New vs Old Tax Regime FY 2026-27: Which Saves You More?

Every year around tax declaration season, I get the same question from salaried professionals and business owners alike: "Which regime should I pick?" And every year, most people answer it based on a colleague's opinion rather than their own numbers. That's a mistake — because the answer depends entirely on two things: your income level and how much you genuinely claim in deductions. Nothing else.

As a Chartered Accountant who has spent fifteen years in corporate finance and now advises founders and professionals on their financial structures, let me walk you through the FY 2026-27 comparison the way I'd do it for a client: slabs first, then the rebate mechanics, then worked examples, and finally the breakeven rule that settles the question for most people in under a minute.

The New Regime Slabs for FY 2026-27

The new regime is the default. If you do nothing, this is what applies to you:

Income Slab	Rate
Up to ₹4,00,000	Nil
₹4,00,001 – ₹8,00,000	5%
₹8,00,001 – ₹12,00,000	10%
₹12,00,001 – ₹16,00,000	15%
₹16,00,001 – ₹20,00,000	20%
₹20,00,001 – ₹24,00,000	25%
Above ₹24,00,000	30%

Two features make the new regime far more generous than its rates alone suggest:

• Standard deduction of ₹75,000 for salaried taxpayers (versus ₹50,000 under the old regime).
• Section 87A rebate of up to ₹60,000, which wipes out the entire tax liability if your taxable income is ₹12,00,000 or less. Check the arithmetic: tax on ₹12L under these slabs is ₹20,000 (on the 4–8L slab) plus ₹40,000 (on the 8–12L slab) = ₹60,000 — exactly the rebate amount. So a salaried person earning up to ₹12,75,000 gross pays zero tax under the new regime, once the standard deduction is applied.

If your taxable income creeps slightly above ₹12L, marginal relief ensures you don't pay more tax than the amount by which your income exceeds the threshold — so there's no cliff where earning ₹10,000 more costs you ₹60,000 in tax.

The Old Regime: Higher Rates, But Deductions Live On

The old regime keeps the familiar structure: nil up to ₹2.5L, 5% from ₹2.5L–5L, 20% from ₹5L–10L, and 30% above ₹10L. Its rates are steeper and they kick in earlier — but it's the only regime where you can still claim Section 80C (₹1.5L), 80D health insurance, HRA exemption, home loan interest under Section 24(b), NPS under 80CCD(1B), and the rest of Chapter VI-A.

That's the whole trade: the new regime buys simplicity with lower rates; the old regime rewards people who genuinely use large deductions. The question is where the crossover sits.

Worked Example 1: Salary ₹12,75,000

New regime: ₹12,75,000 less ₹75,000 standard deduction = ₹12,00,000 taxable. Tax before rebate = ₹60,000. Section 87A rebate = ₹60,000. Tax payable: nil.

Old regime: ₹12,75,000 less ₹50,000 standard deduction = ₹12,25,000. Even after a full ₹1.5L of 80C, taxable income is ₹10,75,000. Tax = ₹12,500 + ₹1,00,000 + 30% of ₹75,000 = ₹1,35,000, plus 4% cess = ₹1,40,400.

Verdict: at this income level the new regime wins by ₹1.4 lakh, and it isn't close. Unless your deductions are enormous, anyone up to roughly ₹13L gross should simply take the new regime.

Worked Example 2: Salary ₹20,00,000

New regime: Taxable income ₹19,25,000 after standard deduction. Tax: ₹20,000 + ₹40,000 + ₹60,000 + 20% of ₹3,25,000 (₹65,000) = ₹1,85,000, plus cess = ₹1,92,400.

Old regime with a solid deduction stack — ₹50,000 standard, ₹1.5L 80C, ₹25,000 80D, ₹2L home loan interest under 24(b) (₹4.25L total): taxable income ₹15,75,000. Tax = ₹1,12,500 + 30% of ₹5,75,000 = ₹2,85,000, plus cess = ₹2,96,400.

Verdict: the new regime still wins by over ₹1 lakh — even with a home loan and full 80C. To beat the new regime at ₹20L gross, you'd need old-regime deductions of roughly ₹7.5 lakh or more, which in practice means a very large HRA claim stacked on top of everything else.

Worked Example 3: Salary ₹30,00,000

New regime: Taxable ₹29,25,000. Tax: ₹20,000 + ₹40,000 + ₹60,000 + ₹80,000 + ₹1,00,000 + 30% of ₹5,25,000 (₹1,57,500) = ₹4,57,500, plus cess = ₹4,75,800.

Old regime with the same ₹4.25L deduction stack: taxable ₹25,75,000. Tax = ₹1,12,500 + 30% of ₹15,75,000 = ₹5,85,000, plus cess = ₹6,08,400.

Verdict: new regime wins again, this time by about ₹1.3 lakh. The pattern holds across most income levels because the widened slabs — 15% up to ₹16L, 20% up to ₹20L, 25% up to ₹24L — do the work that deductions used to do, without the paperwork.

So Who Should Still Pick the Old Regime?

In my experience, the old regime survives for a shrinking group of taxpayers who tick several of these boxes simultaneously:

• Large HRA claims — high rent in a metro city, with HRA forming a big slice of salary structure.
• Home loan interest of ₹2L under 24(b) on a self-occupied property, or larger interest on a let-out property.
• Full 80C, 80D, and 80CCD(1B) utilisation as a habit, not an intention.

If you claim all of these together and the total crosses roughly ₹7–8 lakh at higher incomes, run both computations carefully — the old regime may still edge ahead. For everyone else, the arithmetic in the examples above is your answer. Salaried taxpayers can also switch between regimes every year, so this is a decision you revisit annually, not a one-way door.

Three Practical Notes Before You Decide

First, don't confuse tax planning with investment planning. PPF, ELSS and insurance can still be good decisions on their own merits — just don't buy them only for a deduction you no longer benefit from.

Second, if you have business or professional income, the switching rules are more restrictive than for salaried taxpayers — take advice before opting out of the default.

Third, run the actual numbers. Every salary structure is slightly different — variable pay, employer NPS, perquisites — and a two-minute calculation beats an hour of forum reading.

And if you're a founder or business owner thinking beyond personal tax — entity structure, salary-versus-dividend, cross-border income — that's the kind of work we do every week. Explore our other free finance tools or get in touch.

Quick FAQ

Can I switch regimes every year?

Salaried taxpayers can choose afresh each year at filing. Taxpayers with business or professional income face restrictions on switching back once they opt out — take advice first.

Is the new regime really the default?

Yes. If you don't actively opt for the old regime, your employer will deduct TDS under the new regime slabs. Tell your payroll team early in the year if you want otherwise.

Does the ₹12L zero-tax limit include capital gains?

No — the Section 87A rebate applies to income taxed at slab rates. Special-rate income such as equity capital gains is taxed separately and doesn't get the rebate.