Old vs New Tax Regime FY 2025-26: The ₹15 Lakh+ Breakeven

Your employer picked a tax regime for you back in April, and that choice ran your TDS all year. It does not decide your final tax. When you file your FY 2025-26 return before 31 July 2026, you can switch to whichever regime is cheaper — and for a salary above ₹15 lakh, that switch is worth ₹50,000 to ₹1 lakh a year. Most people guess the answer, and most guess it wrong.

Summary

"Deductions" here means your old-regime claims beyond the ₹50,000 standard deduction — Section 80C, 80CCD(1B), 80D, HRA, and home-loan interest added together. If your total clears the right-hand column, the old regime is cheaper. If it does not, the new regime wins.

Why the "₹5.4 lakh breakeven" everyone quotes is wrong for you

The 87A rebate stops mattering above ₹12 lakh

Under the new regime, the Section 87A rebate makes income up to ₹12 lakh completely tax-free (a rebate of up to ₹60,000). Once your taxable income crosses ₹12 lakh, that rebate disappears entirely. So for anyone earning ₹15 lakh or more, the regime decision has nothing to do with the rebate headlines — it is pure deduction arithmetic. The question is only this: are your old-regime deductions large enough to beat the new regime's lower slab rates?

The breakeven rises with income, then caps near ₹8 lakh

The ₹5.43 lakh breakeven figure that floats around tax blogs is only true at roughly ₹15 lakh of salary. Push your income to ₹20 lakh and you now need ₹7.08 lakh of deductions before the old regime pulls ahead. At ₹25 lakh and above, the bar sits near ₹8 lakh and stops climbing — because by then both regimes tax your top rupee at 30%, so extra income changes nothing.

The reason is structural. The new regime spreads income across a 5%, 10%, 15%, 20%, and 25% ladder all the way up to ₹24 lakh before the 30% rate begins. The old regime jumps straight to 30% above just ₹10 lakh. On top of that, the new regime gives salaried filers a ₹75,000 standard deduction versus ₹50,000 in the old one. That ₹25,000 head start, plus the gentler ladder, is what you have to overcome with deductions — and it adds up fast.

The deductions that actually count toward that ₹8 lakh

Section 80C and 80CCD(1B): up to ₹2 lakh

EPF, ELSS, PPF, life-insurance premiums, and home-loan principal all compete for one ₹1.5 lakh cap under Section 80C. The National Pension System adds a separate ₹50,000 under Section 80CCD(1B). Maxed out, this block is worth ₹2 lakh — a quarter of the ₹8 lakh you would need at ₹25 lakh income.

HRA under Section 10(13A): usually the biggest single block

For a metro renter on a ₹12-14 lakh basic salary, the HRA exemption can run ₹2-3 lakh a year. This one line is what pushes genuinely high rent-payers toward the old regime. If you own your home instead of renting, the equivalent lever is the ₹2 lakh deduction on home-loan interest under Section 24(b).

Section 80D: ₹25,000 to ₹75,000

Health-insurance premiums for yourself, family, and parents fall under Section 80D, worth ₹25,000 to ₹75,000 depending on ages.

Stack all of these and a typical ₹25 lakh earner still lands near ₹4.5-5 lakh of deductions — well short of the ₹8 lakh bar. That gap is exactly why the new regime now wins for most ₹15 lakh-plus salaried filers, even those who feel like they "claim a lot."

Real example: Salaried, ₹25 lakh CTC, Bengaluru renter

This filer claims ₹1.5 lakh under 80C, ₹50,000 of NPS, ₹25,000 of health premium, and a ₹2.4 lakh HRA exemption — a realistic, well-optimised stack. The new regime is still cheaper by ₹1,04,520 a year. To flip the result, they would need to find another ₹3.3 lakh of deductions, which in practice means a home loan or far higher rent. Most cannot, so they should file under the new regime.

How to switch at filing — no Form 10-IEA needed

Here is the part employers never tell you. If you have only salary income — no business or profession — you do not file Form 10-IEA to choose the old regime. Inside ITR-1 or ITR-2 you simply select "opting out of the new tax regime," and you can make that choice fresh every single year, as long as you file on or before the Section 139(1) due date of 31 July 2026.

So the regime your employer used for TDS is just a cash-flow setting, not a final decision. If they defaulted you into the new regime but the old one is cheaper, claim the old regime when you file and the excess TDS comes back as a refund. If they ran the old regime but the new one wins, switch the other way. Miss the 31 July deadline, though, and a belated return locks you into the new regime and adds a Section 234F late fee of up to ₹5,000.

What to do this week

1. Pull your Form 16 and add up your real old-regime deductions — Section 80C, 80CCD(1B), 80D, HRA under 10(13A), and any home-loan interest under Section 24(b).
2. Compare that total against your gross-salary row in the table above. Below the breakeven, file under the new regime; above it, the old regime saves you more.
3. If the cheaper regime is not the one your employer used for TDS, select it directly inside ITR-1 or ITR-2 — no Form 10-IEA for salary-only income.
4. File before 31 July 2026 to keep your right to choose and to avoid the Section 234F fee.

The honest answer for ₹15 lakh-plus earners

For most salaries above ₹15 lakh, the new regime now wins unless you are carrying a home loan or paying serious metro rent on top of a fully-used 80C and NPS. Do not assume the old regime is better just because you "have deductions" — run the breakeven before you file, because the difference is often a full month's take-home pay.

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