Every calculator on this page runs on official IRS figures -- the federal brackets, standard deduction, and Social Security wage base for the tax year it covers (2025 for the income tax tools, 2026 for the payroll tool). Each tool answers one specific question, and each shows the arithmetic behind its answer rather than just a number, so you can check the work or redo it by hand. Nothing you type is stored, and no login or email is required.
If you are not sure where to start, the income tax calculator is the general-purpose tool: it estimates the federal tax bill on a given income and filing status. The others narrow in on one piece of the picture -- what you will get back when you file, what a freelancer owes on top of income tax, what a stock or property sale costs, what a purchase costs after sales tax, or what a paycheck looks like after withholding.
Free Tax Calculators
Income Tax Calculator
Estimate your 2025 federal tax liability, effective rate, and marginal bracket based on income and filing status.
Open Calculator W-2 EmployeesTax Refund Calculator
Enter your income and withholding to see if you will get a refund or owe a balance when you file.
Open Calculator FreelancersSelf-Employment Tax
Calculate the 15.3% SE tax on net self-employment income and find your deductible half.
Open Calculator InvestorsCapital Gains Tax
Estimate tax on stock, real estate, or crypto sales — short-term vs. long-term rates side by side.
Open Calculator PurchasesSales Tax Calculator
Add sales tax to any purchase or back it out of a total price. Works with any rate for any state.
Open Calculator Take-Home PayPayroll Tax Calculator
Calculate actual take-home pay after federal income tax, Social Security, and Medicare withholding.
Open CalculatorWhich calculator answers your question?
"How much federal tax will I owe on $X?" -- Income Tax Calculator. It applies the standard deduction, runs the result through the seven brackets, and reports both your marginal rate (the rate on your next dollar) and your effective rate (total tax divided by income). A single filer earning $65,000 in 2025 has $49,250 of taxable income after the $15,750 standard deduction, owes about $5,750 in federal income tax, sits in the 22% bracket, and pays an effective rate of roughly 8.8%.
"Will I get a refund?" -- Tax Refund Calculator. It starts from the same tax estimate and subtracts what your employer already withheld from your paychecks. Withhold $7,500 against that $5,750 bill and the calculator shows a $1,750 refund; withhold $5,000 and it shows $750 owed.
"I'm self-employed -- what's the extra tax?" -- Self-Employment Tax Calculator. Freelancers and contractors pay both halves of Social Security and Medicare, 15.3% on 92.35% of net profit, on top of regular income tax. On $40,000 of net profit that is about $5,650 in SE tax, and roughly $2,825 of it is deductible when you compute income tax.
"What do I owe on a stock, crypto, or property sale?" -- Capital Gains Tax Calculator. Assets held a year or less are taxed as ordinary income; assets held longer get the 0%, 15%, or 20% long-term rates. The calculator shows both outcomes side by side so you can see what waiting to sell would save.
"What will this cost with tax?" -- Sales Tax Calculator. Enter the price and your combined state-plus-local rate, or work backward from a receipt total to find the pre-tax price. Rates for every state are on the state pages.
"What is my take-home pay?" -- Payroll Tax Calculator. It removes federal income tax withholding, the 6.2% Social Security tax, and the 1.45% Medicare tax from a paycheck at whatever frequency you are paid. A $2,500 biweekly paycheck for a single filer nets roughly $2,090 in 2026 before any state tax or benefit deductions.