India currently gives taxpayers a genuine choice between two tax regimes, and which one works out better isn't universal — it depends entirely on your specific numbers, particularly how many deductions you're actually able to claim.
Here's the core trade-off. The old regime offers lower headline rates only after you subtract various deductions — 80C investments, HRA if you rent, home-loan interest, and others — meaning your effective tax can be quite low if you're claiming several of these. The new regime offers lower rates upfront but strips away most of those deductions, meaning your taxable income is taxed more directly, with fewer reductions along the way.
The deciding factor, practically: if you have substantial deductions to claim — a home loan, significant 80C investments, HRA — the old regime often comes out ahead because those deductions meaningfully shrink your taxable income before the rate is even applied. If you have few or no major deductions — say, you don't rent, don't have a home loan, and aren't investing heavily in 80C instruments — the new regime's lower rates upfront often win simply because there's nothing to deduct anyway.
The practical habit: before filing each year, actually calculate your tax liability under both regimes using your real numbers — your specific deductions, your actual income — rather than assuming one is generally better. The right answer varies by household, and sometimes even year to year as your deductions change, so it's worth the ten minutes of comparison rather than defaulting to whichever regime you used last time.