BEST PAYCHECK CALCULATOR
About Best Paycheck Calculator
Best Paycheck Calculator is a free informational website that helps employees estimate gross-to-net pay across all 50 US states.
What the calculator does
Each state page combines the 2026 federal withholding engine with a separate state module. The result identifies federal income tax, Social Security, Medicare, state income tax, local tax where supported, mandatory employee-funded state programs, and user-entered deductions.
How the site is maintained
Federal configuration is versioned by tax year. State rates, sources, payroll programs and review dates are stored separately so a change in one state does not require editing every page.
Accuracy and limitations
This site provides estimates. It is not an employer payroll system and does not replace official withholding tables, payroll records or professional advice. The 2026 build separates states into verified zero-tax methods, published employer-formula methods, and official annualized methods. States using an annualized method provide certificate adjustments and an exact paycheck override rather than presenting an inferred rate as exact employer withholding.
Sources and review
Primary sources include the IRS and official state revenue, labor, leave and payroll agencies. The state verification matrix records the method, responsible source and review date used for each module.
Testing and corrections
Automated tests check all 50 state modules, page metadata, internal links, calculation boundaries and selected official publication examples. Suspected data issues can be reported through the contact page with the controlling official source.