Old vs new tax regime: which is better?

The old regime is the historical Indian income tax structure: relatively higher slab rates, offset by a long list of exemptions and deductions that reduce your taxable income before the rates are applied.

The new regime, introduced in 2020 and made the default from assessment year 2024-25, applies lower rates across more slabs but removes almost all of those deductions. The bargain is explicit: simpler and lower, in exchange for giving up the subtractions.

Both regimes tax the same income at the same time. Neither is a scheme you enrol in permanently — for a salaried person it is a choice made afresh each year at filing.

The new regime is not simply 'the lower one'. Whether it wins depends entirely on how much you would have subtracted under the old regime. Someone claiming nothing is better off under the new regime; someone claiming a great deal may not be.

Because slab rates, the rebate threshold, the standard deduction and deduction limits are revised in most Budgets and take effect from 1 April, this page deliberately does not quote figures. The structure is stable; the numbers are not.

The two that most often decide the answer are HRA and home loan interest on a self-occupied property, because they tend to be large. Someone renting in Mumbai or Bengaluru on a substantial salary, or paying meaningful home loan interest, is the classic old-regime case.

The employer's NPS contribution under section 80CCD(2) survives in both regimes, which makes it unusually valuable — it is one of the few ways to reduce taxable income under the new regime, and it is worth asking your employer whether they offer it as part of the salary structure.

Note the asymmetry on home loans: interest on a let-out property remains deductible against rental income in both regimes, while interest on the home you live in does not survive the switch.

Open the tax calculator on incometax.gov.in — it computes both regimes side by side for the relevant assessment year with current slabs.

Enter your actual gross income and your actual deductions. Not the maximum permitted — the amount you genuinely claim, evidenced by rent receipts, premium payments and interest certificates. Overstating this is how people talk themselves into the wrong regime.

Compare the two tax figures. The difference is usually clear enough that no further analysis is needed.

If the numbers are close, favour the new regime. Equal tax with far less compliance, no investment lock-ins and no documentation to preserve is a better outcome than equal tax with all of it.

Do this at the start of the financial year, not at filing. Your employer asks for a regime declaration for TDS purposes, and declaring the wrong one means over- or under-withholding all year, corrected only at filing.

Redo it each year. Rates change with every Budget, and your circumstances change — a home loan, a move to a rented house, a child's school fees or the end of a loan can each flip the answer.

Salaried taxpayers and others without business income can choose their regime each year at the time of filing, and can switch back and forth without restriction. The declaration made to your employer during the year affects TDS only, not your final choice — you may file under a different regime than you declared, and the tax will be reconciled.

Taxpayers with income from business or profession are restricted. They must file Form 10-IEA to opt out of the new regime, and having opted out and back in, the ability to switch again is limited. Get advice before switching if you have business income.

The regime is chosen when filing the return for the year. To use the old regime, the return must be filed within the due date — a belated return generally cannot claim the old regime, which is a costly and often unnoticed consequence of missing the deadline.

Neither regime affects the requirement to file, the ITR form you use, or your eligibility for a refund. It changes only the computation of tax.

Certain income-specific provisions sit outside the regime choice entirely: capital gains are taxed under their own rates, and set-off and carry-forward of losses follow their own rules.

If you get it wrong, a revised return filed within the permitted window can change the regime, provided the original was filed on time.