2026 tax figures and sources
Every calculator on FreelanceTaxKit uses the federal figures below for tax year 2026. They were last checked on October 25, 2026.
Income tax brackets
| Rate | Single | Married filing jointly | Head of household |
|---|---|---|---|
| 10% | $0 to $12,400 | $0 to $24,800 | $0 to $17,700 |
| 12% | $12,400 to $50,400 | $24,800 to $100,800 | $17,700 to $67,450 |
| 22% | $50,400 to $105,700 | $100,800 to $211,400 | $67,450 to $105,700 |
| 24% | $105,700 to $201,775 | $211,400 to $403,550 | $105,700 to $201,750 |
| 32% | $201,775 to $256,225 | $403,550 to $512,450 | $201,750 to $256,200 |
| 35% | $256,225 to $640,600 | $512,450 to $768,700 | $256,200 to $640,600 |
| 37% | Over $640,600 | Over $768,700 | Over $640,600 |
Other figures
| Item | 2026 figure |
|---|---|
| Standard deduction | $16,100 single and married filing separately, $32,200 married filing jointly, $24,150 head of household |
| Self-employment tax | 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net profit |
| Social Security wage base | $184,500 |
| Additional Medicare tax | 0.9% over $200,000 single or head of household, $250,000 married filing jointly, $125,000 married filing separately |
| Qualified business income deduction | 20%; phase-in starts at $201,750 ($403,500 joint) over $75,000 ($150,000 joint); $400 minimum for active businesses with $1,000+ of profit |
| Business mileage | 72.5¢ a mile Jan 1 to Jun 30; 76¢ a mile Jul 1 to Dec 31 |
| Home office, simplified | $5 per sq ft, up to 300 sq ft |
| Estimated tax due dates | Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027 |
Simplifications
- Calculators cover US federal tax only. State and local taxes are not included.
- Above the threshold, the QBI deduction is phased out as if your work were a specified service business (consulting, health, law, accounting and similar). This is cautious: other businesses may get a larger deduction.
- Tax credits, capital gains, the alternative minimum tax and itemised deductions are not included.
Sources
- IRS: 2026 inflation adjustments (Rev. Proc. 2025-32)
- Social Security Administration: contribution and benefit base
- IRS: Standard mileage rates (Notice 2026-10 and Internal Revenue Bulletin 2026-29)
- IRS: Estimated taxes
- IRS: Home office deduction
The calculation code is tested against hand-worked examples before every update. Spotted something wrong? Tell me.