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Browse United States calculators for federal income tax, FICA payroll tax, 401(k), Roth IRA, sales tax, mortgages, loans, and everyday finance decisions.

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US Federal Income Tax CalculatorUnited States flagUnited States - Tax year 2026Estimate 2026 US federal ordinary income tax from filing status, deduction choice, taxable income, and credits.FICA Payroll Tax CalculatorUnited States flagUnited States - Calendar year 2026Estimate US Social Security, Medicare, and Additional Medicare payroll tax for 2026 wages.401(k) Contribution CalculatorUnited States flagUnited States - Tax year 2026Estimate 2026 401(k) employee contribution room, employer match, and projected retirement balance.Roth IRA CalculatorUnited States flagUnited States - Tax year 2026Estimate 2026 Roth IRA contribution eligibility, phase-out reduction, and future account growth.Sales Tax CalculatorUnited States flagPopular in United StatesAdd or remove sales tax from a price and see tax amount and total clearly.Mortgage CalculatorEstimate a home loan or mortgage payment with principal, interest rate, and term.Loan CalculatorCalculate monthly loan payment, total interest, and repayment total for a fixed-rate loan.Currency ConverterConvert between major world currencies with live exchange rates and a fallback rate snapshot.Compound Interest CalculatorEstimate future value, compound interest earned, and growth from compounding frequency.Capital Gains Tax CalculatorEstimate capital gain, tax due, and after-tax proceeds from a sale.Retirement Savings CalculatorProject retirement savings from current balance, monthly contributions, years, and return rate.Inflation / Purchasing Power CalculatorEstimate future cost and purchasing power from an annual inflation rate.US Paycheck Withholding CalculatorUnited States flagUnited States - Tax year 2026Estimate federal withholding from pay period wages, Form W-4 inputs, pre-tax deductions, credits, and year-to-date withholding.US Self-Employment Tax CalculatorUnited States flagUnited States - Tax year 2026Estimate Social Security, Medicare, Additional Medicare Tax, and the self-employment tax deduction for contractors and small businesses.US Estimated Quarterly Tax CalculatorUnited States flagUnited States - Tax year 2026Plan quarterly estimated payments using projected income, withholding, credits, prior-year safe harbor, and self-employment tax.US Capital Gains Tax CalculatorUnited States flagUnited States - Tax year 2026Estimate short-term and long-term federal capital gains tax with filing status, ordinary income, losses, qualified dividends, and NIIT assumptions.US State Income Tax CalculatorUnited States flagUnited States - Tax year 2026Add state-level income tax estimates for high-demand states with filing status, deductions, credits, and local-tax caveats.US Child Tax Credit and EITC EstimatorUnited States flagUnited States - Tax year 2026Estimate common family tax credits with filing status, qualifying children, earned income, and phase-out assumptions.

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