US Federal Income Tax Calculator (2026)
Calculate your 2026 US federal individual income tax, standard deduction, and marginal brackets across single, married, and head of household filing statuses.
How It Works & Methodology
Estimates US federal individual income tax on ordinary wage and salary income for tax year 2026 under IRS Revenue Procedure 2025-32 inflation adjustments.
Key Assumptions & Scope:
- Calculates federal individual income tax only; state, county, and city income taxes are excluded.
- Standard deductions for tax year 2026 are applied ($16,100 Single/MFS, $32,200 MFJ, $24,150 HoH).
- FICA payroll withholdings (Social Security 6.2% and Medicare 1.45%) and refundable tax credits (e.g., CTC/EITC) are not included.
Frequently Asked Questions
What standard deduction amounts apply for tax year 2026?
Under IRS Rev. Proc. 2025-32, the 2026 standard deduction is $16,100 for Single and Married Filing Separately, $32,200 for Married Filing Jointly, and $24,150 for Head of Household.
Why are state and local taxes (SALT) excluded?
State income taxes range from 0% (in states like Texas, Florida, and Washington) to over 13% in California. This calculator focuses strictly on the universal federal tax schedule.
Does this calculator estimate Social Security and Medicare taxes?
No. FICA taxes (6.2% Social Security up to the statutory wage base limit and 1.45% Medicare) are mandatory payroll withholdings, separate from federal income tax.