Accurate income tax, country by country
Tax systems vary enormously, so CalcNow builds a dedicated calculator for each country instead of a one-size-fits-all estimate. Each one uses the latest published rates and reliefs:
- United States — 2025 federal brackets by filing status, standard or itemized deduction, plus Social Security and Medicare (FICA).
- India — FY 2025-26 New and Old Regimes side by side, with 80C/80D/HRA/home-loan deductions, the §87A rebate and 4% cess.
- United Kingdom — 2025/26 income tax (England/Wales/NI or Scotland), the personal-allowance taper, National Insurance and student loans.
Frequently asked questions
Which countries are supported?
We have detailed income tax calculators for the United States (federal + FICA, 2025), India (New vs Old Regime, FY 2025-26) and the United Kingdom (income tax, National Insurance and student loans, 2025/26). More countries will follow.
Why a separate calculator per country?
Income tax rules differ completely between countries — brackets, allowances, deductions, surcharges and payroll taxes. A dedicated calculator for each lets us model the real rules accurately rather than a generic approximation.
Do I have to pick my country manually?
No — we detect your location and highlight your country's calculator automatically. You can still open any of the others.
Estimates for informational purposes only and not tax advice. Verify with the official tax authority or a professional.