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

Every year, before an Indian resident even starts computing income tax, there is a fork in the road that comes first — do you use the old tax regime or the new one. This is not a minor technical detail. It changes your slab rates, your standard deduction, and whether familiar deductions like Section 80C, HRA and home loan interest apply to you at all.

The new regime, first introduced in 2020 and substantially reworked since, is built on a simple trade: much lower slab rates and a generous standard deduction, in exchange for giving up almost every other deduction and exemption. No 80C, no HRA exemption, no self-occupied home loan interest deduction — just your income, minus the standard deduction and a couple of narrow carve-outs, taxed at gentler rates.

The old regime keeps the tax structure Indians have used for decades — higher slab rates, but a genuinely long menu of ways to reduce taxable income: Section 80C investments, health insurance premiums under 80D, HRA if you are a salaried tenant, home loan interest under Section 24(b), and more. It rewards people who save, invest and borrow in the ways the tax law recognizes.

Since Budget 2023, and continuing through FY2026-27, the new tax regime is the default option for every taxpayer. If you do not do anything — do not submit any declaration, do not file any extra form — your tax is automatically computed under the new regime.

For salaried employees, choosing the old regime means submitting a declaration to your employer, typically at the start of the financial year, so TDS is deducted accordingly; you can still change your final choice when you file your income tax return. For anyone with business or professional income, opting for the old regime requires filing Form 10-IEA before the return filing deadline — our dedicated guide on Form 10-IEA walks through the mechanics and timing in detail.

Income up to ₹4,00,000 is entirely tax-free, and rates then climb in steps — 5%, 10%, 15%, 20%, 25% — up to a top rate of 30% on income above ₹24,00,000. Salaried employees and pensioners also get a standard deduction of ₹75,000, taken straight off gross salary before any of this slab math even begins.

On top of that, Section 87A gives a full rebate — effectively zero tax — to anyone with taxable income up to ₹12,00,000, with a marginal-relief mechanism just above that line so a small rise in income never creates a jump in tax that eats more than the raise itself. We cover this in detail in our guide to the 87A rebate and marginal relief.

Almost nothing else applies. The two notable survivors are employer contributions to NPS under Section 80CCD(2), and — for anyone with a let-out property — home loan interest on that property, along with the standard 30% deduction on rental income used to compute house-property income itself. Everything else — 80C, 80D, HRA, self-occupied home loan interest, and the rest — simply does not exist under this regime.

The old regime's slabs depend on age. For most taxpayers below 60, income up to ₹2,50,000 is tax-free, then 5% up to ₹5,00,000, 20% up to ₹10,00,000, and 30% above that. Senior citizens (60-79) get a higher tax-free band up to ₹3,00,000, and super seniors (80+) up to ₹5,00,000 — both with the same 20%/30% structure above that. The standard deduction here is ₹50,000.

Where the old regime earns its keep is the deduction menu: up to ₹1,50,000 under Section 80C for things like PPF, ELSS and life insurance, an additional ₹50,000 for voluntary NPS contributions under 80CCD(1B), health insurance premiums under 80D, HRA exemption if you pay rent, home loan interest up to ₹2,00,000 on a self-occupied property, and several more — each covered in its own guide on this site.

The old regime also has its own Section 87A rebate — a full tax waiver up to ₹5,00,000 of taxable income — but critically, this one has no marginal-relief cushion. Cross ₹5,00,000 by even a rupee and the entire rebate disappears, not just the tax on that extra rupee. We explain this cliff in detail in our guide to the 87A rebate.

The honest way to think about this choice is a trade-off, not a rule of thumb: the old regime's higher slab rates cost you money everywhere, while its deductions save you money only where you can genuinely claim them. The more of that deduction menu applies to your real life — actual rent paid, an actual home loan, actual 80C/80D investments — the more the old regime's higher rates get clawed back.

As a rough pattern, taxpayers with substantial HRA claims (renters in expensive metro cities) and/or sizeable home loan interest on a self-occupied property, stacked with a maxed-out 80C, 80CCD(1B) and 80D, are the ones most likely to still find the old regime cheaper — particularly at higher income levels, where the gap in slab rates matters more in absolute rupee terms.

Taxpayers with few or no genuine deductions to claim — no rent, no home loan, minimal 80C investment — are almost always better off under the new regime's lower rates and larger standard deduction. There is no shortcut around actually running both numbers for your own situation, which is exactly what our Income Tax Calculator is built to do.

Union Budget 2026 made no changes to the slab structure set in Budget 2025 — but that structure was already a big step up in generosity for the new regime, with a tax-free band up to ₹4,00,000 and a Section 87A rebate that zeroes out tax on taxable income up to ₹12,00,000.

That ₹12,00,000 rebate threshold, combined with the ₹75,000 standard deduction, means a very large share of India's salaried middle class now pays zero income tax under the new regime — a bar the old regime, capped at a ₹5,00,000 rebate, cannot match without deductions doing a lot of heavy lifting.

This is why the old regime, for most people, has narrowed from "the default sensible choice" to "worth checking if you have big-ticket claims" — specifically substantial HRA, a sizeable self-occupied home loan, or house-property losses being carried forward. Our guide on which deductions survive the new regime walks through this comparison with actual worked numbers.

Salaried employees have the most flexibility — you can declare one regime to your employer for TDS purposes and still choose differently when you actually file your return, and you are free to reconsider your choice each financial year based on how your deductions shape up.

For anyone with business or professional income, the process runs through Form 10-IEA, and the rules around switching back and forth are more restrictive. Read our dedicated guide on Form 10-IEA for the full mechanics, deadlines, and what happens if you miss them.

Here is the philosophy difference summarized side by side — for your exact numbers, use the Income Tax Calculator or read our worked-example comparison guide.

There is no universal answer — the right regime depends entirely on your own salary structure, rent, home loan, and how disciplined you are about 80C-type investments. Two people earning an identical salary can have opposite right answers depending on whether one pays ₹20,000 rent in Mumbai and the other lives in a family-owned home.

The fastest way to know for sure is to run your actual numbers. Our Income Tax Calculator computes both regimes side by side using your real salary, HRA, deductions and home loan details, and gives you a plain-language recommendation — no manual slab math required.