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2026 federal planning tool

Estimate the Social Security and Medicare tax tied to Schedule C-style self-employment profit. This does not estimate regular federal income tax.

Expected annual Schedule C net profit

Use profit after ordinary business expenses, before self-employment tax.

Filing status

Used only for the Additional Medicare Tax threshold.

W-2 Social Security wages

Optional. Usually Form W-2 box 3, plus Social Security tips if any.

W-2 Medicare wages

Optional. Usually Form W-2 box 5. Can differ from Social Security wages.

Planning estimate only. This is not tax advice, not a completed tax return, and not a guarantee of what you will owe.

Estimated Schedule SE tax

Rounded to the nearest dollar. Federal income tax, state tax, credits, and penalties are not included.

Net earnings

92.35% of net profit when profit is positive.

Social Security part

Up to the 2026 wage base.

Medicare part

2.9% of net earnings. No wage base cap.

Possible Additional Medicare

Estimated on self-employment income only.

Planning total

Schedule SE tax plus possible Additional Medicare Tax.

Half SE tax deduction

Above-the-line deduction estimate from Schedule SE.

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.