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2026 federal planning tool
Self-Employment Tax Estimator
Estimate the Social Security and Medicare tax tied to Schedule C-style self-employment profit. This does not estimate regular federal income tax.
Estimated Schedule SE tax
$0
Rounded to the nearest dollar. Federal income tax, state tax, credits, and penalties are not included.
Net earnings
$0
92.35% of net profit when profit is positive.
Social Security part
$0
Up to the 2026 wage base.
Medicare part
$0
2.9% of net earnings. No wage base cap.
Possible Additional Medicare
$0
Estimated on self-employment income only.
Planning total
$0
Schedule SE tax plus possible Additional Medicare Tax.
Half SE tax deduction
$0
Above-the-line deduction estimate from Schedule SE.
Assumptions used
- Tax year 2026 federal self-employment tax only.
- Regular Schedule SE method only; optional methods, clergy rules, church employee income, and special K-1 adjustments are excluded.
- Social Security wage base used: $184,500.
- Additional Medicare Tax threshold used: $200,000 for Single, Head of Household, and Qualifying Surviving Spouse; $250,000 for Married Filing Jointly; $125,000 for Married Filing Separately.
- Federal income tax, state tax, local tax, QBI, credits, retirement deductions, health insurance deductions, and estimated tax penalties are excluded.
A practical checklist of income forms, deduction records, business documents, and tax payment proof to gather before filing an extended 2025 return.