How to use Income Tax Calculator

The short answer

To calculate income tax in India for FY 2026-27, enter your income and deductions: ClickZM applies the new and old regime slabs, standard deduction, section 87A rebate, surcharge and 4% cess, and tells you which regime costs less.

It runs in your browser. What you enter is not uploaded.

How to use it

Type or paste your input into the Income Tax Calculator.

Choose any options you need.

See the result update instantly.

Copy the result or download it.

How the result is worked out

The calculator runs both regimes from the same income. It subtracts the standard deduction (and, under the old regime, the deductions you enter), applies the slab rates, takes off the section 87A rebate where you qualify with marginal relief just above the limit, then adds any surcharge and the 4% health and education cess.

It is an estimate for a resident individual. Capital gains and other income taxed at special rates are not included, so treat it as a comparison of the two regimes and file using the figures in Form 16 and on the income tax portal.

Limits worth knowing

Is income up to ₹12 lakh tax-free? Under the new regime, yes for salaried people, thanks to the ₹75,000 standard deduction and the 87A rebate; up to ₹12.75 lakh of salary pays no tax.

Which regime is better? The old regime only wins if your deductions (80C, HRA, home-loan interest) are large.