How Self-Employment Tax Works
Self-employed people pay both halves of Social Security (12.4%) and Medicare (2.9%) — 15.3% total on the first $176,100 (2026). Regular employees split this with their employer. You calculate SE tax on Schedule SE.
The 92.35% Adjustment
SE tax applies to 92.35% of net earnings (not 100%). This adjusts for the employer's half of FICA that would normally be deductible. So effective rate on net earnings is ~14.13%, not 15.3%.
Half-Tax Deduction
You can deduct 50% of your SE tax from your income (not self-employment income specifically) on Form 1040. This lowers income tax, though it doesn't reduce the SE tax itself.
FAQ
Additional 0.9% Medicare tax?
Above $200k single / $250k MFJ, there's an Additional Medicare Tax of 0.9%. This tool doesn't include it — most freelancers fall below.
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Why Use This Self-Employment Tax?
The Self-Employment Tax runs entirely in your browser, which means three things matter for you. First, it's instant — there's no server round-trip, no upload, no waiting on someone else's queue. Second, it's private — nothing you enter ever leaves your device, which makes it safe for sensitive numbers, draft copy, or files you don't want sitting on a third party's servers. Third, it's free forever — no signup, no email capture, no "basic vs. pro" upsell. Open the page, get the answer, close the tab.
Common Use Cases
- Everyday lookups when you need a fast, reliable answer without installing an app
- Cross-checking results from another tool or spreadsheet when accuracy matters
- Quick reference during work calls, school assignments, or planning sessions
- Sharing the link with a colleague or friend who needs the same answer
- Bookmarking for repeat tasks that come up regularly throughout the week
Privacy & How Your Data Is Handled
Every calculation and every transformation in the Self-Employment Tax runs locally in your browser using standard JavaScript. We don't upload your input to any server, we don't log it, and we don't pass it to a third-party API. The tool works the same whether you're on a fast home connection or completely offline once the page has loaded. If you want to verify this for yourself, open your browser's network tab and run the tool — you won't see any outbound request carrying your data.
Frequently Asked Questions
Is the Self-Employment Tax really free?
Yes. Every tool on ClickSolveTools is free with no signup, no email capture, no paywalled "pro" features, and no usage limits. We don't sell your data and we don't run ads inside the tool itself.
Does the Self-Employment Tax work on my phone?
Yes. The Self-Employment Tax is mobile-first and works in any modern browser on iOS, Android, Windows, Mac, Linux, and ChromeOS. Inputs are touch-friendly, the layout is fully responsive, and nothing requires a desktop-only feature to function.
Do I need to sign up or install anything?
No. There's no account, no extension, no app to download. Open the page in any browser, use the tool, and close the tab when you're done. Your usage isn't tied to a profile.
Is my data safe?
Everything runs locally in your browser. We don't transmit your inputs, calculations, or files to any server. You can use the tool with full confidence even for sensitive information.