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Calculate self-employment tax (15.3% FICA) with quarterly estimated payment amounts for freelancers.
Self-Employment Tax Calculator is a free online calculator that lets you calculate self-employment tax (15.3% FICA) with quarterly estimated payment amounts for freelancers. It runs entirely in your browser — no account creation, no software installation, and no data uploaded to external servers. This makes it a practical choice for anyone who needs to calculate and compare payroll & hr tools-related values quickly and privately. Whether you are a professional working through a daily task list, a student checking homework figures, or a freelancer preparing a deliverable, Self-Employment Tax Calculator gives you an instant result you can copy, screenshot, or feed into the next step of your workflow. ToolPeg hosts this tool alongside payroll & hr tools tools and 300+ other free utilities so you always have a single bookmark for everyday browser-based tasks.
ToolPeg is designed around browser-based workflows. Review the specific tool's description and behavior if you are using sensitive or regulated data.
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Calculate your self-employment tax (Social Security + Medicare), estimated income tax, and quarterly payment amounts. Based on 2025 IRS brackets. 2026 brackets will be updated when published by the IRS.
Your net profit after business expenses (Schedule C, Line 31)
How SE tax works: Self-employed individuals pay both the employer and employee portions of FICA taxes.
The taxable base is 92.35% of net SE income. Social Security is 12.4% (capped at $176,100 for 2025) and Medicare is 2.9% (uncapped). An additional 0.9% Medicare applies on gross SE income above the threshold for your filing status.