How to Save Income Tax in India FY 2025-26: A Practical Guide

Most salaried employees in India overpay tax by ₹20,000 to ₹50,000 every year. Not because the tax system is unfair, but because they simply do not claim everything they are entitled to.

The deductions are sitting right there in the law. People miss them because the rules feel confusing, the deadlines sneak up, and nobody hands you a checklist. This guide is that checklist for FY 2025-26.

We will go through the regime choice first, then walk through every major deduction in plain language, with the numbers that matter. You can test any of it against your own salary with the free salary and tax calculator as you read.

First: new regime or old regime?

This single choice often decides more than all your investments combined. The new regime gives you lower rates and zero tax up to ₹12.75 lakh of salary, but you give up almost every deduction. The old regime keeps higher rates but lets you claim HRA, 80C, NPS, home loan interest and health insurance.

The rule of thumb is simple. Most people with rent, a home loan or NPS contributions save more under the old regime. People with few deductions usually do better in the new regime. There is no need to guess. Compare both side by side in our new vs old tax regime guide and run your real figures through the salary calculator.

Section 80C: the ₹1,50,000 deduction

This is the big one. Section 80C lets you reduce your taxable income by up to ₹1,50,000 a year, a limit set by the Income Tax Department. At the 30% slab, that is roughly ₹45,000 back in your pocket. What qualifies?

EPF, which is already deducted from most salaried payslips. PPF at 7.1%, completely tax-free, which you can project with the PPF calculator. SSY at 8.2% if you have a girl child under 10, shown in the SSY calculator. ELSS mutual funds with a three-year lock-in. Life insurance premiums. Home loan principal repayment. Children's school tuition fees. And five-year tax-saver fixed deposits.

Here is the trap. All of these share the same ₹1,50,000 ceiling. Many salaried employees find their entire 80C limit is already used up by EPF alone. Check your payslip before investing anywhere else, or you might be locking money away for a deduction you cannot actually claim.

The hidden gem: NPS under 80CCD(1B)

This is the deduction most people miss entirely. The National Pension System gives you an extra ₹50,000 deduction under Section 80CCD(1B), and it sits on top of the ₹1,50,000 of 80C. It does not share the limit.

This single deduction is worth ₹15,000 in your pocket if you are in the 30% tax bracket. For a contribution you would arguably make for retirement anyway, that is a strong return before the investment even grows. See what your contribution builds with the NPS calculator.

HRA: if you pay rent

House Rent Allowance is one of the largest exemptions available, and it lives only in the old regime. The exempt amount is the lowest of three figures: your actual HRA, your rent minus 10% of basic salary, and either 50% of basic for metro cities or 40% for non-metro.

Watch the metro definition. If you live in Bangalore, Hyderabad or Pune and you claim 50%, you are calculating it wrong for this year's return. For FY 2025-26, only Delhi, Mumbai, Kolkata and Chennai are metro cities. Everywhere else uses 40%. Get the exact figure from the HRA exemption calculator, and read the full method in our HRA exemption guide.

Home loan: two separate benefits

A home loan gives you two deductions, not one, and people often forget the second. Under Section 24(b) you can claim up to ₹2,00,000 a year on the interest you pay. Separately, the principal repayment counts towards your 80C limit. Together these can be a substantial saving for homeowners. Work out your split with the mortgage calculator.

Health insurance: Section 80D

Health cover protects your finances and cuts your tax. Under the Section 80D rules you can claim up to ₹25,000 for premiums covering yourself, your spouse and children. You can claim another ₹25,000 for your parents, or ₹50,000 if they are senior citizens. That is up to ₹75,000 in deductions, on top of the protection itself.

Your before-31-March checklist

Tax saving is a year-end scramble for most people. Do these before the financial year ends and you will not leave money on the table:

Declare your investments to your employer using Form 124, which replaced Form 12BB. Submit rent receipts for HRA. Invest in NPS for the extra ₹50,000 deduction. Top up your 80C investments if EPF has not filled the limit. Buy health insurance for your parents if you have not already. None of this takes long, and the saving is real.

Calculate your exact tax saving

Every salary is different, so the only number that matters is yours. Enter your income, your deductions and your regime choice in the salary and tax calculator to see your exact liability under both regimes, then make the choice that keeps the most money with you.

New tax regime deductions people forget exist

There is a widespread belief that the new regime strips away every deduction, so there is nothing left to claim. That is not quite true. A few valuable deductions survive, and missing them means paying more tax than you need to, even after you choose the new regime.

Start with the one most people overlook: your employer's contribution to NPS under Section 80CCD(2). This is not the ₹50,000 self-contribution of 80CCD(1B), which the new regime does drop. It is the amount your employer puts into your NPS on your behalf, and it stays deductible in the new regime. From FY 2025-26 the limit is a uniform 14% of salary, basic plus dearness allowance, for both government and private-sector employees, after Budget 2024 raised the private-sector cap from 10% to 14% under this regime, per the Income Tax Department. If your employer offers a corporate NPS benefit, this is real money.

Two more survive. The standard deduction of ₹75,000 for salaried taxpayers applies automatically in the new regime for FY 2025-26, higher than the ₹50,000 of the old regime. And interest on a home loan for a let-out property still qualifies under Section 24, even though the self-occupied home loan interest benefit does not.

What you give up is the bigger list. Section 80C, 80D health insurance, HRA exemption and most other Chapter VI-A deductions all disappear in the new regime. That is the trade for the lower rates and the higher zero-tax threshold up to ₹12.75 lakh of salary.

So how do you decide? A rough rule of thumb helps before you run the exact numbers. Add up what you would actually claim in the old regime: 80C, 80D, HRA and self-occupied home loan interest. If that total comfortably clears roughly ₹4 to ₹4.5 lakh, the old regime often still wins. Below that, the new regime's lower rates usually come out ahead. This is a guideline, not a universal truth, because your salary level and exact mix of deductions shift the break-even point. Never decide on the rule of thumb alone. Put your real figures through the salary and tax calculator, which compares both regimes side by side, and read the full breakdown in our new vs old tax regime guide.

⚠️Disclaimer: This article is for general information only and is not tax advice. Tax rules and limits can change. Verify figures with the income tax portal or a qualified chartered accountant before acting.