Federal tax filing (W-2 employee)

Federal tax filing for W-2 employees is the annual process of reporting wage income to the IRS and calculating taxes owed or refunds due. Approximately 150+ million individual federal tax returns are filed each year, and the vast majority of American workers are W-2 employees whose employers withhold income taxes, Social Security, and Medicare from their paychecks throughout the year.

76 steps across 12 sections

1. Gather Personal Information

  • Social Security Numbers (SSNs) for yourself, spouse (if filing jointly), and all dependents
  • Date of birth for all individuals on the return
  • Bank account and routing numbers (for direct deposit of refund or direct debit of payment)
  • Prior year's tax return (for reference, AGI verification for e-filing)
  • Identity Protection PIN (IP PIN) if issued by the IRS

2. Collect All Income Documents (January-February)

  • W-2 forms from every employer you worked for in 2025 (employers must send by January 31, 2026; sinceJan 31 fell on a Saturday in 2026, the deadline was extended to February 2, 2026)
  • 1099-INT — Interest income from banks/credit unions
  • 1099-DIV — Dividend income from investments
  • 1099-G — State tax refunds, unemployment compensation
  • 1099-R — Retirement distributions (IRA, 401(k), pension)
  • 1099-B — Brokerage/capital gains transactions
  • 1099-MISC / 1099-NEC — Any freelance or side income
  • SSA-1099 — Social Security benefits received
  • 1098 — Mortgage interest paid
  • 1098-E — Student loan interest paid

3. Collect Deduction and Credit Documentation

  • Receipts for charitable donations (cash and non-cash)
  • Medical and dental expense receipts (if potentially exceeding 7.5% of AGI)
  • State and local tax payments (property tax bills, state income tax payments)
  • Childcare/dependent care expenses (provider name, address, EIN, amounts)
  • Educator expenses receipts (if you're a teacher, up to $300)
  • Energy-efficient home improvement receipts
  • Health insurance documentation (Form 1095-A if marketplace insurance)

4. Determine Your Filing Status

  • Single — Unmarried, divorced, or legally separated as of Dec 31, 2025
  • Married Filing Jointly (MFJ) — Married and filing one return together
  • Married Filing Separately (MFS) — Married but each files own return
  • Head of Household (HOH) — Unmarried, paid >50% of household costs, have qualifying dependent
  • Qualifying Surviving Spouse — Spouse died in 2023 or 2024, have dependent child

5. Decide Standard vs. Itemized Deductions

  • Married Filing Jointly: $31,500
  • Head of Household: $23,625
  • Additional for 65+ or blind: $1,550 (married) / $1,950 (single)
  • NEW: Senior bonus deduction (ages 65+): additional $6,000 ($12,000 for married couples both 65+). Phases out for MAGI above $75,000 ($150,000 joint). Available 2025-2028 per OBBBA. This is on top of the existing additional standard deduction for seniors
  • Married Filing Jointly: $32,200
  • Head of Household: $24,150
  • State and local taxes (SALT) — capped at $40,000 for 2025 tax year (raised from $10,000 by the One, Big, Beautiful Bill; increases 1% annually through 2029, then reverts to $10,000 in 2030). Import...
  • Mortgage interest on up to $750,000 of qualified residence loans
  • Charitable contributions
  • Medical expenses exceeding 7.5% of AGI

6. Choose Your Filing Method

  • IRS Free File — Free guided software if AGI is $89,000 or less
  • IRS Direct File — Free IRS-built tool for simple returns (available in select states)
  • Tax Software — TurboTax, H&R Block, TaxAct, TaxSlayer, FreeTaxUSA
  • CPA/Tax Professional — Enrolled agents, CPAs, tax attorneys
  • VITA/TCE — Free in-person help (income under $67,000 or age 60+)
  • Paper filing — Mail Form 1040 (slowest, highest error rate)

7. Complete Form 1040

  • Personal information and filing status
  • Income (W-2 wages go on Line 1a)
  • Adjustments to income (above-the-line deductions)
  • Standard or itemized deduction
  • Taxable income calculation
  • Tax computation
  • Credits (child tax credit, education credits, earned income credit, etc.)
  • Other taxes (self-employment, additional Medicare, etc.)
  • Payments and refundable credits
  • Refund or amount owed

8. Review and Double-Check

  • Verify all SSNs match exactly
  • Confirm W-2 amounts match what's on the form
  • Check math (software does this automatically)
  • Verify bank routing/account numbers for direct deposit
  • Review filing status selection

9. File Your Return

  • E-file is fastest and most accurate (21-day refund turnaround)
  • Sign electronically (use prior year AGI or IP PIN for identity verification)
  • Keep confirmation number and copy of filed return

10. Handle Payment or Refund

  • If refund: Choose direct deposit (fastest), paper check, or apply to next year's estimated taxes
  • If owed: Pay by April 15 via IRS Direct Pay, EFTPS, credit/debit card, check, or installment plan

11. Understanding Your W-2 Boxes

  • Box 1: Wages, tips, other compensation (goes on 1040 Line 1a)
  • Box 2: Federal income tax withheld
  • Box 3: Social Security wages
  • Box 4: Social Security tax withheld
  • Box 5: Medicare wages and tips
  • Box 6: Medicare tax withheld
  • Box 12: Various codes (e.g., DD = employer health insurance cost, D = 401(k) contributions, W = HSA contributions)
  • Box 13: Checkboxes for statutory employee, retirement plan, third-party sick pay
  • Box 15-17: State tax information
  • Box 18-20: Local tax information

12. Multiple W-2s (Multiple Employers)

  • Report ALL W-2s on a single Form 1040 — each W-2 is entered separately, and the software/IRS totals them
  • Check for Social Security tax over-withholding: The 2025 Social Security wage base is $176,100 (2026 is $184,500). If combined wages from multiple employers exceed this amount, each employer may ha...
  • Having multiple W-2s may push you into a higher marginal tax bracket than either employer's withholding anticipated — check whether you owe

Common Mistakes

  • Wrong or missing Social Security Numbers
  • Not reporting all income
  • Choosing the wrong filing status
  • Missing the standard deduction vs. itemize comparison
  • Forgetting above-the-line deductions

Pro Tips

  • Use the IRS Tax Withholding Estimator
  • E-file with direct deposit
  • Always compare MFJ vs. MFS
  • Max out above-the-line deductions
  • Check "Where's My Refund"

Sources

Related Checklists