Tax Calculator

Tax calculators help you estimate what you owe or get back — sales tax and VAT, income and withholding tax, and reverse-tax lookups. Popular tools include the Sales Tax Calculator, Reverse Sales Tax Calculator, VAT Calculator, and Federal Tax Withholding Calculator.

Enter your figures for a quick estimate, or open the Trending tab to see what's in demand this week. Every calculator is free and works on any device.

  • Vietnam Household Business Tax Calculator
    Estimate VAT and personal income tax for a Vietnamese household business under Decree 141/2026 and 253/2026 across four revenue bands.
  • Net Paycheck Calculator by State
    Estimate US state income tax with flat-rate, progressive bracket, or no-tax options. See your state tax, net income, and effective rate instantly.
  • Tax Deduction Savings Calculator: Marginal vs. Effective Rate
    Estimate how much tax a deduction actually saves you. Multiply your deduction by your marginal tax rate to see real savings and net cost.
  • Pass-Through Entity Tax Savings Calculator (S-Corp Salary vs Distribution)
    Estimate the self-employment tax you save with an S-Corp election (US). Compare reasonable salary vs distributions and the 15.3% SE tax avoided.
  • Tax Bracket Calculator (US)
    Estimate your 2026 US federal income tax by bracket. Get total tax, marginal & effective tax rates, and after-tax income for single or married filers.
  • Sales Tax vs Income Tax Deduction Calculator
    US calculator: compare deducting state income tax vs sales tax, add property tax, and apply the $10,000 SALT cap to find your itemized deduction.
  • Marginal Tax Rate Calculator
    Find your US federal marginal tax rate (2026 brackets) plus total tax and effective rate. Enter taxable income and filing status for instant results.
  • Roth Conversion Tax Calculator
    Estimate the federal income tax on a 401(k)/IRA-to-Roth conversion (US). Enter the amount converted and your marginal tax rate to see the tax owed.
  • HSA Tax Savings Calculator
    Estimate how much you'll save in taxes by contributing to a US Health Savings Account (HSA), including federal, state, and FICA payroll savings.
  • Break-Even Interest Rate Calculator
    Compare taxable vs tax-free yields. Find the taxable equivalent yield a taxable bond must earn to beat a tax-free municipal bond at your tax rate.
  • UK Student Loan Repayment Calculator
    Estimate your UK student loan repayments by plan (1, 2, 4, 5 or Postgraduate). Income above the threshold is repaid at 9% (6% for postgrad). 2026/27 rules.
  • Federal Tax Withholding (Percentage Method) Calculator (US)
    US IRS Pub 15-T percentage method calculator. Estimate federal income tax withheld per paycheck from gross wages, pay frequency, and W-4 filing status (2026).
  • Paycheck Tax Withholding Calculator (US W-4 Estimator)
    Estimate US federal income tax withheld from each paycheck. Free W-4 estimator using 2026 brackets and standard deduction by filing status.
  • Self-Employment Tax Calculator (US)
    Estimate US self-employment tax (Social Security 12.4% + Medicare 2.9%) on your net profit. 2026 rules with the 92.35% adjustment and SS wage cap.
  • Tax Refund Calculator (US)
    Estimate your 2026 US federal tax refund or balance due from your income and withholding using the standard deduction and IRS tax brackets.
  • Taxable Income Calculator (US)
    Free US taxable income calculator. Subtract the 2026 standard or itemized deduction and QBI from your AGI to estimate federal taxable income.
  • Marginal vs Effective Tax Rate Calculator
    Compare your marginal and effective federal income tax rates using 2026 US brackets. Enter taxable income and filing status to see total tax owed.
  • FICA Tax Calculator (US)
    Calculate your 2026 US FICA tax — 6.2% Social Security (up to the $184,500 wage base) plus 1.45% Medicare and the 0.9% additional Medicare surtax.
  • Taxable Social Security Benefits Calculator (US)
    US calculator: estimate how much of your Social Security benefits are taxable using IRS provisional-income thresholds (up to 85% taxable).
  • UK National Insurance Calculator
    Calculate your UK Class 1 employee National Insurance contributions for 2024/25 and 2023/24 from your annual gross salary, monthly and weekly.
  • Earned Income Tax Credit (EITC) Calculator
    Estimate your 2026 US Earned Income Tax Credit by filing status, qualifying children, earned income, and AGI. Free EITC calculator.
  • Property Depreciation Calculator
    Estimate annual real estate depreciation using the US MACRS straight-line method for residential (27.5 yr) and commercial (39 yr) property.
  • GST Percentage Calculator
    Free GST calculator to add or remove GST at any percentage. Enter an amount and rate to get the net price, GST amount, and gross total instantly.
  • Sales Tax Backed Out of Total Calculator
    Back out the sales tax from a tax-inclusive total. Enter the gross amount and tax rate to find the net price and the tax included.

Frequently asked questions

What taxes can I estimate here?

Sales tax and VAT (forward and reverse), income tax and take-home pay, withholding, and other common consumer and payroll taxes.

Are these estimates official tax figures?

No. They're estimates to help you plan. Tax rules, rates, brackets, and allowances vary by country, region, and year — confirm with your tax authority or a qualified tax professional before filing.

Are the rates up to date for my location?

Enter your own local rate where a tool asks for it. Built-in rates may not reflect the latest changes in your jurisdiction, so verify the current rate.

Are these calculators free and private?

Yes — free, no sign-up, and your inputs stay in your browser; nothing is logged or shared.

Which tax calculators are most popular?

The list is ordered by usage; the Trending tab shows what's rising this week.

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