US Side-Hustle Tax Calculator
Have a job and a side business in United States? See the extra tax on your side profit, what you keep and how much of each payment to set aside, in USD.
Forged in Faith, Built to Last
Rules year: 2026 tax year (IRS Rev. Proc. 2025-32, SSA 2026 fact sheet). Estimate only, not tax, legal or financial advice. Check official guidance or a qualified professional.
Official sources
- IRS: Rev. Proc. 2025-32, 2026 tax rate tables and standard deduction
- IRS: 2026 inflation adjustments (standard deduction $16,100 / $32,200)
- SSA: 2026 Social Security wage base $184,500 and FICA rates
- IRS: Topic 751, Social Security and Medicare withholding rates
- IRS: Self-employment tax (Schedule SE)
Free vs Pro
Free
- Extra tax caused by side income
- What you keep and the set-aside percentage
- Registration check
No account needed. Nothing you type is saved. With a free account (no card): 2 full PDF/CSV exports a month, shared across all tools.
Pro adds
- PDF and CSV export
- JSON API with your licence key
Get Pro: CA$5.00 CAD/month or CA$49.00 CAD/year · one plan for all our tools · cancel any time · secure Stripe checkout
Pro is billed in Canadian dollars: about US$3.56 a month or about US$34.86 a year at the Bank of Canada rate on 2026-10-21. Your card provider converts at its own rate and may add a fee.
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What would make US Side-Hustle Tax Calculator (2026) more useful? Bugs, missing features, confusing wording: our R&D team reads every suggestion. Nothing is offered in return, and we never publish reviews without permission.