How it works
The regular Schedule SE method generally uses 92.35% of positive net profit, with the $400 net-earnings threshold. Social Security is capped after your own W-2 Social Security wages. Additional Medicare uses your filing threshold and combined Medicare wages (including spouse wages for joint filers). Federal and state income taxes, optional SE methods and special cases are excluded.
Example
$50,000 annual profit with no W-2 wages gives $46,175 SE earnings: $5,725.70 Social Security and $1,339.08 Medicare, totaling $7,064.78.
Questions about this tool
Does the total include federal and state income tax?
No. The total shown covers the modeled self-employment taxes only. Federal and state income taxes, credits and estimated-payment requirements need a broader calculation.
Are these results independently verified?
No. Results and documents use the information you enter. Review the inputs and keep the underlying records.
Methodology sources
Tax year 2026. Sources reviewed September 19, 2026.