Income
Income Tax Calculator
A full FY 2025-26 income-tax computation, slab by slab, for both regimes side by side — standard deduction, the Sec 87A rebate with marginal relief, 4% cess, and every deduction that still applies.
Last updated 6 September 2026 · Free · No sign-up · Nothing you type leaves your browser
Your income
Salary, rent, interest and any other income for the year, before any deduction.
Only changes the old regime: 60+ raises the exemption to ₹3L, 80+ to ₹5L.
Only salary or pension income earns the standard deduction.
Employer NPS contribution (Sec 80CCD(2))
The only Chapter VI-A deduction the new regime keeps.
Caps how much of the employer's contribution qualifies.
Tax payable, new regime
₹0
On a taxable income of ₹11.3 L, including a 4% health & education cess. That is an effective rate of 0.0% of your gross income.
Standard deduction
₹75,000
Chapter VI-A deductions
₹0
Tax before cess
₹0
Net annual income
₹12 L
Slab by slab
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Two regimes, one honest comparison
Since FY 2023-24, every taxpayer chooses between the new regime (Sec 115BAC) and the old one every year, and the right answer depends entirely on your own numbers — income, deductions, and now, after the 2025 budget widened the new regime's slabs considerably, a comparison that used to favour the old regime for most salaried taxpayers has flipped for many of them. This tool runs both regimes on the same income and deductions and shows which one actually costs less, rather than relying on last year's rule of thumb.
What is modelled, and what is not
The engine behind this page computes FY 2025-26 (AY 2026-27) tax exactly: slab-by-slab tax in both regimes, the age-based exemption the old regime gives senior and super senior citizens, the standard deduction, the Sec 87A rebate with marginal relief at both thresholds, 4% health and education cess, and — old regime only — Sec 80C, 80CCD(1B) and 80D, plus Sec 80CCD(2) employer NPS contributions in both regimes. It does not model capital gains taxed at special rates, HRA exemption, home loan interest under Sec 24(b), or the surcharge that applies to very large incomes — for most salaried taxpayers without those specific circumstances, the numbers above should match a filing closely.
Once you know your net income, feed it into the tax page inside your plan to see how it changes your retirement date, or check the retirement corpus calculator directly against your take-home pay.
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Frequently asked questions
Which regime should I pick?
Whichever comes out cheaper on your actual numbers, which is exactly what the comparison callout above the calculator shows. Since the 2025 budget widened the new regime’s slabs and raised its rebate to Rs 12L, it now wins for most salaried taxpayers even before counting deductions — the old regime is really only competitive if you have substantial Sec 80C, 80D or NPS deductions, or other old-regime-only breaks this calculator does not model, such as home loan interest.
Is Rs 12 lakh really tax-free under the new regime?
For a salaried taxpayer, gross salary up to about Rs 12.75L is effectively tax-free: the Rs 75,000 standard deduction brings taxable income down to exactly Rs 12L, and the Sec 87A rebate zeroes out the tax on that. Go one rupee over and marginal relief kicks in, so the tax on the extra income is capped at the amount by which you exceed the threshold — it never suddenly jumps to the full slab-rate tax on the whole amount.
What is marginal relief, exactly?
Without it, earning Rs 1 more than the rebate threshold could mean paying tax on the entire income at slab rates — tens of thousands of rupees of tax for one extra rupee earned. Marginal relief prevents that: it caps the tax (including cess) on income just over the threshold at the amount by which income exceeds it, so an extra rupee of income never leaves you worse off after tax. It applies to both regimes’ rebate thresholds.
Why doesn’t this show HRA or home loan interest?
Both are real, old-regime-only breaks this calculator does not model — HRA exemption depends on rent actually paid and the city you live in, and home loan interest (Sec 24b) depends on the loan itself. If either applies to you in a meaningful way, treat the old-regime figure here as an upper bound: your actual old-regime tax would likely be lower.
Does Sec 80CCD(2) really work under the new regime?
Yes — it is the one Chapter VI-A deduction the new regime still allows. It only covers what your employer puts into your NPS account, not your own contribution, and it is capped at 14% of Basic + DA for every employee under the new regime (the old regime keeps a narrower 10% cap for private-sector employees, 14% for government ones).