Category
Calculators
Free browser calculators for ROI, salary, loans, and income tax—by country and US state. No signup; your numbers stay on your device.
Country and region support
The income tax calculator covers the United States (all 50 states + DC with filing status), the United Kingdom, Canada, Türkiye, and a custom flat-rate mode for other countries. US estimates split federal brackets from an approximate state rate.
How US state taxes work here
States like Texas and Florida have no state income tax on wages; California and New York use higher effective rates. We apply a planning rate per state on taxable income after the federal standard deduction—local city taxes and credits are not included.
Privacy and disclaimers
All math runs client-side. Outputs are educational estimates—not tax, legal, payroll, or lending advice. Verify with official calculators, your accountant, or IRS/state guidance before filing.
Tools in this category
Income Tax Calculator
Estimate income tax by country—US states, UK, Canada, Türkiye, or custom rate.
Open tool →
Salary Calculator
Estimate take-home from gross assumptions.
Open tool →
Loan Calculator
Monthly payment estimates from principal, APR, and term.
Open tool →
ROI Calculator
Estimate return on investment from cost and gain.
Open tool →
FAQ
Does the US calculator include federal and state tax?
Yes. Pick a state and filing status (single, married filing jointly, or head of household). Federal tax uses simplified IRS-style brackets; state tax uses an approximate effective rate for that state.
Why doesn’t the salary calculator show states?
The salary tool uses one flat tax % for speed. For US state + federal breakdown, use the Income Tax Calculator and link results to salary planning.
Are FICA or National Insurance included?
No. Payroll taxes (US FICA, UK NI, etc.) are excluded so you can see income tax components separately.