Income Tax in India: New vs Old Regime Explained

Every salaried person in India faces the same question at the start of the financial year: new tax regime or old. Pick wrong and you pay more tax than you needed to. The decision sounds technical, but it comes down to a few clear facts and one simple comparison. This guide walks you through both regimes for the financial year 2025-26 and helps you choose with confidence.

Two regimes, one choice

India runs two parallel income tax systems, and you choose one each year.

• The new tax regime has lower tax rates and wider slabs, but it removes almost all the deductions and exemptions. It is the default. If you do nothing, you are taxed under it.
• The old tax regime has higher tax rates, but it lets you claim a long list of deductions and exemptions, such as Section 80C, HRA and home loan interest.

Neither is universally better. The new regime suits people who do not have large deductions. The old regime suits people who do. The whole game is working out which describes you.

The new regime slabs for FY 2025-26

Under the new regime, your income is taxed in slabs:

These slabs work the way slabs always do. You do not pay one rate on your whole income. Each slice of income is taxed at its own rate. Only the part above ₹24 lakh is taxed at 30 percent.

The rebate that makes income up to ₹12 lakh tax-free

Here is the most important feature of the new regime, and the one many people miss. Section 87A gives a rebate that makes tax effectively zero for a taxable income up to ₹12,00,000.

Add the standard deduction of ₹75,000 that salaried people get, and a salaried person earning up to around ₹12,75,000 can end up paying no income tax at all under the new regime. That is a genuinely large tax-free threshold.

The old regime slabs

The old regime uses fewer, narrower slabs at higher rates:

Under the old regime, the Section 87A rebate makes income up to ₹5,00,000 tax-free, and the standard deduction for salaried people is ₹50,000. The rates are clearly higher than the new regime. The old regime earns its place purely through deductions.

The deductions that power the old regime

The old regime lets you subtract a range of deductions and exemptions from your income before tax is calculated. The main ones are:

• Section 80C, up to ₹1,50,000. Covers EPF, PPF, ELSS, life insurance premium, the principal on a home loan, children's tuition fees and more.
• Section 80D. Health insurance premiums for yourself and your family.
• Section 80CCD(1B), up to ₹50,000. An extra deduction for NPS contributions, on top of the 80C limit.
• HRA exemption. A large exemption on house rent allowance if you pay rent. See our HRA guide.
• Home loan interest, up to ₹2,00,000. Under Section 24(b) for a self-occupied house.
• The standard deduction of ₹50,000 for salaried individuals.

Add these up and they can total several lakh rupees. The more deductions you genuinely have, the more the old regime can save you, despite its higher rates.

How to actually choose

The choice is a single comparison: calculate your tax under each regime and pick the lower one. The decision usually splits along these lines.

The new regime usually wins if you do not have large deductions: you do not pay much rent, you have a small or no home loan, and you do not invest heavily in 80C instruments. For many younger earners and for anyone who prefers simplicity, the new regime is both cheaper and far less paperwork.

The old regime can win if your deductions are large: you pay significant rent and claim HRA, you have a home loan with substantial interest, and you fully use 80C, 80D and the NPS deduction. When total deductions run into several lakh, the old regime's higher rates are outweighed.

Cess and surcharge

Two add-ons apply on top of the slab tax under both regimes. A health and education cess of 4 percent is charged on your tax. And a surcharge applies at higher income levels, starting above ₹50 lakh of income and rising in steps. For most salaried earners the cess is the only add-on that matters, and the calculator includes it.

Practical tips

• Decide early in the year. Choosing your regime at the start of the financial year lets you plan your investments and rent declarations correctly, instead of scrambling in March.
• Do not invest only to save tax. If the new regime is cheaper for you, there is no need to lock money into 80C instruments purely for a deduction. Invest based on your goals.
• If the old regime suits you, use ELSS for 80C. It is the only 80C option that also gives equity growth. See our ELSS guide.
• Keep proof. Under the old regime, keep receipts and statements for every deduction you claim, in case of a query.
• Recheck every year. Your income, rent and loan change over time. The regime that was right last year may not be right this year.

The bottom line

Income tax in India looks complicated, but your real decision is simple. The new regime has low rates and almost no deductions. The old regime has higher rates and lets you claim a lot. Calculate both, pick the lower, and revisit the choice each year.

The best tax regime is not the one with the lowest rates or the most deductions. It is simply the one that leaves more money in your hands.

Run your numbers through the income tax calculator before you commit. For anything complex, such as capital gains, business income or surcharge, a qualified tax adviser is worth the fee.