Calculators
Free business calculators
Payroll, tax, pricing and loan math for small businesses, updated for 2026. Every calculator runs in your browser and shows its working, so you can check the numbers.
Payroll Calculator
Take-home pay per paycheck with 2026 federal withholding, FICA, state tax and the employer's full cost.
Open calculatorProfit Margin Calculator
Margin from price and cost, or work backward to the price or cost that hits a target margin.
Open calculatorMarkup Calculator
Selling price from cost and markup, markup from price, max cost, and the markup behind a target margin.
Open calculatorSelf-Employment Tax Calculator (2026)
SE tax, the half-SE deduction, federal income tax and your quarterly estimate from net profit.
Open calculatorHourly to Salary Calculator
Turn an hourly rate into annual, monthly and per-paycheck pay, or a salary back into an hourly rate.
Open calculatorBusiness Loan Calculator
Payment, total interest, fee-adjusted APR and a full amortization schedule with extra payments.
Open calculatorSBA Loan Calculator
7(a), Express, 504 and Microloan payments with SBA rate caps, the FY2026 guarantee fee and APR.
Open calculator