Old vs New Tax Regime for Salaried Income Above ₹12 Lakh
"Income up to ₹12 lakh is tax-free" is the headline — but it's a threshold, not a ceiling that protects everything below it. Cross ₹12,00,000 taxable income and you start paying tax on the amount above the line, softened by marginal relief. Here's exactly what that looks like in rupees.
Old vs New Tax Regime Calculator
Enter your own income to see your exact tax under both regimes.
The short answer
Just above ₹12 lakh, your tax is small, not sudden. On a ₹13,00,000 salary, new-regime tax works out to about ₹26,000 — a fraction of what the raw slabs would suggest, thanks to marginal relief. The old regime has no such cushion at its own ₹5 lakh threshold.
Three income levels, worked out
All three examples assume a salaried employee with no other deductions claimed — the cleanest way to isolate what crossing ₹12 lakh actually costs.
| Gross salary | New regime tax | Old regime tax | New regime saves |
|---|---|---|---|
| ₹13,00,000 | ₹26,000 | ₹1,95,000 | ₹1,69,000 |
| ₹13,45,588 | ₹73,412 | ₹2,09,223 | ₹1,35,811 |
| ₹15,00,000 | ₹97,500 | ₹2,57,400 | ₹1,59,900 |
₹13,45,588 is a specific number for a reason — it's where new-regime marginal relief stops making a difference (explained below). Note the saving doesn't grow in a straight line from row to row; it dips at the marginal-relief boundary before climbing again, because that's exactly the zone where relief is doing the most work.
Why ₹13,00,000 salary owes only ₹26,000, not ₹73,000
At ₹13,00,000 gross, taxable income after the ₹75,000 standard deduction is
₹12,25,000 — ₹25,000 above the ₹12,00,000 rebate threshold. Raw slab tax on
₹12,25,000 would be ₹63,750. But marginal relief caps tax at no more than the excess
over the threshold: min(₹63,750, ₹25,000) = ₹25,000. Add 4% cess and you
get ₹26,000. This is the whole point of marginal relief — it stops a ₹25,000
move above the line from triggering a disproportionate tax bill.
Where marginal relief stops mattering
Marginal relief only reduces your tax while raw slab tax is higher than the excess over ₹12,00,000. Past taxable income of about ₹12,70,588 (₹13,45,588 gross), ordinary slab tax is already lower than that excess, so the cap never activates — you simply pay the slabs as calculated, no relief involved. This is why the "saves" column in the table above dips at exactly that row: it's the point where the relief-driven discount is at its largest relative to income, just before slab tax overtakes it.
The old regime has no equivalent cushion
The old regime's ₹12,500 rebate is a hard cliff at ₹5,00,000 taxable income — cross it by ₹1 and the full rebate disappears at once, unsmoothed. There's no old-regime parallel to the new regime's marginal relief. Combined with the old regime's lower ₹2,50,000 tax-free threshold and 30% rate starting at ₹10,00,000 (vs ₹24,00,000 in the new regime), this is why the gap in the table above is so wide with no deductions claimed.
What changes this comparison
Everything above assumes no old-regime deductions. If you have a home loan, maxed-out 80C, or significant HRA exemption, the gap narrows — see old vs new regime with a home loan for exactly how much. And if you're not salaried, the standard deduction itself doesn't apply — see old vs new regime for freelancers.
FAQ
No. On a ₹13,00,000 salary (taxable income ₹12,25,000 after the ₹75,000 standard deduction), your new-regime tax works out to about ₹26,000 — a small fraction of your income, not a sudden jump to full slab tax. The 87A rebate simply stops applying above ₹12,00,000 taxable income; it does not claw back what it gave you below that line.
Marginal relief caps your tax at no more than the amount by which your taxable income exceeds ₹12,00,000. So at ₹12,10,000 taxable income, tax is capped at ₹10,000 (the excess), not the ₹61,500 the slabs alone would produce. This relief tapers off as income rises — above roughly ₹12,70,588 taxable income, ordinary slab tax is already lower than the relief cap, so it stops making a difference.
Not with little or no deductions — at ₹13L, ₹13.46L, and ₹15L gross salary with no other deductions claimed, the new regime wins by a wide margin in every case we checked (₹1,44,000–₹1,69,000 in tax saved). The old regime only becomes competitive once you factor in real deductions like a home loan or maxed-out 80C — see old vs new regime with a home loan for those numbers.
No — this is an important difference. The old regime's ₹12,500 rebate is a hard cliff at ₹5,00,000 taxable income: cross it by even ₹1 and the full rebate is gone at once, with no smoothing. Only the new regime has marginal relief.
Use the Old vs New Tax Regime Calculator — enter your gross income (and any deductions, if comparing the old regime fairly) to see both regimes' tax side by side.
Last verified: 12 Aug 2026
Source: incometax.gov.in — "Salaried Individuals for AY 2026-27" (https://www.incometax.gov.in/iec/foportal/help/individual/return-applicable-1). Not the site's general "New Tax vs Old Tax Regime FAQs" page, which is stale.
This is an indicative estimate for FY 2025-26 (AY 2026-27) based on the slabs, rebate, and marginal relief rules published on incometax.gov.in as understood at the time of writing. It does not cover every deduction or income type. Confirm your exact liability with a qualified tax professional before filing or making financial decisions.