EIN immediately online if you have a valid SSN or ITIN.

How many copies of the W-2 do I need?

The W-2 has multiple copies: Copy A goes to the SSA, Copy B and Copy C go to the employee (for federal and their records), Copy D is for your records, and Copy 1 and Copy 2 go to state/local tax departments if applicable. Most online generators create all necessary copies.

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Related Resources

• W-2 Generator - Generate professional W-2 forms with automatic calculations.
• When Do You Get Your W-2? - Timeline for W-2 distribution and what to do if yours is late.
• W-2 vs 1099 Differences - Know when to use W-2 vs 1099 forms for your workers.
• Apply for EIN Online - Get your Employer Identification Number to file W-2s.
• Paystub Generator - Create paystubs throughout the year to track W-2 data.
• 1099 Generator - Need to file 1099s for contractors instead? Use our 1099 generator.