Every financial year, millions of Indian salaried employees face the same question: old tax regime or new? Since the new tax regime was introduced in Budget 2020 and significantly revised in Budget 2023, the choice has become both more important and more confusing. The government has made the new regime the default, but the old regime remains available for those who opt into it explicitly.
This is not a question with a universal answer. The right choice depends entirely on your income, your eligible deductions, your investment habits, and your personal financial situation. This article gives you the framework to calculate the answer for yourself — and explains the key factors that typically make the old or new regime better.
The Core Difference
The old tax regime offers higher tax slab rates but allows a wide range of deductions and exemptions that reduce your taxable income. These include Section 80C (up to ₹1.5 lakhs), Section 80D (health insurance premiums), home loan interest (Section 24b, up to ₹2 lakhs), HRA exemption, LTA, standard deduction, and many others.
The new tax regime offers lower slab rates but eliminates almost all deductions and exemptions. The only deductions available under the new regime are the standard deduction (₹75,000 for salaried individuals after the 2024 Budget revision), employer’s NPS contribution (Section 80CCD(2)), and a few specific exemptions.
The fundamental trade-off: lower rates vs higher deductions. Whether the old or new regime saves you more tax depends on how much your deductions reduce your taxable income.
The New Tax Regime Slabs (FY 2024-25 onwards)
Under the new regime, the tax slabs are:
Income up to ₹3 lakhs: Nil. Income from ₹3 lakhs to ₹7 lakhs: 5%. Income from ₹7 lakhs to ₹10 lakhs: 10%. Income from ₹10 lakhs to ₹12 lakhs: 15%. Income from ₹12 lakhs to ₹15 lakhs: 20%. Income above ₹15 lakhs: 30%.
Additionally, a rebate under Section 87A means that if your total income under the new regime is up to ₹7 lakhs, your tax liability is zero.
The Old Tax Regime Slabs
Under the old regime: Income up to ₹2.5 lakhs: Nil. Income from ₹2.5 lakhs to ₹5 lakhs: 5%. Income from ₹5 lakhs to ₹10 lakhs: 20%. Income above ₹10 lakhs: 30%.
The 87A rebate under the old regime applies if total income is up to ₹5 lakhs, making the effective tax zero for incomes at that level.
When the New Regime is Clearly Better
For taxpayers with income up to ₹7 lakhs and minimal deductions, the new regime is almost always better. The 87A rebate makes the entire income tax-free under the new regime, regardless of deductions claimed.
For higher incomes, the new regime tends to be better when your total eligible deductions are small. If you do not have a home loan, do not claim HRA, do not invest in 80C instruments beyond mandatory EPF, and have modest health insurance premiums, the lower slab rates of the new regime usually result in lower overall tax.
The new regime is also simpler. No receipts to collect, no investment proofs to submit, no last-minute scramble to fill the 80C limit. If simplicity has value to you — and it should — that is a real benefit of the new regime.
When the Old Regime is Better
The old regime typically wins when you have substantial, legitimate deductions that together significantly reduce your taxable income. The most common combination that favours the old regime:
A home loan with a significant interest component (₹1.5–₹2 lakhs in interest, deductible under Section 24b), combined with full Section 80C utilisation (₹1.5 lakhs in EPF, ELSS, or PPF), HRA exemption if you are renting (which can exempt a large portion of income), and Section 80D for health insurance (₹25,000 or more).
If you can claim the standard deduction (₹50,000 under the old regime) plus the above, you could easily reduce your taxable income by ₹4.5–₹5.5 lakhs. For someone earning ₹15–₹25 lakhs, this can tip the calculation firmly in favour of the old regime.
The Crossover Calculation: A Practical Guide
The simplest way to determine your answer is to calculate your tax under both regimes and compare. Here is a worked example:
Assume gross income of ₹15 lakhs, with the following deductions under the old regime: standard deduction ₹50,000, Section 80C ₹1.5 lakhs, Section 80D ₹25,000, home loan interest ₹2 lakhs. Total deductions: ₹4.25 lakhs. Taxable income under old regime: ₹10.75 lakhs.
Old regime tax on ₹10.75 lakhs: ₹0 on first ₹2.5 lakhs + ₹12,500 on next ₹2.5 lakhs (5%) + ₹1,00,000 on next ₹5 lakhs (20%) + ₹22,500 on remaining ₹0.75 lakhs (30%) = approximately ₹1,35,000 (before cess).
New regime tax on ₹15 lakhs (after standard deduction of ₹75,000, taxable income ₹14.25 lakhs): ₹0 on first ₹3 lakhs + ₹20,000 on next ₹4 lakhs (5%) + ₹30,000 on next ₹3 lakhs (10%) + ₹31,500 on next ₹2.1 lakhs (15%) + ₹45,000 on remaining ₹2.1 lakhs… the total comes to approximately ₹1,50,000 (before cess).
In this scenario, the old regime saves approximately ₹15,000 before cess — a meaningful but not dramatic difference. At ₹20 lakhs income with the same deductions, the old regime advantage grows. At ₹10 lakhs with fewer deductions, the new regime may win.
The NPS Advantage Under the New Regime
One deduction that remains available under the new regime is the employer’s contribution to NPS under Section 80CCD(2). If your employer contributes to your NPS account, that contribution (up to 10% of basic salary for private sector, 14% for government employees) is deductible even under the new regime. This is a significant benefit that many employees are not aware of — and it can meaningfully reduce new regime tax liability for those whose employers offer NPS.
If you have flexibility in structuring your salary, requesting your employer to route part of your CTC as NPS contribution can reduce your new regime tax bill substantially. This is one of the few tax optimisation moves available under the new regime.
How to Make the Decision Each Year
The regime choice can be made each year for salaried employees (business owners have more restrictions). The process: in April, estimate your full-year income and all eligible deductions. Calculate approximate tax under both regimes. Choose the lower one and inform your employer so they deduct TDS accordingly. If your situation changes mid-year, you can adjust, but it is cleaner to decide at the start of the year.
Use the income tax calculator on the official income tax portal (incometax.gov.in) or any reputable financial website. Plug in your numbers and compare. This takes ten minutes and is worth doing carefully every April.
The Long-Term Consideration
There is one important long-term factor the pure tax calculation does not capture: behaviour. The old regime incentivises investment in 80C instruments, health insurance, and home loans. These are good financial decisions in their own right. The new regime removes that incentive — and some people, freed from the compulsion to invest for tax saving, simply spend more instead of investing more.
If the old regime’s tax incentives are what drives you to invest in ELSS, contribute to PPF, and maintain health insurance, then the old regime’s behavioural nudges may be worth choosing even if the new regime saves you a small amount of tax. Money invested and compounding for decades is worth far more than a small annual tax saving that gets consumed by lifestyle spending.
Disclaimer: Tax laws change frequently. The figures in this article are based on the tax structure as of FY 2024-25. Please verify current slabs and consult a CA or tax advisor for personalised guidance.