New Tax Regime vs Old Tax Regime FY2025-26: Which Saves You More Money?

The Union Budget 2025 made the new tax regime more attractive than ever for salaried individuals — pushing the zero-tax threshold to ₹12.75 lakh for salaried taxpayers and ₹12 lakh for others. Yet the old regime still wins for people with substantial deductions: home loans, HRA, health insurance premiums, and ELSS investments can tilt the numbers decisively. Choosing the wrong regime could cost you anywhere from a few thousand to over a lakh of rupees in unnecessary tax each year.

This guide breaks down every material difference between the two regimes for FY2025-26 (Assessment Year 2026-27), provides a precise breakeven analysis across income levels, and walks through five real salary profiles so you can make an informed decision before the financial year closes.

The Big Picture: What Changed in Budget 2025

The most significant change introduced in Union Budget 2025 was the enhancement of the Section 87A rebate under the new tax regime from ₹25,000 to ₹60,000. This single change effectively made the new regime tax-free for individuals with gross income up to ₹12 lakh — because the computed tax liability on ₹12 lakh income (after applying the revised slabs) equals exactly ₹60,000, which is fully offset by the rebate.

For salaried employees, the ₹75,000 standard deduction (introduced in the previous budget and retained) brings the effective zero-tax threshold up to ₹12.75 lakh gross salary. This means a salaried person earning up to ₹12.75 lakh per year pays zero income tax under the new regime — without needing to claim a single additional deduction.

The government has also made the new regime the default regime for salaried employees from FY2024-25 onwards. If you do not explicitly opt for the old regime by submitting Form 10-IEA to your employer (or by filing your return under the old regime), you are automatically assessed under the new regime.

New Tax Regime Slabs FY2025-26

The new regime uses a progressive seven-slab structure with lower rates at every tier compared to the old regime. The key feature is that rebates and most deductions are surrendered in exchange for these lower rates and the enhanced 87A rebate.

Section 87A Rebate: If gross total income (before standard deduction) does not exceed ₹12 lakh, a rebate of up to ₹60,000 is available — effectively making tax liability NIL. For salaried individuals, the ₹75,000 standard deduction means gross CTC up to ₹12,75,000 results in zero tax. Add 4% health and education cess on the tax liability above these thresholds.

Note: The 87A rebate is available only under the new regime for incomes up to ₹12 lakh. It is not available on special-rate income such as capital gains taxable under Section 111A or 112A.

Old Tax Regime Slabs

The old regime has three slabs with a higher basic exemption limit of ₹2.5 lakh. Its strength lies not in the slab rates themselves but in the wide array of deductions that significantly reduce your taxable income before any slab rate applies.

Under the old regime, the maximum tax payable on ₹5 lakh income is ₹12,500 — fully offset by the Section 87A rebate of ₹12,500 (note: the old-regime 87A rebate is ₹12,500, available for income up to ₹5 lakh). Above ₹5 lakh, the 20% slab kicks in, and its impact is substantial. Add 4% cess on all tax payable above exemption thresholds.

The Deduction Checklist: What You Lose in the New Regime

The new regime disallows most of the popular deductions that salaried taxpayers rely on to reduce their tax burden. Before switching, audit every deduction you currently claim:

• Section 80C (₹1.5 lakh limit): ELSS mutual funds, PPF, EPF (employee contribution), life insurance premiums, NSC, SCSS, principal repayment on home loan, children's tuition fees — all disallowed under new regime.
• House Rent Allowance (HRA): Exemption under Section 10(13A) is not available in the new regime. If you pay significant rent in a metro city, this can be a large deduction you forfeit.
• Section 24(b) — Home Loan Interest: The ₹2 lakh deduction on interest paid on a self-occupied property is not available in the new regime. For a person with a large home loan, this is often the single biggest deduction foregone.
• Section 80D — Health Insurance Premiums: Up to ₹25,000 for self/family and ₹50,000 for senior citizen parents (total ₹75,000 possible) — not available under new regime.
• Leave Travel Allowance (LTA): LTA exemption under Section 10(5) is not available.
• Section 80E — Education Loan Interest: Deduction on interest paid on education loan (unlimited, for 8 years) — not available.
• Section 80TTA / 80TTB: Deduction on savings account interest (₹10,000) or senior citizen interest income (₹50,000) — not available.
• Section 80G — Donations: Deductions for approved charitable donations — not available.
• Professional Tax: The ₹2,400 deduction for professional tax paid to state governments — not available.
• Children's Education / Hostel Allowance: Minor allowances under Section 10(14) such as education allowance (₹100/month per child) and hostel allowance (₹300/month per child) — not available.

What Deductions Survive in the New Regime

Not everything is lost when you choose the new regime. Several important tax benefits are specifically retained or exempt under both regimes:

• Standard Deduction (₹75,000 for salaried): Retained in the new regime. Pensioners also get ₹75,000. Non-salaried individuals do not get this benefit under either regime.
• Section 80CCD(2) — Employer NPS Contribution: The employer's contribution to your NPS account is deductible — up to 14% of basic salary for government employees and 10% of basic salary for private sector employees. This can be a meaningful deduction and is available under both regimes. If your employer offers NPS, this should factor heavily into your regime decision.
• Gratuity and Leave Encashment Exemptions: Statutory gratuity exemptions and leave encashment exemptions for government employees remain intact.
• Section 10(10D) — Life Insurance Maturity: Maturity proceeds of life insurance policies (subject to conditions) remain tax-free.
• Interest on Home Loan for Let-Out Property: Unlike self-occupied property (where the ₹2 lakh cap applies in old regime), interest on a home loan for a let-out property can be set off against rental income under both regimes. However, the set-off against other income heads is restricted in the new regime.
• Section 87A Rebate (new regime only): ₹60,000 rebate for income up to ₹12 lakh — this is unique to the new regime from Budget 2025.

Breakeven Analysis: When Does Each Regime Win?

The critical question is: at what level of deductions does the old regime produce lower tax than the new regime? The answer depends on your income level because the marginal rate at which deductions are valued changes with income.

The breakeven deduction threshold is the total of all deductions (beyond the standard deduction) at which both regimes produce identical tax. If your actual deductions exceed this threshold, the old regime wins. If they fall short, the new regime wins.

* Tax figures include 4% cess. Standard deduction of ₹75,000 already applied in new regime figures. Old regime figures assume standard deduction of ₹50,000 (pre-2023 amount; old regime retained ₹50,000). Breakeven thresholds are approximate and should be verified with a tax advisor for your specific situation.

The practical implication: to benefit from the old regime at a ₹20 lakh income, you need to claim deductions worth more than ₹5 lakh beyond the standard deduction. That means combining 80C (₹1.5L) + 80D (₹75K) + home loan interest 24(b) (₹2L) + HRA (₹1.2L or more) — all of which must be genuinely incurred and documented. Many taxpayers without a home loan or significant HRA will find they simply cannot reach this threshold.

Practical Examples: 5 Salary Profiles Compared

The following calculations use gross annual salary (CTC) as the starting point. Old regime figures assume standard deduction of ₹50,000 (retained for old regime). New regime figures apply the ₹75,000 standard deduction and 87A rebate where applicable. Cess at 4% is included in all final figures. All amounts in Indian rupees.

Profile 1 — ₹8 Lakh Salary (Mid-level professional, no home loan)

Verdict at ₹8L: Old regime wins by ₹7,540 if you are investing ₹1.5L in 80C and paying health insurance premiums. If you are not systematically claiming these deductions, the new regime could be equally attractive from a simplicity standpoint.

Note: Under the new regime the gross CTC for 87A rebate is assessed on income after standard deduction. At ₹8L CTC, post-standard-deduction income is ₹7.25L which exceeds the ₹7L threshold for the old-regime 87A. No rebate applies in new regime here.

Profile 2 — ₹12 Lakh Salary (Senior executive, renting, no home loan)

Verdict at ₹12L: New regime wins decisively — by ₹86,840. The 87A rebate of ₹60,000 eliminates the entire tax liability. Even with substantial HRA and 80C deductions, the old regime results in a significant tax bill at this income level.

Profile 3 — ₹15 Lakh Salary (Manager with home loan)

Verdict at ₹15L with ₹4L deductions: Near parity. New regime is very slightly better (by ~₹3,900). But add employer NPS contribution of ₹50,000 in the new regime (80CCD(2)) and the new regime saves an additional ₹7,500+ in tax. At this income level, the outcome is genuinely close and depends on your exact deduction profile.

Profile 4 — ₹20 Lakh Salary (Senior manager, home loan + HRA + 80C + 80D)

Verdict at ₹20L with ₹5.2L deductions: Old regime saves ₹17,940 per year. This profile — home owner paying EMI, renting in a different city, investing in 80C, and maintaining health insurance — represents someone where the old regime genuinely wins. Remove the home loan and HRA (total deductions drop to ₹2L) and the new regime wins by over ₹80,000.

Profile 5 — ₹30 Lakh Salary (Director level, home loan, no HRA)

Verdict at ₹30L with ₹4.75L deductions: Old regime saves ₹1,17,000 per year — a very significant difference at this income level. At 30% marginal tax rate, every additional deduction claimed in the old regime is worth ₹31,200 per lakh (30% tax + 4% cess). If this individual has more deductions (second home loan, larger NPS, senior citizen parent insurance), the gap widens further. At ₹8L+ in total deductions above standard deduction, old regime wins clearly at this income level.

Which Regime Should You Choose: A Decision Framework

Use this framework to make your decision systematically:

Step 1 — Tally your actual deductions (do not assume, document)

List every deduction you currently claim or can legitimately claim: home loan interest paid, actual rent paid and HRA received, actual 80C investments, actual health insurance premiums, employer NPS contributions. Be conservative — do not include deductions you might claim but have not yet made the investment for.

Step 2 — Check against the breakeven threshold for your income

Refer to the breakeven table above. If your total deductions (excluding standard deduction) exceed the threshold for your income level, the old regime likely saves you money. If they fall short, the new regime is better.

Step 3 — Account for 80CCD(2) before deciding

If your employer contributes to your NPS account, calculate the 80CCD(2) benefit available in the new regime. This deduction — up to 10% of basic salary for private sector employees — reduces your new regime tax liability and narrows the gap between regimes.

Step 4 — Consider future deductions, not just current year

If you are planning to take a home loan in the near future, or if your parents are becoming senior citizens (unlocking larger 80D limits), factor that into your decision. It is easier to shift from new to old regime before a financial year starts than to make ad-hoc changes mid-year.

Step 5 — Calculate both and compare for your exact numbers

Online tax calculators on the Income Tax India portal (incometaxindia.gov.in) allow you to compute your exact liability under both regimes. Use your ITR from the previous year as a starting point and adjust for this year's income and deductions. Or speak to a tax advisor who can run the comparison with your Form 16 data.

As a general rule of thumb:

• Income up to ₹12.75L (salaried): New regime almost always wins. Zero tax is hard to beat.
• Income ₹13L–₹18L: Old regime wins only if you have a home loan + HRA + 80C + 80D all working together.
• Income ₹18L–₹25L: Carefully model your numbers. The answer depends strongly on whether you have a home loan and pay rent.
• Income above ₹25L: If you have a home loan with substantial interest, plus senior citizen parents and full 80C, old regime is likely better. Without these, new regime wins.
• Self-employed / business owners: Old regime often wins because business-related deductions are allowed under both regimes (Section 44AD etc.), and personal deductions like home loan interest remain valuable. However, the new regime's simplicity reduces compliance burden.

Talk to a Finvastra Advisor About Tax Planning

The regime comparison is a single piece of holistic tax planning. Choosing the right regime is the starting point — but the next question is whether your 80C investments are optimally structured (ELSS vs PPF vs EPF), whether your employer NPS contribution is being maximised, and whether your home loan and insurance decisions are aligned with your tax profile. Finvastra's advisory team helps salaried individuals and business owners plan their tax exposure across regimes, ensuring deductions are documented, investments are appropriate, and the decision is reviewed every financial year as income and deductions change.