Old vs new tax regime

Every general-purpose piece of advice about "which regime is better" is wrong for someone, because the honest answer depends entirely on one thing: how much you can legitimately deduct under the old regime. The new regime has lower rates but allows almost nothing to be deducted. The old regime has higher rates but lets you subtract HRA, investments, and loan interest before tax even applies. Which one wins is arithmetic, not opinion — and it changes as your numbers change.

That's exactly why this page exists as a calculator rather than an article. An article can only ever describe the general shape of the tradeoff; it can't know your actual rent, your actual 80C contributions, or your actual income this year. Type your numbers in above and the comparison is specific to you, updated the moment anything changes — no spreadsheet, no manual slab lookups, no guessing which side of the rebate threshold you land on.

What actually moves the needle

For most salaried people with modest deductions, the new regime wins outright — its bigger standard deduction and the ₹12,00,000 rebate threshold mean a large share of middle-income earners owe nothing at all under it. The old regime starts to compete once your deductions add up: rent that qualifies for a meaningful HRA exemption, an active Section 80C investment habit, or a home loan with substantial interest in its early years. None of these are exotic — they're just specific to your situation, which is why this tool asks for your actual deduction total rather than guessing.

The rebate threshold changes the calculus more than people expect

Because the new regime's 87A rebate zeroes out tax entirely up to ₹12,00,000 taxable income, and tapers gently for a while above it through marginal relief, the old regime needs a genuinely large deduction to catch up once your income sits near that line. This is a relatively recent change — the rebate threshold was ₹7,00,000 before Budget 2025 — so if you compared regimes a couple of years ago and settled on an answer, it's worth checking again with current numbers rather than assuming the old conclusion still holds.

A word on switching regimes

If your only income is salary, you can pick a regime freely each year when you file your return — there's no lock-in. Your employer's payroll system withholds tax based on a default (the new regime, unless you tell them otherwise) throughout the year, but that's just an estimate for TDS purposes. Your actual choice happens at filing time, and it can differ from what your employer assumed. If you have income from a business or profession, the rules around switching back to the old regime after choosing the new one are more restrictive — that's a case worth checking with a chartered accountant rather than assuming this tool's general answer applies.

Age matters, but only on one side

The old regime gives senior citizens (60-79) and super senior citizens (80+) a higher basic exemption before any tax applies at all — ₹3,00,000 and ₹5,00,000 respectively, against ₹2,50,000 for everyone else. The new regime doesn't vary by age in any way, which is worth knowing if you're comparing regimes on behalf of a parent rather than yourself: their age can tilt the answer toward the old regime even where it wouldn't for a younger earner with identical income and deductions.

What to do with the number above

Treat the savings figure as a starting point for a real decision, not the final word. It's built on the deduction total you entered — if that number is optimistic about what you'll actually invest or claim, the comparison will be too. Come back and adjust it as your actual rent, investments, or loan interest become clearer over the year, and the answer will stay accurate to your real situation rather than a plan you made in April and never revisited.