New regime vs old regime for AY 2026-27 comes down to one question: do your eligible deductions exceed the break-even point for your income? The new regime taxes income at lower slab rates with few deductions and gives zero tax up to ₹12 lakh of taxable income, while the old regime has higher rates but allows HRA, Section 80C, home loan interest and other deductions. A salaried taxpayer earning up to ₹12.75 lakh pays nothing in the new regime, so it wins at that level. Above it, the old regime saves more only when deductions beyond the ₹50,000 standard deduction exceed about ₹5.4 lakh at a ₹15 lakh salary and ₹8 lakh at ₹25 lakh and above.

This guide from The Classic Partners LLP, a chartered accountancy firm in Andheri East, Mumbai, compares slabs, shows the break-even deductions at each salary, explains who should stay in the old regime and walks through the switching rules. It is written for salaried employees, professionals, business owners and NRIs.

What Is the Difference Between New Regime vs Old Regime for AY 2026-27?

The difference between new regime vs old regime for AY 2026-27 is a trade-off between rates and deductions. The new regime under Section 115BAC(1A) has lower slab rates, a ₹75,000 standard deduction and a ₹60,000 rebate up to ₹12 lakh, while the old regime keeps higher rates but allows HRA, Section 80C, Section 80D and home loan interest deductions. The new regime applies automatically unless you opt out.

The new tax regime slabs for AY 2026-27 start with nil tax up to ₹4 lakh and rise in 4-lakh steps from 5 per cent to 30 per cent above ₹24 lakh. The old tax regime slabs are nil up to ₹2.5 lakh, 5 per cent to ₹5 lakh, 20 per cent to ₹10 lakh and 30 per cent above that, with a higher exemption of ₹3 lakh for resident seniors aged 60 to 79 and ₹5 lakh for those aged 80 and above. Cess of 4 per cent applies in both.

Taxpayers who want a personalised comparison before filing can use our income tax consulting support, which runs both computations on your actual numbers. If you also want to know what has changed in the return forms this year, read our guide to the new ITR forms for FY 2025-26 (AY 2026-27).

Which Regime Saves You More Tax at Different Salaries?

The new regime saves more tax up to a gross salary of ₹12.75 lakh, and for most salaried taxpayers up to about ₹20 lakh unless deductions are large; above ₹25 lakh the old regime wins only if deductions exceed ₹8 lakh. The result at your salary depends on the break-even point between old and new regime.

The break-even point between old and new regime is the amount of deductions, other than the standard deduction, at which both regimes produce the same tax. If your deductions are higher, the old regime saves tax; if they are lower, the new regime saves tax. The table below shows the break-even point for a resident individual under 60 with salary income, including 4 per cent cess.

Resident individual below 60, salary income, 4% cess included, total income below ₹50 lakh so no surcharge.

The break-even settles at ₹8 lakh from a salary of about ₹25 lakh because both regimes tax the top slice at 30 per cent, so the gap between the two slab structures stops growing. The figures assume income below ₹50 lakh, where no surcharge applies, and deductions are those beyond the standard deduction. Most taxpayers cannot reach ₹5 to ₹8 lakh of genuine deductions, which is why the new regime vs old regime contest now favours the new regime for the majority.

Worked Example: Tax on 15 Lakh Salary

The tax on 15 lakh salary is ₹97,500 in the new regime. In the old regime it is ₹1,95,000 with ₹2 lakh of deductions, ₹1,32,600 with ₹4 lakh and ₹85,800 with ₹6 lakh, so the old regime wins only once deductions cross the ₹5.44 lakh break-even.

When Does the Old Regime Beat the New Regime?

The old regime beats the new regime when your claimable deductions exceed the break-even point for your salary, which in practice needs a combination of HRA, a home loan and full investment deductions. Old tax regime deductions are valuable individually but rarely add up to ₹5 lakh or more without a home loan.

HRA exemption in old regime equals the lowest of the actual HRA received, rent paid minus 10 per cent of basic salary, and 50 per cent of basic salary in metros such as Mumbai. Salaried employees can have their payroll structured to claim it, and employers that run payroll and TDS compliance apply these exemptions when deducting tax.

Take a Mumbai employee with a ₹18 lakh salary, ₹9 lakh basic, ₹4.5 lakh HRA and rent of ₹3.6 lakh a year. The HRA exemption is ₹2.7 lakh. Adding ₹1.5 lakh under Section 80C, ₹50,000 under Section 80CCD(1B) and ₹25,000 under Section 80D gives ₹4.95 lakh of deductions, below the ₹6.42 lakh break-even, so the new regime saves ₹45,760. If the employee also pays ₹2 lakh of interest on a home loan for a flat owned elsewhere, deductions reach ₹6.95 lakh and the old regime saves ₹16,640.

Why Does the New Regime Win for Income up to ₹12.75 Lakh?

The new regime wins up to ₹12.75 lakh because the slab tax on ₹12 lakh of taxable income is exactly ₹60,000 and the Section 87A rebate cancels all of it. A salaried taxpayer reaches ₹12 lakh of taxable income at a gross salary of ₹12.75 lakh after the ₹75,000 standard deduction, so the tax and the cess are both nil.

The old regime offers nothing comparable. Its rebate is limited to ₹12,500 on income up to ₹5 lakh, which makes a salary of ₹5.5 lakh the zero-tax point after the ₹50,000 standard deduction. A taxpayer earning ₹10 lakh pays nothing in the new regime and about ₹1.07 lakh in the old regime with no deductions, and would need ₹4.5 lakh of deductions to match nil tax.

Marginal relief protects income just above the limit. Where taxable income exceeds ₹12 lakh, the tax payable cannot be more than the excess over ₹12 lakh, so ₹12.1 lakh of taxable income costs ₹10,000 plus cess. Relief runs out at about ₹12,70,588 of taxable income, after which normal slabs apply. The old regime has no marginal relief, so earning ₹1 above ₹5 lakh brings tax of about ₹13,000.

Which Tax Regime Is Better for Salaried Employees, Business Owners, Senior Citizens and NRIs?

Which tax regime is better for salaried employees depends on deductions: employees earning up to ₹20 lakh with modest deductions usually save more in the new regime, while employees with HRA, a home loan and full use of Section 80C and NPS can save more in the old regime. The right answer differs for each type of taxpayer.

How Do You Decide the New Regime vs Old Regime Question Step by Step?

You decide the new regime vs old regime question by estimating income, listing provable deductions, computing tax under both regimes, comparing the result with the break-even point and then declaring the choice. The six steps below keep the decision objective.

1. Estimate Your Total Income for FY 2025-26Add salary, rent, interest, business income and capital gains. Separate income taxed at special rates, because the rebate and slab rates treat it differently.
2. List Deductions You Can ProveCollect rent receipts, investment proofs, insurance premium receipts and the home loan interest certificate. Count only deductions you can document.
3. Compute Tax Under Both RegimesRun the slab computation for each regime, apply the rebate and add 4 per cent cess. The Income Tax Department's e-filing portal also offers a tax calculator for a quick check.
4. Compare With the Break-Even PointCheck whether your deductions beyond the standard deduction exceed the break-even for your salary. If they do, the old regime saves tax.
5. Weigh Non-Tax FactorsSection 80C investments lock money in for years, while the new regime leaves cash free. Consider liquidity, loan repayment plans and the stability of your deductions next year.
6. Declare Your Choice and Confirm in the ReturnTell your employer which regime to use for TDS, and confirm the final choice while filing the return. A mismatch is corrected through the return and any excess TDS comes back as a refund.

A short tax health check before you declare your choice to your employer catches missed deductions and avoids a refund claim later.

How to Switch Between Old and New Tax Regime and What Are the Rules?

How to switch between old and new tax regime depends on your income: a salaried individual without business income can choose the regime afresh every year while filing the return, but a taxpayer with business or professional income must file Form 10-IEA on or before the due date to opt for the old regime.

Section 115BAC makes the new regime the default, so doing nothing means you are taxed under it. Employees declare their preference to the employer, who deducts TDS accordingly, and can change the choice while filing the return, which settles any difference. Taxpayers with business income who opt out and later return to the new regime cannot opt out again while the business continues, so that switch should be a considered one.

Filing on time protects the choice. Form 10-IEA must be filed before the due date under Section 139(1), and a late return carries a fee under Section 234F. Professional help with income tax return filing ensures the regime, the form and the verification are completed within the deadline.

How Have Income Tax Regimes Evolved in India?

Income tax regimes in India have moved from a single high-rate structure with many exemptions before 1991 to two parallel systems today, because each reform traded deductions for lower rates.

• Before 1991. The Income Tax Act, 1961 taxed individuals at steep marginal rates that crossed 90 per cent in the early 1970s, and relief came through exemption limits and the investment-linked rebate in Section 88.
• After 1991. Following the reforms and the Chelliah Committee recommendations, the top rate fell to 40 per cent and slabs reduced to three. Section 80C replaced Section 88 from AY 2006-07.
• Finance Act, 2020. Introduced the optional new regime under Section 115BAC with lower rates and no deductions.
• Finance Act, 2023. Made the new regime the default from AY 2024-25 and extended the standard deduction to it. The 2024 Budget then raised that deduction to ₹75,000.
• Finance Act, 2025. Set the present slabs with a ₹60,000 rebate up to ₹12 lakh.
• 1 April 2026. The Income-tax Act, 2025 takes over, but returns for AY 2026-27 are still filed under the 1961 Act. Official forms, utilities and circulars are available on the Income Tax Department e-filing portal.

Frequently Asked Questions About New Regime vs Old Regime