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Global income tax calculator

1. 1CF
   Calculator for US individual income tax, from 1970-present▲497

   I wanted to share a simple web app I created recently, which lets you estimate income taxes owed in the US: https://taxsim.app All the calculations occur directly in the browser, and are powered by a Fortran program that has been converted to WASM using emscripten. This calculator was originally developed in the 1970s [1] by the non-profit National Bureau of Economic Research. NBER has been maintaining this F77 codebase for the last 50 years, and uses it primarily for academic research on tax policy. The Fortran source code itself is over 1MB of text, because it codifies both…

   2022

2. 2
   Tax Atlas▲3

   Income tax math for the US, UK, India, Canada & Australia.

   May 2026 · taxatlas.app

3. 3
   HivePayroll Calculate Income Tax▲76

   Calculate income tax on your earnings in a few simple steps

   2022

4. 4IT
   Income Tax Calculator▲64

   2015 · incometaxcalculator.net.in

5. 5
   Global Tax App▲2

   Calculate taxes & compare takehome pay across 50+ countries

   19d ago · globaltaxapp.com

6. 6
   Taxily▲84

   Unlock your finances with our suite of finance calculators

   2022

7. 7
   Global Tax Calculator▲1

   “No guesswork—just clear tax numbers.”

   Feb 2026 · calculatortoolnation.com

8. 8
   Paycheck Calculator▲77

   Easily determine your after-tax income

   2019

9. 9
   Canadian Tax Calculator▲2

   Calculate and compare your total tax rate

   6d ago · total-tax.ca

10. 10
    Global Tax Calculator▲5

    See what you'll actually take home in 140+ countries

    Dec 2025

11. 11
    RemoteTaxCalc

    Compare your real take-home pay across 10 countries.

    Mar 2026 · remotetaxcalc.com

12. 12
    paycalceu▲6

    Free salary, tax & finance tools for 28 European countries

    Jul 2026 · paycalceu.com

13. 13
    Global Salary Calculator 2025▲1

    Compare net salary, taxes & take-home pay worldwide

    5d ago · salary-calculator-world.web.app

14. 14
    Take Home Pay by City▲33

    Compare salaries, tax, & living costs globally

    2025

15. 15
    Wealth Calculator Hub▲4

    Free financial calculators for UK, US, Canada, India & Aus

    Jun 2026 · wealthcalculatorhub.com

16. 16
    SalaryPeel▲6

    See every layer. Own your paycheck.

    Jun 2026 · salarypeel.com

17. 17
    oneshekel.com

    Free UK & US income tax calculator.

    Jun 2026 · oneshekel.com

18. 18
    NomadTaxCalc▲4

    Global tax calculator for digital nomads & expats

    Jul 2026 · nomadtaxcalc.com

19. 19
    Ireland Income Tax Calculator▲2

    Ireland Tax Calculator — Accurate Income & PAYE Estimator

    Nov 2025

20. 20
    US Tax Calculator 2026▲5

    2026 US tax calculator: federal, state & self-employment

    Jul 2026 · us-tax-calculator.com

21. 21
    Pay2Tax — Salary Tax Calculator▲2

    Pay2tax — See your real salary

    Nov 2025

22. 22
    Finance Tools Hub▲4

    Financial clarity for life's big decisions.

    Jun 2026 · financetoolshub.net

23. 23
    PayCalcHub▲5

    Take-home pay calculators for all 50 US states. Always free.

    Jul 2026 · paycalchub.com

24. 24
    Money Tools Global▲3

    See your true take-home pay in 15+ global cities.

    Feb 2026 · moneytoolsglobal.com

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