The difference between the old and new tax regime comes down to a trade-off: the new regime offers lower headline slab rates but strips away most deductions, while the old regime keeps higher rates but lets you cut your taxable income through exemptions like Section 80C, 80D and HRA. For most salaried people with few investments, the new regime is simpler and often cheaper. For those who already claim large deductions such as home-loan interest, insurance premiums and provident-fund contributions, the old regime can still work out lower. Since Assessment Year 2024-25, the new regime is the default, so you must actively choose the old one if you want it. Tax rules and figures change every Budget, so always confirm the current numbers on the official Income Tax Department portal before filing.
Answer first: which regime is cheaper for you?
There is no single winner. The right choice depends on how much you can legitimately deduct. A useful rule of thumb: add up all the deductions you actually claim in a year. If that total is small, the new regime’s lower rates usually win. If your deductions are large, the old regime’s ability to shrink taxable income can beat the new regime’s flat structure. The only way to be sure is to compute your liability under both and compare, ideally using the calculator on the government portal each financial year.
What is the new tax regime?
The new tax regime was introduced in FY 2020-21 and made the default option from FY 2023-24. It offers a wider set of slabs with generally lower rates, but it removes most popular deductions and exemptions. Under this regime the basic exemption limit was raised to Rs 4 lakh for FY 2025-26, and salaried taxpayers can still claim a standard deduction of Rs 75,000. Crucially, the Section 87A rebate was expanded so that resident individuals with taxable income up to Rs 12 lakh effectively pay no tax; for a salaried person the standard deduction pushes that break-even close to Rs 12.75 lakh. These thresholds are revised at Budget time, so treat them as indicative and check the latest notification.
What you give up under the new regime is significant. Deductions under Section 80C (investments such as PPF, ELSS and life insurance), Section 80D (health insurance), house rent allowance and the Rs 2 lakh home-loan interest deduction are not available, apart from a few carve-outs such as the employer’s contribution to the National Pension System.
What is the old tax regime?
The old regime is the long-standing structure that rewards saving and spending in tax-favoured ways. Its basic exemption limit stayed at Rs 2.5 lakh for most individuals, with higher limits for senior and super-senior citizens. In exchange for higher slab rates, it lets you reduce taxable income through a long list of deductions:
- Section 80C up to Rs 1.5 lakh for PPF, EPF, ELSS, life insurance premiums, principal on a home loan and more.
- Section 80D up to Rs 25,000 for health insurance, and up to Rs 50,000 for senior citizens.
- House Rent Allowance (HRA) and the Leave Travel Allowance for eligible salaried employees.
- Section 24(b) home-loan interest of up to Rs 2 lakh on a self-occupied property.
- Section 80CCD(1B) an extra Rs 50,000 for NPS contributions.
If you understand how deductions flow into your salary, our explainers on Form 16 and TDS in income tax show where these amounts actually appear on your payslip and tax certificate.
Old vs new tax regime: the slabs compared
The two regimes use different slab structures. The table below sets out the FY 2025-26 rates. Figures are indicative and can change each Budget.
| Annual taxable income | New regime rate | Old regime rate |
|---|---|---|
| Up to Rs 2.5 lakh | Nil | Nil |
| Rs 2.5 lakh to Rs 4 lakh | Nil | 5% |
| Rs 4 lakh to Rs 5 lakh | 5% | 5% |
| Rs 5 lakh to Rs 8 lakh | 5% | 20% |
| Rs 8 lakh to Rs 10 lakh | 10% | 20% |
| Rs 10 lakh to Rs 12 lakh | 10% | 30% |
| Rs 12 lakh to Rs 16 lakh | 15% | 30% |
| Rs 16 lakh to Rs 24 lakh | 20% to 25% | 30% |
| Above Rs 24 lakh | 30% | 30% |
Notice how the new regime keeps a lower rate over a much wider band of income before hitting 30%, while the old regime jumps to 30% at Rs 10 lakh. That is why high earners with few deductions often gravitate to the new regime.
A worked comparison
Consider two salaried people, each earning Rs 12 lakh a year. The first invests little and claims almost no deductions. Under the new regime, the enhanced rebate can bring the tax bill to nil or near-nil, so this person clearly benefits. The second maxes out Section 80C, pays a home-loan EMI with sizeable interest, and has health insurance. Their deductions could total several lakh rupees, dragging taxable income well below the slab thresholds under the old regime and possibly producing a lower bill there. The lesson: the more you deduct, the more the old regime competes.
How to choose and switch
Salaried taxpayers can generally choose between regimes each year when filing their return. Individuals with business or professional income face tighter rules on switching, so they should read the current provisions carefully. Practical steps:
- List every deduction you can genuinely claim, with proof.
- Compute tax under both regimes using the official calculator.
- Pick the lower figure, and remember the new regime is applied by default if you do nothing.
- Re-check every year, because both your finances and the rules change.
Retirement products interact with this choice. Our guide to EPF and PPF and the comparison of NPS and PPF explain which contributions still earn deductions and which do not under each regime.
Who typically benefits from each regime
Patterns emerge once you look at real profiles. The new regime tends to suit young earners early in their careers who have not yet taken on a home loan or built large insurance and investment commitments, freelancers and professionals who value simplicity, and high earners whose deductions, even if sizeable in rupee terms, are small relative to their income. The old regime tends to suit people paying substantial home-loan interest, those renting in expensive cities who claim large HRA, and disciplined savers who fully use Section 80C, 80D and the additional NPS deduction. The point is not to follow a label but to run your own numbers, because two people on identical salaries can reach opposite conclusions depending on their spending and saving.
It also helps to think ahead. A choice that is optimal today may not be next year if you buy a house, start a family or change jobs. Reviewing the decision annually keeps you from paying more than you need out of inertia.
Surcharge, cess and the effective rate
The slab rates are not the whole story. On top of income tax, a health and education cess is applied, and higher incomes attract a surcharge that rises in bands. The new regime capped the top surcharge rate at a lower level than the old regime, which is one reason very high earners often find the new regime attractive even before considering deductions. Because these add-ons change your effective tax rate, a proper comparison should use total tax payable, including cess and any surcharge, rather than the headline slab percentage alone. The official calculator handles this automatically, which is why relying on it beats back-of-the-envelope maths.
How the rebate actually works
The Section 87A rebate is what makes lower incomes tax-free under the new regime. A rebate is not a deduction from income; it is a reduction of the tax you owe, applied after the tax is computed. If your taxable income is within the eligibility limit, the rebate can wipe out the entire liability, which is how a salaried person earning up to roughly the standard-deduction-adjusted threshold can end up paying nothing. Just above that limit, though, tax applies on the slabs, so a small increase in income can create a noticeable jump in tax, an effect worth planning around. The rebate limits differ between the two regimes, and they have been revised repeatedly, so always confirm the figure in force for the year you are filing.
Documents and proof you should keep
- Investment proofs for anything claimed under 80C, such as PPF passbook entries, ELSS statements and premium receipts.
- Rent receipts and the landlord’s PAN where required, if you claim HRA under the old regime.
- Home-loan interest certificate from your lender for the Section 24(b) claim.
- Health-insurance premium receipts for 80D.
Keep these even after filing, because the tax department can ask you to substantiate claims later. Under the new regime you claim far fewer of these, which is part of its administrative appeal.
Common mistakes to avoid
- Assuming the new regime is always cheaper. For heavy savers it may not be.
- Forgetting the standard deduction. Salaried taxpayers get it under both regimes now, which changes the maths.
- Ignoring the default rule. If you want the old regime, you must opt in.
- Using last year’s slabs. Budgets revise thresholds; verify current figures.
This article is educational and not investment or tax advice. Slabs, limits and rebates change from year to year, so confirm the latest position on the Income Tax Department website or with a qualified professional. For more plain-language money explainers, visit newsreverse com or browse the business section.