How much self-employment tax will I owe for 2026 or 2027 planning?
Use this self-employment tax calculator to estimate SECA tax from net profit for 2025, 2026, or 2027 planning. It calculates the Social Security and Medicare portions and shows the deductible half of self-employment tax for planning.
self-employment tax calculator
Quick answer
Self-employment tax is based on net profit, not gross revenue. The calculator applies the Schedule SE adjustment, estimates Social Security and Medicare tax, and shows the deductible half of SE tax.
Also answers
- 1099 tax calculator
- freelance tax calculator
- SE tax calculator
- self-employed Medicare and Social Security tax
Good fit when
- Freelancers estimating Schedule SE tax
- 1099 workers deciding how much to set aside
- Business owners planning quarterly payments
Have ready
- Tax year
- Filing status
- Net self-employment profit and W-2 wages
Result you get
Estimated SE tax, Social Security portion, Medicare portion, and deductible half.
How this calculation works
- Applies the 92.35% adjustment to net profit to get SE earnings.
- Calculates Social Security and Medicare portions using IRS rates and wage bases.
- Computes total SE tax and the deductible half of SE tax.
Common mistakes and caveats
- W-2 wages can reduce the Social Security portion subject to SE tax.
- Additional Medicare tax and special cases may not be fully modeled.
- This estimate is federal only; state rules vary.
FAQ
Does this include the deduction for half of SE tax?
Yes. The estimate shows total SE tax and the deductible portion you can claim on Form 1040.
TaxGuide Pro provides free state and federal tax calculators for individuals, freelancers, and small businesses.