Four calculators built around one question: what do I actually owe?
SelfEmploymentCalculator started as a way to answer a question that most general tax calculators skip over: what does self-employment tax cost on top of income tax, and how does that change once you cross into S-corp territory?
The site now covers four tools. The Self-Employment Tax Calculator isolates the 15.3% SE tax on its own. The 1099 Tax Calculator layers federal income tax on top of it for a combined number. The Quarterly Tax Calculator splits an annual figure into four IRS due dates. The S-Corp Savings Calculator models whether an S-corp election is worth the extra paperwork at your income level. A 2026 tax reference page and three guides fill in the reasoning behind the math.
Freelancers rarely need every number at once. Someone new to 1099 work usually just wants the SE tax figure. Someone mid-year wants a quarterly payment. Splitting the site into four focused calculators keeps each one fast to use instead of asking for fifteen fields up front.
Every rate on this site traces back to a published IRS or Social Security Administration source: Schedule SE, IRS Publication 505, and the SSA's annual COLA fact sheet for the wage base. The full sourcing and review process is on the editorial standards page.
Priya Raman writes and maintains the guides and reference pages. You can read more about her on the authors page.