Tax Planning & Compliance
New vs Old Tax Regime FY 2025-26: Which One Should You Choose?
Every April, lakhs of salaried Indians ask the same question: should I stick with the old tax regime, or move to the new one? For FY 2025-26, the math has shifted again — the new regime now offers zero tax up to ₹12.75 lakh for salaried individuals, but the old regime still wins in many real-world scenarios.
This is a chartered accountant’s break-even analysis, not a marketing pitch for either regime.
The slabs at a glance
New regime FY 2025-26 (default)
| 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% |
Plus standard deduction of ₹75,000 for salaried, employer NPS contribution under 80CCD(2) up to 14% of basic, and the enhanced Section 87A rebate that makes income up to ₹12 lakh (₹12.75 lakh for salaried) effectively tax-free.
Old regime (unchanged)
| Income slab | Rate |
|---|---|
| Up to ₹2,50,000 | Nil |
| ₹2,50,001 – ₹5,00,000 | 5% |
| ₹5,00,001 – ₹10,00,000 | 20% |
| Above ₹10,00,000 | 30% |
Plus standard deduction of ₹50,000 for salaried, full bouquet of deductions (80C, 80D, 80E, HRA, home loan interest, LTA, NPS, etc.) and Section 87A rebate up to ₹5L.
The decision boils down to one number
Calculate your total deductions and exemptions under the old regime — 80C, 80D, HRA exemption, home loan interest under Sec 24, employer NPS, LTA, professional tax, the lot.
Then compare against these break-even thresholds:
| Salary (CTC, approx) | Break-even deductions needed for old regime to win |
|---|---|
| ₹7,50,000 | New regime almost always wins (zero tax) |
| ₹10,00,000 | Old wins if deductions > ~₹2,00,000 |
| ₹15,00,000 | Old wins if deductions > ~₹3,75,000 |
| ₹20,00,000 | Old wins if deductions > ~₹4,25,000 |
| ₹25,00,000 | Old wins if deductions > ~₹4,50,000 |
| ₹50,00,000+ | Old wins if deductions > ~₹4,75,000 |
If your old-regime deductions exceed the threshold for your income bracket, file under the old regime. Below it, the new regime is mathematically better.
Worked example 1: Salaried, ₹15 lakh CTC
Profile: Salaried, gross ₹15,00,000, lives in rented accommodation in metro, has home loan on a self-occupied property, contributes to PPF and ELSS.
| Item | Amount |
|---|---|
| Salary | ₹15,00,000 |
| Old regime deductions | |
| Standard deduction | ₹50,000 |
| 80C (PPF + ELSS + EPF) | ₹1,50,000 |
| 80D (self + parents) | ₹50,000 |
| HRA exemption | ₹1,80,000 |
| Sec 24 (home loan interest) | ₹2,00,000 |
| Professional tax | ₹2,400 |
| Total deductions | ₹6,32,400 |
| Taxable income (old) | ₹8,67,600 |
| Tax (old regime, with cess) | ~₹89,610 |
| New regime | Amount |
|---|---|
| Standard deduction | ₹75,000 |
| Taxable income | ₹14,25,000 |
| Tax (new regime, with cess) | ~₹1,06,600 |
Verdict: Old regime saves ~₹17,000. The home loan interest plus HRA combination is the deciding factor.
Worked example 2: Salaried, ₹12 lakh CTC, no investments
Profile: Young professional, gross ₹12,00,000, owns no property, lives with parents (no HRA), basic 80C through EPF only.
| Item | Old regime | New regime |
|---|---|---|
| Salary | ₹12,00,000 | ₹12,00,000 |
| Standard deduction | ₹50,000 | ₹75,000 |
| 80C (EPF only) | ₹60,000 | — |
| Taxable income | ₹10,90,000 | ₹11,25,000 |
| Tax (with cess) | ~₹1,44,300 | ₹0 (rebate u/s 87A) |
Verdict: New regime saves ₹1.44 lakh. This is the profile the new regime was designed for.
Worked example 3: Salaried, ₹30 lakh CTC
Profile: Senior professional, gross ₹30,00,000, full 80C, employer NPS, home loan on let-out property, family floater health insurance.
| Item | Old regime | New regime |
|---|---|---|
| Salary | ₹30,00,000 | ₹30,00,000 |
| Standard deduction | ₹50,000 | ₹75,000 |
| 80C | ₹1,50,000 | — |
| 80D | ₹75,000 | — |
| 80CCD(2) employer NPS (10% of basic, ~₹15L) | ₹1,50,000 | ₹2,10,000 (14%) |
| Sec 24 (let-out, full interest, capped loss ₹2L set-off) | ₹2,00,000 | — |
| Total deductions | ₹6,25,000 | ₹2,85,000 |
| Taxable income | ₹23,75,000 | ₹27,15,000 |
| Tax (with cess) | ~₹5,10,250 | ~₹5,33,300 |
Verdict: Old regime saves ~₹23,000. At higher incomes, the gap narrows because the marginal rate is 30% under both — the value of deductions is fixed, but the new regime’s lower-bracket savings stop mattering.
When the new regime almost always wins
- Income up to ₹12.75 lakh (salaried) — zero tax beats anything old regime can offer.
- You have no home loan, no HRA, no large 80C investments.
- You’re early in your career and rebuilding savings.
- You don’t want to track investment proofs and documentation overhead.
- Your employer offers higher NPS contribution — under the new regime, the 80CCD(2) limit is 14% of basic salary versus 10% under the old.
When the old regime usually wins
- You have significant home loan interest (close to or at the ₹2 lakh cap on a self-occupied property, or higher on a let-out property).
- You claim full HRA exemption in a metro city.
- You have ₹1.5L 80C + ₹50-75K 80D + LTA + professional tax adding up.
- You have an education loan with significant 80E interest.
- You’re in the ₹10L–₹20L salary band — this is the sweet spot for old regime savings.
How to actually opt for the regime
- Salaried, no business income: Simply select the regime when filing your ITR. You can switch every year.
- Business or professional income: File Form 10-IEA before the due date of filing your return. Once you opt out of the new regime, you can return to it only once — choose carefully.
- TDS at source: Tell your employer in April which regime you want, so monthly TDS is computed correctly. You can still change at filing time, but you’ll either have a refund to claim or extra tax to pay.
Don’t decide on instinct — model both
We run a side-by-side regime computation for every client. Twice we’ve seen senior professionals reflexively choose the new regime because “it sounds modern” and lose ₹40,000–₹60,000 of tax savings. The reverse also happens — small business owners stuck on the old regime because of habit, when their actual deduction profile no longer justifies it.
If you want our team to model your AY 2026-27 return under both regimes — with documentation you can keep on file — get in touch. The exercise typically takes 30 minutes once we have your Form 16, AIS, and investment proofs.
Frequently Asked Questions
Can I switch between regimes every year?
Yes, if you only have salary or other non-business income. If you have business or professional income, you can switch out of the new regime once via Form 10-IEA, and switch back once — that’s it.
Does the ₹12.75 lakh zero-tax claim apply to everyone?
No. It applies to salaried individuals because of the ₹75,000 standard deduction (₹12,00,000 income limit + ₹75,000 std deduction = ₹12,75,000 gross). For non-salaried, the limit is ₹12 lakh of total income.
Is HRA exemption available under the new regime?
No. HRA, LTA, professional tax, and most Chapter VI-A deductions (80C, 80D, 80E, etc.) are not available under the new regime. Employer NPS contribution under 80CCD(2) is the notable exception.
What about home loan interest deduction?
Under the new regime, Sec 24 interest deduction is not available for self-occupied property. For let-out property, the loss can still be set off against rental income but cannot be carried forward to set off against other heads.
When should I make the choice?
Tell your employer in April for correct TDS, but you can override at the time of filing. The final regime choice is made when you file your ITR — that’s the only one that matters legally.
Related reading
Written by
CA Pardeep Jha
Chartered Accountant · ICAI Membership No. 520555 · FRN 024234N. 15+ years advising MSMEs, startups, NRIs, and high-growth businesses on tax, compliance, and financial automation.
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