Old vs New Tax Regime 2026: Which Should You Choose?

Which tax regime should you choose — old or new? If your total 80C/80D/HRA/home-loan-interest deductions add up to less than roughly ₹3.5-4 lakh, the new regime almost always wins on tax payable. Above that, the old regime starts closing the gap and can overtake it. That’s the entire decision in one sentence — the rest of this guide is the detail behind it, including exactly where that crossover point moves at higher incomes.

What actually changed

The new regime offers lower slab rates and a flat ₹75,000 standard deduction, with income up to ₹12 lakh effectively tax-free after the Section 87A rebate. What it doesn’t offer is almost every deduction the old regime built its higher rates around — no Section 80C, no 80D health insurance deduction, no HRA exemption, no home loan interest deduction under Section 24.

The deductions that only work in the old regime

The old regime’s higher tax rates are offset by deductions including:

• Section 80C — up to ₹1.5 lakh (PPF, ELSS, life insurance premiums, etc.)
• Section 80D — health insurance premiums (₹25,000, or ₹50,000 for senior citizen parents)
• HRA exemption — often the single largest deduction for renters (see our full HRA guide)
• Section 24 — home loan interest, up to ₹2 lakh for a self-occupied property

The crossover point

As a rough rule of thumb, once your total old-regime-only deductions (excluding the ₹50,000 old-regime standard deduction, which both regimes effectively have their own version of) cross somewhere around ₹3.5-4 lakh, the old regime typically starts winning despite its higher rates. Below that, the new regime’s lower rates usually come out ahead. But this threshold shifts with your income level, which is exactly why a rule of thumb should be a starting point, not a final answer.

A worked comparison

Take someone earning ₹20,00,000 with ₹1,50,000 in 80C investments and ₹2,00,000 in home loan interest — ₹3,50,000 in old-regime-only deductions:

In this case the new regime wins by a wide margin — about ₹1,11,800 — which shows the ₹3.5-4 lakh crossover rule of thumb doesn’t hold at every income level. At ₹20 lakh income specifically, you’d need closer to ₹7-7.5 lakh in old-regime-only deductions before the old regime actually catches up, meaningfully more than the general rule of thumb suggests. Running your own numbers through our Old vs New Tax Regime Calculator takes the guesswork out entirely.

Who should seriously consider the old regime

People paying substantial rent in a metro city, those with an active home loan, and anyone maximizing 80C plus 80D deductions are the most likely candidates for the old regime still making sense. If none of those apply to you, the new regime is very likely your better default.