USA Calculators
18 toolsCalculators built around US tax rules, retirement accounts and financial systems.
Retirement
Roth IRAProject your Roth IRA balance at retirement — tax-free — from your starting balance, annual contribution, current age, retirement age and expected return, with a year-by-year growth chart and a total contributions vs growth breakdown.401(k)Project your 401(k) balance at retirement from your age, salary, contribution rate and tiered employer match — with the 2026 IRS limits and 50+ catch-up.RMDCalculate your Required Minimum Distribution (RMD) from a traditional IRA or 401(k) using the IRS Uniform Lifetime Table and your prior year-end account balance.Social SecurityEstimate your US Social Security retirement benefit from your average monthly earnings, birth year and claiming age, using the SSA's own PIA bend-point formula.
Salary
Tax
Federal Income TaxEstimate your 2026 US federal income tax by filing status: taxable income, tax owed, effective and marginal rate, and refund, using current IRS brackets.Capital Gains TaxEstimate your 2026 US federal capital gains tax on an asset sale — short-term vs long-term, stacked on your other income, with effective rate and net proceeds.Property TaxEstimate annual property tax from market value, assessment ratio, exemptions and a mill or percent rate, with a full assessed-to-taxable value breakdown.Self-Employment TaxEstimate US self-employment (SECA) tax on 1099 or net-profit income: Social Security and Medicare portions, the Additional Medicare Tax, and the deductible half.W-4 WithholdingSee how your Form W-4 choices — filing status, the multiple-jobs box, dependents and extra withholding — change the federal tax withheld from each 2026 paycheck.AI Tax RiskEstimate the IRS accuracy-related penalty, failure-to-pay penalty and interest you could owe if an AI tool understates your US federal tax bill.AMT CalculatorEstimate your 2026 US Alternative Minimum Tax: exemption after phaseout, tentative minimum tax at 26%/28%, and any AMT owed above your regular tax, by filing status.Biden Tax PlanSee how your US federal tax could change under Joe Biden's 2020 campaign tax plan — top rate, capital gains, Social Security and Child Tax Credit — vs 2021 law.Alabama TaxEstimate your Alabama state income tax on Form 40: taxable income, tax owed, and your effective and marginal rate, using the AL standard deduction and exemptions.