Calculators · 2026 · free

Free tax calculators for freelancers.

Free tools covering federal, state, and self-employment tax math for US 1099 contractors and self-employed Americans. No signup, no email — every calculator runs entirely in your browser.

Filing & retirement

Filing & retirement

Stay penalty-free, time your contributions, set the right S-corp salary.

Estimated tax penalty§6654 underpayment penalty for missed quarterly payments. 1099-K threshold checkerWill PayPal/Venmo/Stripe send you a 1099-K? OBBBA-restored thresholds. Solo 401(k) contributionMax by income, age, entity type — 2026 limits + SEP-IRA compare. 401(k) projectionProject your retirement balance — contribution %, employer match, salary growth, 4% withdrawal. Roth IRA projectionTax-free retirement balance with 2026 MAGI phase-out check ($150k/$236k start). SEP-IRA max + projectionMax contribution for sole props (20% effective) and S-corps (25% of wages) — 2026 limits. Personal loanMonthly payment + total cost + true APR including origination fee (the number most calcs hide). Compound interestProject growth from initial deposit + periodic contributions. Daily/monthly/annual compounding, inflation adjustment. Net worth (self-employed)Assets minus liabilities with business equity + concentration risk + liquid net worth. Cost of living comparisonGeo-arb for remote freelancers — housing + expenses + state income tax delta between two states. DTI ratio + lender tierFront-end + back-end DTI with lender tier classification and 1099-specific income-treatment notes. Payroll tax calculatorEmployer + employee FICA, federal withholding, FUTA — for S-corp owners. S-corp savings calculatorSE tax saved by electing S-corp vs sole proprietor — with reasonable-salary audit-risk indicator and 5-year compound value. ACA subsidy calculator2027 marketplace premium tax credit estimate based on projected 1099 income — FPL band, contribution cap, monthly subsidy. Emergency fund (irregular income)Risk-weighted target for freelancers — adjusts for income volatility + client concentration. Not the W-2 "3 months" rule.