Old vs new tax regime: which is better in 2026-27?

By the India Law Simplified editorial team · Verified against the bare Acts & official portals · Updated 2026-08-18 · ~8 min read

⚡ Quick answer

There is no single right answer — it depends on your deductions. After the 2025 Budget made the new regime's slabs much wider and the ₹12 lakh rebate generous, the new regime (the default for AY 2026-27) now wins for the large majority. The old regime wins only when your deductions are very large — in practice, usually a high HRA from renting in a metro plus full 80C, 80D and NPS. The only way to be sure is to compute your tax under both.

Compare both regimes free →

Choosing between the old and new tax regime is the most important tax decision a salaried Indian makes each year — pick wrong and you overpay by thousands. The good news: it's a simple comparison once you understand the trade-off. The new regime gives you lower rates but almost no deductions; the old regime has higher rates but lets you reduce your taxable income with 80C, HRA, home-loan interest and more. This guide explains exactly when each one wins, with a clear example.

1The core trade-off in one line

The new regime = lower tax rates, but you give up almost all deductions and exemptions. The old regime = higher tax rates, but you can shrink your taxable income with deductions. So the question is simply: are your deductions big enough to outweigh the new regime's lower rates?

2When the new regime wins

The new regime is usually better if you don't claim large deductions — for example, if you don't pay rent, don't have a home loan, and don't invest much in 80C instruments.

It's also the simpler choice: a ₹75,000 standard deduction is built in for salary, income up to ₹12 lakh is tax-free via the 87A rebate, and you don't have to keep proof of investments. It's the default, so if you do nothing, you're taxed under it.

3When the old regime wins

The old regime can beat the new one if you genuinely use its deductions. The big ones are:

Standard deduction: ₹50,000 (salary)
Section 80C: up to ₹1,50,000 (EPF, PPF, ELSS, life insurance, tuition, home-loan principal)
Section 80D: ₹25,000–₹1,00,000 (health insurance)
Section 24(b): up to ₹2,00,000 (home-loan interest)
HRA exemption: depends on your rent and city
Section 80CCD(1B): extra ₹50,000 for NPS

⚠️ ImportantThese deductions are only real if you actually make the payments. Claiming them without proof can lead to a notice and penalty — the old regime rewards genuine investment, not paperwork.

4A side-by-side example

Take Meera, salary ₹15 lakh, who rents a flat in a metro (claiming a large HRA exemption) and uses her full investments:

New regime: ₹15L − ₹75,000 standard deduction = ₹14.25L taxable → tax ≈ ₹97,500 (including cess).
Old regime: after the ₹50,000 standard deduction, ₹3.75L HRA, ₹1.5L (80C), ₹50,000 NPS and ₹25,000 (80D) — about ₹6.5L of deductions — taxable income is ₹8.5L → tax ≈ ₹85,800 (including cess).

💡 ExampleFor Meera, the old regime saves about ₹11,700 a year, because her HRA and investments are large. But a colleague on the same ₹15 lakh who owns her home (so no HRA) and invests little would pay less under the new regime. Same salary, opposite answer — which is exactly why you must compute both. Note: even a ₹2 lakh home-loan interest deduction alone usually isn't enough to beat the new regime; it's a big HRA that most often tips the balance.

5Marginal relief: the band just above ₹12 lakh

The section 87A rebate takes tax to nil up to ₹12 lakh of taxable income under the new regime. Cross that by a rupee and the rebate falls away entirely, which would mean a jump from nothing to roughly ₹61,500 — so the law provides marginal relief.

Marginal relief caps the tax at the amount by which your income exceeds ₹12 lakh. Earn ₹12,10,000 and the tax cannot exceed ₹10,000, even though the slab calculation produces more. The relief runs out at roughly ₹12,70,588, above which the ordinary slab tax is lower than the excess and marginal relief stops applying.

⚠️ ImportantThis is the single most common error in online regime calculators — they either ignore marginal relief entirely or apply it past the point where it ceases to help. If a calculator shows a cliff at ₹12,00,001, it is wrong.

6Switching between the regimes, and when you cannot

The new regime is the default. Doing nothing means you are in it.

If you have no business or professional income, you may choose afresh every year, including at the time of filing — so a bad choice at the payroll declaration stage can still be corrected in the return.

If you have business or professional income the position is much tighter. You opt out of the new regime by filing Form 10-IEA before the due date, and you may return to the new regime only once. After that switch back, you cannot opt out again for as long as you have business income.

✅ TipSalaried filers: your employer's declaration only fixes how much TDS is deducted. It does not lock your regime for the return.

7What the new regime still allows

The new regime is often described as having no deductions at all, which costs people money. It removes most of them, but not all.

Standard deduction of ₹75,000 for salaried taxpayers and pensioners
Employer's contribution to NPS under section 80CCD(2) — up to 14% of salary, and it is the single largest deduction still available
Deduction on family pension
Employer's contribution to EPF within the prescribed limits

⚠️ ImportantWhat it does remove: 80C, 80D, HRA, LTA, the interest deduction on a self-occupied house, and most other Chapter VI-A deductions. That is why the old regime still wins where a home loan and rent are both genuinely in play.

8Surcharge: the one place the new regime is unambiguously better

Below about ₹50 lakh the two regimes differ only on slabs and deductions. Above it, surcharge enters, and here the new regime has a structural advantage that has nothing to do with deductions.

The old regime carries surcharge bands rising to 37% on income above ₹5 crore. The new regime caps surcharge at 25% — the 37% band does not apply at all. At very high incomes this alone can outweigh every deduction the old regime allows.

⚠️ ImportantThe cap is a feature of the regime, not of your investments, so no amount of 80C or home-loan interest closes the gap once the 37% band would have applied.

Old vs new regime — what's allowed
Feature	New regime	Old regime
Status	Default	Optional (must opt in)
Tax-free up to	₹12 lakh (87A rebate)	₹5 lakh (87A rebate)
Standard deduction	₹75,000	₹50,000
80C / 80D / HRA / home loan	Not allowed	Allowed
NPS 80CCD(2) (employer)	Allowed	Allowed
Best for	Few deductions, simplicity	Large deductions (rent, loan, 80C)

Key takeaways

The new regime is the default — doing nothing chooses it.
It wins for most people without a home loan and large deductions; the old regime wins where a home loan and rent are both genuinely in play.
Marginal relief protects the band just above ₹12 lakh, up to roughly ₹12,70,588.
Salaried filers may choose afresh each year; business income allows only one switch back, via Form 10-IEA.
Employer NPS under 80CCD(2) survives in the new regime and is the largest deduction still available.

Frequently asked questions

Can I switch regimes every year?

Salaried taxpayers without business income can choose the regime afresh each year while filing. Those with business or professional income can switch back to the old regime only once, using Form 10-IEA.

Which regime is the default if I do nothing?

The new regime is the default for AY 2026-27. If you want the old regime (to claim deductions), you must actively opt for it while filing — and submit Form 10-IEA if you have business income.

I have no home loan or rent — which is better for me?

Almost certainly the new regime. Without HRA, home-loan interest or large 80C investments, you have little to deduct, so the new regime's lower rates and ₹12 lakh rebate win comfortably.

Does the old regime still exist?

Yes — the old regime continues. It hasn't been removed; it's just no longer the default. You can still choose it if your deductions make it cheaper.

What is marginal relief and when does it apply?

Under the new regime the section 87A rebate makes tax nil up to ₹12 lakh of taxable income. Just above that, marginal relief caps the tax at the amount by which income exceeds ₹12 lakh, so there is no cliff. It stops helping at roughly ₹12,70,588, above which the ordinary slab tax is lower.

Does the new regime allow any deductions at all?

Yes. The ₹75,000 standard deduction for salary and pension, the employer's NPS contribution under section 80CCD(2) of up to 14% of salary, the family pension deduction and the employer's EPF contribution all survive. What goes is 80C, 80D, HRA, LTA and self-occupied home-loan interest.

I have business income — can I switch back and forth?

No. With business or professional income you opt out of the new regime by filing Form 10-IEA before the due date, and you may return to the new regime only once. After returning you cannot opt out again while you continue to have business income.

Is the new regime better at very high incomes?

Usually yes, because of surcharge. The old regime's surcharge rises to 37% above ₹5 crore; the new regime caps it at 25% and the 37% band does not exist. At that level the cap can outweigh every deduction the old regime offers.