Income tax calculator
Old versus new regime, side by side
Worked example
Using the default values, income tax calculator gives a new regime is cheaper of ₹97,500.
| Item | Value |
|---|---|
| Cheaper regime | New |
| You save | ₹1,05,300 a year |
| Which is | ₹8,775 a month |
| Already paid | ₹0 |
| Still due | ₹97,500 |
| 15 June — 15% | ₹14,625 |
| 15 September — 45% to date | ₹43,875 |
| 15 December — 75% to date | ₹73,125 |
| 15 March — the balance | ₹97,500 |
What you need
- Annual gross salary
- Income type
- Investments under 80C
- Health insurance under 80D
- HRA exemption claimed
- Home loan interest
- Extra NPS under 80CCD(1B)
- Employer NPS under 80CCD(2)
- TDS / advance tax paid
Questions
Which regime should I choose?
The new regime wins unless your deductions are large. Enter your actual 80C, 80D, HRA and home loan interest above and the calculator shows both totals side by side.
What is marginal relief?
Where crossing a threshold would make your tax rise by more than the extra income, relief caps the increase at the additional income. Without it, earning one rupee more above ₹50 lakh could cost tens of thousands in surcharge.
Do I need to pay advance tax?
If your tax after TDS exceeds ₹10,000 for the year, yes, in four instalments by 15 June, 15 September, 15 December and 15 March. Interest under sections 234B and 234C applies if you fall short.
Important
NA means the deduction simply does not exist in the new regime — that is the trade for its lower rates and larger standard deduction. Tax year 2026-27, the first under the Income-tax Act 2025; slabs, rebate and both regimes carry over unchanged, with the new regime as the default. Surcharge starts above ₹50 lakh at 10%, ₹1 crore at 15%, ₹2 crore at 25%, and ₹5 crore at 37% on the old regime, capped at 25% on the new. Marginal relief is applied at every threshold and at the ₹12 lakh rebate cliff. Capital gains, house property and business income are not modelled.