Tools

Self-Employment Tax Calculator

Updated 2026-03-10

Data Notice: Figures, rates, and statistics cited in this article are based on the most recent available data at time of writing and may reflect projections or prior-year figures. Always verify current numbers with official sources before making financial, medical, or educational decisions.

Self-Employment Tax Calculator

Tax information is for educational purposes only and does not constitute tax advice. Consult a licensed tax professional for your specific situation.

Freelancers, independent contractors, and gig workers owe self-employment tax in addition to regular income tax. Use this calculator to estimate your total 2026 tax liability and plan your quarterly payments.

Calculate Your Self-Employment Tax

[CALCULATOR WIDGET PLACEHOLDER]

Enter the following:

  1. Net self-employment income (gross income minus business expenses)
  2. Other income (W-2 wages, investment income, etc.)
  3. Filing status
  4. Business deductions (home office, vehicle, supplies, etc.)

The calculator shows:

  • Self-employment tax amount (Social Security + Medicare)
  • Half-of-SE-tax deduction
  • Federal income tax on combined income
  • Total estimated tax liability
  • Recommended quarterly payment amount

How Self-Employment Tax Is Calculated

Self-employment tax covers Social Security and Medicare — the same contributions W-2 employees split with their employer. As a self-employed worker, you pay both halves.

Step-by-Step Calculation

StepCalculationExample ($80,000 net SE income)
1. Apply 92.35% factorNet income x 0.9235$73,880
2. Social Security taxStep 1 x 12.4% (up to $174,900)$9,161
3. Medicare taxStep 1 x 2.9%$2,142
4. Total SE taxStep 2 + Step 3$11,303
5. Half-of-SE-tax deductionStep 4 ÷ 2$5,652

The $5,652 deduction in Step 5 reduces your adjusted gross income, lowering your income tax.

Additional Medicare Tax

If your combined income exceeds $200,000 (single) or $250,000 (married filing jointly), an additional 0.9% Medicare tax applies on the excess.

Sample Calculations

Freelancer: $50,000 Net Income (Single)

ItemAmount
Net SE income$50,000
SE tax base (x 92.35%)$46,175
SE tax (15.3%)$7,065
Half-SE-tax deduction$3,532
Taxable income (after standard deduction)$31,118
Federal income tax$3,482
Total federal tax$10,547
Quarterly payment$2,637

Gig Worker: $35,000 Net Income (Single, Part-Time)

ItemAmount
Net SE income$35,000
SE tax$4,945
Half-SE-tax deduction$2,473
Taxable income$17,177
Federal income tax$1,823
Total federal tax$6,768
Quarterly payment$1,692

High-Earning Consultant: $150,000 Net Income (Single)

ItemAmount
Net SE income$150,000
SE tax$21,194
Half-SE-tax deduction$10,597
Taxable income$124,053
Federal income tax$22,156
Total federal tax$43,350
Quarterly payment$10,838

Reducing Your Self-Employment Tax

Several strategies can lower your SE tax burden:

StrategyPotential Impact
Maximize business deductionsDirectly reduces SE income base
Contribute to SEP IRA or Solo 401(k)Reduces income tax (not SE tax)
Consider S Corp electionReduces SE tax on distributions
Claim the QBI deductionUp to 20% deduction on qualified business income
Hire your spouseCan shift income and create retirement benefits

For detailed strategies, see Self-Employment Tax Guide: Everything Freelancers Need to Know.

Key Takeaways

  • Self-employment tax is 15.3% on 92.35% of net self-employment income
  • The half-of-SE-tax deduction reduces your adjusted gross income (and your income tax)
  • Quarterly estimated payments are typically required to avoid underpayment penalties
  • Business deductions directly reduce your SE income, lowering both income tax and SE tax
  • S Corporation election can reduce SE tax if you consistently earn above $50,000–$60,000

Next Steps