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Universal Tax Calculator
Choose the type of tax you want to estimate. The form changes to show only the fields needed for that calculation.
Enter your own numbers. Federal U.S. estimates use published 2026 parameters; other tax types use rates you supply. Nothing is sent to an AI service.
Your tax estimate
Ready to calculate
Choose a tax type, enter the requested details, and select Calculate tax.
Estimates only. Local rates are not looked up automatically.
One calculator for different tax questions
The Universal Tax Calculator changes its input fields for each type of estimate, so you only see the information needed for that calculation.
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Income and payroll
Estimate 2026 U.S. federal regular income tax, employee payroll taxes, or self-employment tax using published federal parameters.
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Capital gains
Estimate U.S. federal tax on a positive capital gain using the holding period, filing status, and other taxable income.
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Sales, VAT / GST
Calculate tax on a purchase using the combined rate you enter, including the option to remove tax from a tax-inclusive price.
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Property and custom rates
Estimate annual property tax with a supplied local rate, or calculate another percentage tax using your own rate.
How the calculation works
U.S. federal income-tax estimates use 2026 ordinary income brackets and the standard deduction for the selected filing status, unless you enter an itemized deduction amount. Payroll and self-employment modes use the 2026 Social Security wage base and applicable Medicare thresholds. Capital-gains estimates apply the 2026 U.S. federal long-term preferential-rate thresholds or ordinary rates for short-term gains.
Sales tax, VAT / GST, property tax, and custom-rate calculations use rates you enter. The calculator does not automatically identify your country, state, municipality, or tax jurisdiction.
Official references
- IRS Revenue Procedure 2025-32: 2026 tax brackets, standard deduction, and capital-gains thresholds
- Social Security Administration: 2026 contribution and benefit base
- IRS: Self-employment tax overview
Important assumptions and limitations
This is an educational estimate, not tax preparation or legal advice. Federal income-tax results do not model every deduction, credit, special deduction, alternative minimum tax, net investment income tax, state tax, local tax, or individual filing circumstance. The capital-gains estimate excludes state and local taxes and the net investment income tax. Payroll and self-employment estimates do not replace a paycheck withholding calculation. Rate-based modes use the user-supplied rate and currency and do not confirm the rate is correct for a particular transaction or location. Verify important results against current official guidance or a qualified tax professional.