Work out your income tax under both the new and old regimes for FY 2025-26, see which one costs you less, and get the slab-by-slab breakdown including rebate, surcharge, marginal relief and cess.
Step 1
Enter your income
Your gross salary before any deduction, plus any interest, rent or other income taxed at slab rates.
Step 2
Add your old-regime deductions
80C, 80D, NPS, home loan interest and HRA exemption. These only count under the old regime, so leave them at zero if you have none.
Step 3
Compare the two regimes
The calculator runs both regimes on the same inputs and shows which one leaves you with more, and by how much.
New regime is cheaper
₹97,500
Choosing the new regime saves you ₹1,05,300 a year against the old regime.
Under the old regime you would pay ₹2,02,800, an effective rate of 13.5% against 6.5%.
Tax is built up in five steps. Each one depends on the result of the last, which is why a small change in income near a threshold can move the final figure by a surprising amount.
Tax = ((Slab tax − 87A rebate) + Surcharge) × 1.04Gross total income minus deductions
Salary and other income, less the standard deduction and — in the old regime only — Chapter VI-A deductions and the HRA exemption.
Rate applied band by band
Each slab rate applies only to the income falling inside that band, not to your whole income. This is why your average rate is always below your top slab rate.
Section 87A
Up to ₹60,000 when taxable income is ₹12 lakh or less in the new regime, or ₹12,500 up to ₹5 lakh in the old regime.
Levy on higher incomes
10% above ₹50 lakh, 15% above ₹1 crore and 25% above ₹2 crore. The old regime adds a 37% band above ₹5 crore; the new regime caps at 25%.
Health and education cess
4%, charged on tax plus surcharge after any marginal relief has been applied.
Marginal relief exists so that crossing the ₹12 lakh, ₹50 lakh, ₹1 crore, ₹2 crore or ₹5 crore mark can never cost more in tax than the extra income earned. It caps tax plus surcharge, and the 4% cess is then charged on the capped figure — which is why the effective marginal rate just above a threshold is 104% rather than 100%.
Answers about the income tax calculator.
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This tool is provided for educational purposes only. Results are estimates based on the values you enter and do not constitute financial advice.