Frequently asked questions

Quick answers about the calculator, our methodology, and your privacy.

What does TrueTaxRate actually measure?

Your total annual tax burden as a share of gross income — federal income, state and local income, payroll, sales, property, vehicle, and gas taxes combined.

Do my inputs leave my browser?

No. Everything is computed locally on your device. We never see your numbers.

How accurate is the estimate?

It's a transparent estimate using public 2025 tax data. Entering W-2 figures and a spending CSV will make it more precise.

Why include payroll tax?

Payroll taxes (Social Security and Medicare) come out of every paycheck. Excluding them would understate what you actually pay.