Old Tax Regime or New Tax Regime? Which one is Beneficial

Old Tax Regime or New Tax Regime? Which One Is Beneficial

The new tax regime is the default for FY 2026-27 (AY 2027-28), and for most salaried taxpayers it delivers a lower tax bill — particularly if your gross salary is Rs. 7,75,000 or below, where the effective liability is zero after the Section 87A rebate. Yet the old regime remains the stronger choice for anyone whose combined deductions — home loan interest, HRA, 80C investments, health insurance premiums, and NPS contributions — cross roughly Rs. 3.75 lakh. This guide walks you through both sets of slabs, the break-even arithmetic, three worked Rs. examples, and the exact steps for switching.

New Tax Regime Slabs for FY 2026-27 (AY 2027-28)

The new regime, made the default by Finance Act 2023 and improved in Finance Act 2024, applies these slabs for Assessment Year 2027-28:

Add 4% Health and Education Cess on total tax. Surcharge applies for income above Rs. 50 lakh, but is capped at 25% under the new regime — a significant advantage over the old regime, where it can reach 37% on income exceeding Rs. 5 crore, pushing the effective marginal rate to 42.74%.

Three Concessions That Make the New Regime Attractive

Standard deduction of Rs. 75,000 is available to salaried employees and pensioners — no proofs, no employer approval, no paperwork. Finance Act 2024 raised this from Rs. 50,000, narrowing one of the old regime's key advantages.

Section 87A rebate of Rs. 25,000 wipes out tax entirely if your total income does not exceed Rs. 7,00,000. Combined with the standard deduction, a salaried person with a gross salary up to Rs. 7,75,000 pays zero income tax under the new regime. The arithmetic: Rs. 7,75,000 − Rs. 75,000 standard deduction = Rs. 7,00,000 taxable; tax = Rs. 15,000 (5% on Rs. 3L) + Rs. 10,000 (10% on Rs. 1L) = Rs. 25,000; less Section 87A rebate of Rs. 25,000 = nil.

No investment proof obligation. You choose the regime, your employer deducts TDS accordingly, and you file. No LIC receipts, PPF passbook, home loan interest certificate, or HRA landlord PAN needed.

The 87A Cliff — A Planning Hazard

The Section 87A rebate is a cliff, not a ramp. Cross Rs. 7,00,000 in taxable income by a single rupee and the entire Rs. 25,000 rebate vanishes. A salaried person with gross salary of Rs. 7,75,001 (taxable income Rs. 7,00,001) owes approximately Rs. 26,000 in tax; their colleague at Rs. 7,75,000 owes Rs. 0. If a year-end performance bonus pushes you over this threshold, plan in advance — voluntary investments or timing adjustments may be worth exploring.

Old Tax Regime: Slabs and the Deduction Advantage

The old regime slabs for an individual below 60 years have been unchanged for years:

Section 87A rebate under the old regime is Rs. 12,500, available only if total income does not exceed Rs. 5,00,000. The standard deduction for salaried taxpayers is Rs. 50,000. For senior citizens (60–80 years), the basic exemption limit is Rs. 3 lakh; for super senior citizens (80+), it is Rs. 5 lakh.

The old regime wins only if the tax savings from its deductions more than compensate for its higher slab rates. On its own, the old regime is at a disadvantage at almost every income level. Load it with deductions and the math shifts.

Key Deductions Available Only in the Old Regime

These are the provisions that move the needle. Minor ones exist, but the following six are what determine the outcome for most taxpayers.

Section 80C — up to Rs. 1,50,000 Covers EPF (Employee Provident Fund) contributions, PPF, LIC premiums, NSC, ELSS funds, principal repayment on a home loan, Sukanya Samriddhi Yojana, and five-year tax-saving FDs. At the 30% bracket, maximising 80C saves Rs. 46,800 (30% tax + 4% cess). This is the baseline for most middle-income taxpayers.

Section 24(b) — up to Rs. 2,00,000 Interest on a home loan for a self-occupied property is deductible up to Rs. 2,00,000 per year. At the 30% slab, this single deduction saves Rs. 62,400 in tax. If you have a housing loan, this is often the decisive factor in the regime comparison.

HRA Exemption — Section 10(13A) The exempt amount is the least of: (a) actual HRA received, (b) rent paid minus 10% of basic salary, and (c) 50% of basic salary for metro cities (40% for non-metros). A metro-based employee drawing Rs. 12 lakh annual basic with HRA of Rs. 3 lakh, paying rent of Rs. 22,000 per month, can exempt a substantial portion from tax. This exemption disappears entirely in the new regime.

Section 80CCD(1B) — up to Rs. 50,000 An additional NPS contribution beyond the Rs. 1.5L 80C ceiling. Your combined deduction potential from 80C and 80CCD(1B) alone is Rs. 2,00,000. At the 30% bracket, that is Rs. 62,400 saved.

Section 80D — up to Rs. 25,000 / Rs. 50,000 Health insurance premiums: Rs. 25,000 for self, spouse, and children (Rs. 50,000 if the insured is a senior citizen), plus a separate Rs. 25,000 (or Rs. 50,000 for senior parents) for parents' policies. A taxpayer in their 40s covering themselves and senior parents can claim up to Rs. 75,000 under this single section.

Leave Travel Allowance (LTA) — Section 10(5) Two journeys within India in a four-year calendar block are tax-exempt, covering economy airfare or AC rail fare for self and family. The current block covering 2026 runs 2026–2029 (fresh block). LTA is unavailable in the new regime.

Section 80CCD(2) — available in BOTH regimes One frequently overlooked deduction that survives in the new regime: the employer's NPS contribution under Section 80CCD(2), up to 10% of basic salary. If your employer offers this benefit, claim it regardless of which regime you choose. Many taxpayers and HR departments miss this.

The Break-Even Threshold: Where the Regimes Change Places

The central question: do your deductions save enough tax in the old regime to outweigh its higher slab rates?

A useful rule of thumb, calculated for a salaried taxpayer in each income bracket:

• Gross salary Rs. 10 lakh: You need approximately Rs. 2.7 lakh in deductions beyond the standard deduction for the old regime to match the new regime.
• Gross salary Rs. 12 lakh: Threshold rises to approximately Rs. 3.2 lakh.
• Gross salary Rs. 15 lakh: Threshold is approximately Rs. 3.75 lakh.
• Gross salary Rs. 20 lakh: Threshold is approximately Rs. 4 lakh — the 30% bracket makes each rupee of deduction more valuable, but the gap between regime slabs also narrows.

Why does the threshold rise with income? In the old regime, every rupee of deduction saves tax at your marginal rate. At the 20% slab, one rupee of deduction saves Rs. 0.208 (including cess). At the 30% slab, it saves Rs. 0.312. Higher earners extract more value from each deduction — but they also face a steeper hill because the new regime's slab structure becomes more competitive higher up.

The practical implication: a taxpayer with 80C (Rs. 1.5L) + 80CCD(1B) (Rs. 50K) + 80D (Rs. 25K) already has Rs. 2.25L in non-standard deductions. Add home loan interest of Rs. 1.5L and you are well above the Rs. 3.75L threshold for a Rs. 15L salary. The old regime wins.

Worked Examples: Three Taxpayer Profiles

Profile 1: Software Developer, Rs. 10 Lakh Salary, No Home Loan

Situation: Rented flat, Rs. 80,000 annual PPF (80C partially used, topped up to Rs. 1.5L through ELSS), health insurance of Rs. 15,000. No HRA component in salary structure.

New regime:

• Taxable income: Rs. 10,00,000 − Rs. 75,000 = Rs. 9,25,000
• Tax: Rs. 0 + Rs. 15,000 + Rs. 30,000 + 15% × Rs. 25,000 = Rs. 48,750
• Cess: Rs. 1,950 | Total: Rs. 50,700

Old regime:

• Deductions: Rs. 50,000 (standard) + Rs. 1,50,000 (80C) + Rs. 15,000 (80D) = Rs. 2,15,000
• Taxable: Rs. 7,85,000
• Tax: Rs. 12,500 + 20% × Rs. 2,85,000 = Rs. 69,500
• Cess: Rs. 2,780 | Total: Rs. 72,280

Verdict: New regime saves Rs. 21,580. Even with full 80C and health insurance, the break-even threshold of Rs. 2.7L has not been met. This taxpayer's deductions are Rs. 1.65L beyond the standard — not enough. Unless this person adds NPS contributions or pays a home loan, the new regime wins comfortably.

Profile 2: Finance Head, Rs. 15 Lakh Salary, Home Loan and HRA

Situation: Metro city. HRA received Rs. 3 lakh per year; HRA exempt calculated at Rs. 1,80,000 per Section 10(13A) (rent Rs. 20,000/month, basic salary Rs. 8L). Home loan outstanding, interest component Rs. 1,80,000 in FY 2026-27. Maximises 80C (Rs. 1.5L), 80CCD(1B) (Rs. 50K), and 80D (Rs. 25K).

New regime:

• Taxable: Rs. 15,00,000 − Rs. 75,000 = Rs. 14,25,000
• Tax: Rs. 0 + Rs. 15,000 + Rs. 30,000 + Rs. 45,000 + 20% × Rs. 2,25,000 = Rs. 1,35,000
• Cess: Rs. 5,400 | Total: Rs. 1,40,400

Old regime:

• Standard deduction: Rs. 50,000; HRA exemption: Rs. 1,80,000; 80C: Rs. 1,50,000; Section 24(b): Rs. 1,80,000; 80CCD(1B): Rs. 50,000; 80D: Rs. 25,000
• Total deductions: Rs. 6,35,000
• Taxable: Rs. 8,65,000
• Tax: Rs. 12,500 + 20% × Rs. 3,65,000 = Rs. 85,500
• Cess: Rs. 3,420 | Total: Rs. 88,920

Verdict: Old regime saves Rs. 51,480. Deductions beyond the standard deduction equal Rs. 5.85L — well above the Rs. 3.75L threshold. The old regime is the clear choice here, and the margin only widens if LTA or additional 80G donations are claimed.

Profile 3: Independent Consultant, Rs. 25 Lakh Professional Income

Situation: ITR-3 filer, no standard deduction (not salaried). Maximises 80C (Rs. 1.5L), 80CCD(1B) (Rs. 50K), health insurance Rs. 25,000. No home loan currently.

New regime (no standard deduction for non-salaried):

• Taxable: Rs. 25,00,000
• Tax: Rs. 0 + Rs. 15,000 + Rs. 30,000 + Rs. 45,000 + Rs. 60,000 + 30% × Rs. 10,00,000 = Rs. 4,50,000
• Cess: Rs. 18,000 | Total: Rs. 4,68,000

Old regime:

• Deductions: Rs. 1,50,000 + Rs. 50,000 + Rs. 25,000 = Rs. 2,25,000
• Taxable: Rs. 22,75,000
• Tax: Rs. 12,500 + Rs. 1,00,000 + 30% × Rs. 12,75,000 = Rs. 4,95,000
• Cess: Rs. 19,800 | Total: Rs. 5,14,800

Verdict: New regime saves Rs. 46,800. The 30% bracket in the old regime is punishing, and Rs. 2.25L in deductions is not enough to compensate. If this consultant takes a home loan or has significant HRA-equivalent rent deduction, the gap narrows — but without those, the new regime wins decisively even without a standard deduction.

How to Switch Regimes: Form 10-IEA and Employer Declaration

For Salaried Taxpayers With No Business Income

You are in the most flexible position. You can choose your regime each assessment year at the time of filing your ITR — no separate form is needed. The process:

1. April 2026: Submit your investment and deductions declaration to your employer. Your employer's HR or payroll team will ask you to declare your regime preference for TDS computation. This is usually done via Form 12BB or an equivalent internal portal.
2. Throughout FY 2026-27: Your employer deducts monthly TDS based on your declared regime.
3. By 31 July 2026 (ITR due date for non-audit cases): You can still change regimes when filing your ITR. Any over-deducted TDS becomes a refund; any shortfall must be paid.
4. Caution on shortfalls: If TDS under-deduction exceeds Rs. 10,000, interest under Section 234B may apply. Align your employer declaration with your likely filing choice to avoid cash-flow surprises.

For Taxpayers With Business or Professional Income

The process is materially different — and the consequences of getting it wrong are permanent.

1. The new regime is the automatic default. To choose the old regime, you must proactively file Form 10-IEA on the income tax e-filing portal (incometax.gov.in → e-File → Income Tax Forms → Form 10-IEA).
2. Form 10-IEA must be filed on or before the ITR due date under Section 139(1) — typically 31 July for non-audit taxpayers and 31 October for those subject to tax audit under Section 44AB.
3. If you do not file Form 10-IEA, you are locked into the new regime for that year.
4. The lifetime reversion rule: Once you file Form 10-IEA (choosing old regime) and subsequently want to return to the new regime, you may do so — but only once in your lifetime. After reverting to the new regime, you cannot opt back to the old regime. Run the long-term numbers before committing.
5. If you have a mix of salary income and occasional professional income (freelance assignments, directorship fees), even Rs. 1 of business/professional income puts you in this category. Seek professional advice on classification.

Common Mistakes That Cost Taxpayers Money

1. Assuming the Rs. 7L zero-tax bracket applies to gross salary. The Rs. 7,00,000 threshold for Section 87A refers to taxable income after standard deduction. A gross salary of Rs. 7,25,000 (taxable Rs. 6,50,000) is tax-free. A gross salary of Rs. 7,80,000 (taxable Rs. 7,05,000) is not — the full tax of approximately Rs. 25,500 applies with no rebate. The critical planning figure is Rs. 7,75,000 gross — not Rs. 7,00,000.

2. Missing Section 80CCD(2) in the new regime. Your employer's NPS contribution — up to 10% of basic salary — is deductible even under the new regime. This is one of the very few Chapter VI-A deductions that survives. If your employer offers NPS, this amount should appear in your Form 16 Part B. Verify it is being claimed.

3. Using theoretical maximum deductions instead of actual ones. If your EPF contribution already accounts for Rs. 90,000 of your Rs. 1.5L 80C limit, your marginal 80C headroom is only Rs. 60,000. Do not build your regime comparison on assumed maximums — pull actual figures from your payslip, EPF passbook, and LIC receipts.

4. Business income taxpayers treating regime switching like salaried taxpayers. If you had freelance income, rental income treated as business income, or any professional receipts during the year, you need Form 10-IEA to opt for the old regime. There is no fallback after the ITR due date.

5. Ignoring TDS mismatch and Section 234B interest. Switching regimes between employer declaration and ITR filing creates a TDS mismatch. Calculate whether a shortfall will exceed Rs. 10,000 before switching — if it does, deposit advance tax for the fourth instalment (15 March) to avoid interest.

6. Not recalculating every year. Your deduction footprint is not static. A home loan gets paid down; the HRA changes when you move cities; 80D premiums rise. The regime that was optimal in FY 2025-26 may not be optimal in FY 2026-27. The calculation takes under an hour using your salary slip, Form 26AS, and AIS on the income tax portal. The cost of not doing it can be Rs. 30,000–60,000 in unnecessary tax for a Rs. 15 lakh earner.

Key Takeaways

• Gross salary up to Rs. 7,75,000 (salaried)? Your FY 2026-27 tax liability under the new regime is zero — claim the standard deduction and the Section 87A rebate takes care of the rest.
• The break-even deduction threshold is approximately Rs. 2.7L (at Rs. 10L salary) to Rs. 4L (at Rs. 20L salary) in deductions beyond the standard deduction; cross it and the old regime wins.
• A home loan + HRA + full 80C + 80D + NPS stack routinely puts mid-senior salaried employees well past the break-even — run the numbers with actual figures, not theoretical maximums.
• Section 80CCD(2) (employer NPS contribution) survives in the new regime — verify with your HR that it is being deducted and reflected in your Form 16.
• Salaried taxpayers (no business income) can switch regimes each assessment year at ITR filing time; no Form 10-IEA or other declaration is required beyond the employer TDS declaration (Form 12BB) at the start of the financial year.
• Business and professional income taxpayers must file Form 10-IEA on the e-filing portal before the Section 139(1) due date to opt for the old regime; the right to revert to the new regime can be exercised only once in a lifetime.
• Review your choice every April using your current payslip, home loan statement, and insurance receipts — the number that decides your regime is the same number that changes every year.