Old vs New Tax Regime: Complete Comparison for FY 2025-26

Every year at tax-declaration time, the same question comes up: old regime or new regime? Pick wrong and you can overpay by ₹10,000–₹50,000. This guide compares both for FY 2025-26 and gives you a simple rule to decide.

The core difference

• New Regime — lower slab rates, but you give up almost all deductions (80C, HRA, LTA, etc.). Simpler, and the default since FY 2023-24.
• Old Regime — higher slab rates, but you can claim deductions that reduce your taxable income. Rewards people who invest and pay rent.

New Regime slabs (FY 2025-26)

1. 1Up to ₹3,00,000 — Nil
2. 2₹3,00,001 to ₹7,00,000 — 5%
3. 3₹7,00,001 to ₹10,00,000 — 10%
4. 4₹10,00,001 to ₹12,00,000 — 15%
5. 5₹12,00,001 to ₹15,00,000 — 20%
6. 6Above ₹15,00,000 — 30%

Thanks to the Section 87A rebate, income up to ₹7 lakh is effectively tax-free under the New Regime. Add the ₹75,000 standard deduction and a salaried person earning up to ~₹7.75 lakh can pay zero tax.

When the Old Regime wins

The Old Regime makes sense when your total deductions are large. The break-even is roughly ₹3.75 lakh of deductions — claim more than that and the Old Regime usually saves you money. You can get there with:

• ₹1,50,000 under Section 80C (PPF, ELSS, EPF, life insurance, home-loan principal)
• HRA exemption if you pay rent (often ₹1–2 lakh in metros)
• ₹50,000 NPS under 80CCD(1B)
• Home-loan interest up to ₹2,00,000 under Section 24
• Health insurance premium under 80D

A simple rule of thumb

If your annual deductions (80C + HRA + home loan + others) add up to more than ₹3.75 lakh, the Old Regime usually wins. If they are below that — or you do not invest or pay rent — the New Regime is simpler and cheaper.

But rules of thumb only get you close. The right move is to compute tax under both regimes with your actual numbers and pick the lower one.

Things people get wrong

• Forgetting the standard deduction — ₹75,000 under the New Regime, ₹50,000 under the Old. Both salaried defaults.
• Assuming the New Regime is always better — for high earners with a home loan and full 80C, the Old Regime frequently wins.
• Not switching when life changes — salaried taxpayers can choose afresh each year. Buying a house or starting rent can flip the answer.

Once you know your take-home, make sure your next pay rise is bigger than the tax you save. The fastest way to do that is a stronger resume — build one free and land a better offer.