Which tax regime saves more money on a ₹15 LPA salary — old or new?
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Compare old vs new tax regime for a ₹15 LPA salary under FY 2025–26 (Budget 2025) slabs. New regime tax is ~₹97,500 vs old regime ~₹2.57 L without deductions — new wins by ~₹1.6 lakh unless you claim ₹3.75 L+ of old-regime deductions.
Why Old vs New Comparison Matters at ₹15 LPA
At ₹15 LPA gross salary under FY 2025-26 (Budget 2025) rules, the new regime tax comes to about ₹97,500 (after ₹75,000 standard deduction, slab math, and 4% cess). The old regime — with only the ₹50,000 standard deduction and no other claims — produces a tax of about ₹2.57 lakh. That’s a ₹1.6 lakh annual gap in favour of the new regime for the average salaried person without big deductions.
For the old regime to break even with the new at ₹15 LPA, you need roughly ₹3.75 lakh of deductions: ₹1.5 lakh in 80C + ₹50K in 80CCD(1B) NPS + ₹1.25 lakh in HRA exemption (typical for ₹15,000-20,000 monthly metro rent) + ₹50K standard deduction. Add home loan interest deduction of up to ₹2 lakh and the old regime can pull meaningfully ahead.
The decision isn’t binary. Salaried employees can switch regimes every year at filing time. Business owners can only switch from old to new once; the choice locks. The calculator below lets you plug in your actual deductions and see the break-even.
The break-even is not a fixed number — it moves with your income. At ₹15 lakh the old regime needs roughly ₹3.75 lakh of deductions to draw level. Lower down the scale the new regime’s advantage is close to unassailable, because the ₹60,000 rebate under section 87A takes tax to nil up to ₹12 lakh of taxable income and no realistic set of deductions competes with paying nothing. Higher up, the old regime’s deductions have more to work against, so the calculation gets closer — but only if you actually claim them.
The deductions have to be real. The break-even figure assumes the full ₹1.5 lakh of 80C, a ₹50,000 NPS contribution under 80CCD(1B), and meaningful HRA. Most people who assume the old regime suits them have never added up what they genuinely claim. Do that first, with last year’s actual figures, before running any comparison at all.
Old vs New Regime Calculator
New regime: ₹75,000 standard deduction, FY 2025–26 slabs, and the section 87A rebate — nil tax up to ₹12 lakh taxable income, with marginal relief just above it. Old regime: ₹50,000 standard deduction plus the deductions you enter, and the ₹12,500 rebate up to ₹5 lakh. Both include 4% cess. Surcharge on income above ₹50 lakh is not applied.
What Actually Changes Between the Two at ₹15 Lakh
On the new regime your taxable income is ₹14.25 lakh after the ₹75,000 standard deduction. The slabs run nil to ₹4 lakh, 5% to ₹8 lakh, 10% to ₹12 lakh and 15% to ₹16 lakh, giving ₹93,750 before cess and ₹97,500 after. Nothing else is deductible except your employer's NPS contribution.
On the old regime the standard deduction is ₹50,000, so taxable income is ₹14.5 lakh against slabs of nil to ₹2.5 lakh, 5% to ₹5 lakh, 20% to ₹10 lakh and 30% above — ₹2,57,400 including cess with no deductions claimed. Every rupee of deduction you can prove reduces that figure at your marginal rate, which at this income is 30%.
So each ₹1 lakh of genuine deduction is worth about ₹31,200 to you, and you need roughly ₹3.75 lakh of them before the old regime catches up. Below that, the new regime wins; above it, the old regime pulls ahead.
One deduction crosses the divide. Your employer's contribution to NPS under section 80CCD(2) is available under both regimes — up to 14% of basic plus dearness allowance under the new regime. If you are choosing the new regime, that is the only tax shelter still open to you, and at ₹15 lakh it is worth asking your employer about.
How to Decide, and What People Get Wrong
Start from last year's return, not from a hypothetical. Add up what you actually claimed — 80C, 80D, HRA, home loan interest, NPS. If the total is comfortably under ₹3.75 lakh, the new regime is your answer at this income and the rest of the analysis is academic.
Remember the new regime is the default. You do not opt into it; you opt out. A salaried employee who wants the old regime must tell their employer before the start of the year, or TDS will be deducted on the new regime and the choice has to be made again at filing.
Salaried employees can switch every year. Business owners cannot. Someone with business income can move from old to new once, and cannot go back. That asymmetry deserves more thought than it usually gets, because it converts an annual decision into a permanent one.
Do not choose a regime and then buy products to justify it. The common error is deciding the old regime suits you, then acquiring an insurance policy each March to fill the 80C limit. A deduction is worth 30% of the amount; the product still costs you 100% of it. Buy things that are worth owning, then pick the regime that fits.