How to Save Tax in FY 2025-26: Complete Guide

The new tax regime applies rates of 0% up to Rs 4 lakh, 5% (Rs 4-8 lakh), 10% (Rs 8-12 lakh), 15% (Rs 12-16 lakh), 20% (Rs 16-20 lakh), 25% (Rs 20-24 lakh), and 30% above Rs 24 lakh. The Rs 12 lakh rebate under Section 87A means zero tax liability up to Rs 12 lakh of taxable income.

The old regime offers the same slab rates as before with a wider set of deductions. The regime that saves you more tax depends on the total value of deductions you can legitimately claim. For most people with a salary below Rs 10 lakh and limited deductions, the new regime wins outright. Above Rs 15 lakh, the decision requires a careful comparison.

Rule of thumb: if your total deductions (80C + HRA + home loan interest + NPS + others) exceed Rs 3.5-4 lakh annually, the old regime is likely better. Use the Old vs New Regime calculator below to run your exact numbers.

Section 80C allows a deduction of up to Rs 1.5 lakh per year from taxable income. This is only available under the old regime. The most popular 80C instruments are ELSS mutual funds (3-year lock-in, market-linked returns historically 12-15%), EPF employee contribution (mandatory for salaried), PPF (15-year tenure, 7.1% guaranteed), NSC (5-year lock-in, 7.7%), tax-saving FD (5-year lock-in, 6.5-7.5% from banks), and life insurance premium (LIC/term plans).

ELSS is the preferred 80C option for most investors below 50 years because it has the shortest lock-in (3 years) and the highest expected returns. PPF suits risk-averse investors who want guaranteed returns. EPF contributions are already compulsory for most employees and should be counted toward the Rs 1.5 lakh limit before deciding on additional instruments.

Important: If the standard deduction plus 80C plus HRA alone adds up to more than Rs 3.75 lakh, the old regime almost always beats the new regime for incomes up to Rs 20 lakh.

House Rent Allowance (HRA) exemption is calculated as the minimum of: (i) actual HRA received from employer, (ii) 50% of basic salary (40% for non-metro cities), or (iii) actual rent paid minus 10% of basic salary.

For a person with a basic salary of Rs 6 lakh/year living in Mumbai and paying Rs 25,000/month rent: HRA received = Rs 2.4 lakh; 50% of basic = Rs 3 lakh; rent - 10% basic = Rs 3 lakh - Rs 60,000 = Rs 2.4 lakh. The exemption is Rs 2.4 lakh (the minimum of the three). This is the single biggest deduction available to urban salaried employees.

You cannot claim HRA exemption if you own a home in the city you live in, or if you live with your parents rent-free. If you are paying rent to a parent, ensure rent receipts are maintained and the parent declares the income.

Under the old regime, health insurance premiums are deductible up to Rs 25,000 per year for self, spouse and children (Rs 50,000 if you or your spouse is a senior citizen). An additional Rs 25,000 is allowed for premiums paid for parents (Rs 50,000 if parents are senior citizens). Maximum combined deduction: Rs 1 lakh for those with senior citizen parents.

At a 30% tax bracket, Rs 1 lakh of 80D deduction saves Rs 30,900 (including 4% cess) in tax. Health insurance is a mandatory financial purchase regardless — the tax saving makes it even more compelling.

NPS (National Pension System) offers an additional deduction of Rs 50,000 per year under Section 80CCD(1B), over and above the Rs 1.5 lakh 80C limit. This is particularly powerful for those in the 30% bracket: Rs 50,000 deduction = Rs 15,450 tax saved annually.

The employer contribution to NPS (up to 10% of basic salary) is deductible under 80CCD(2) even in the new regime — making NPS uniquely valuable regardless of which regime you choose. If your employer offers NPS as a CTC component, this is the single best tax optimisation available in FY 2025-26.

Drawback: NPS has a longer lock-in (until age 60) and mandates annuitization of 40% of the corpus at maturity. Use our NPS calculator to model the corpus and pension you would receive.

For self-occupied property, Section 24(b) allows deduction of up to Rs 2 lakh on home loan interest per year under the old regime. The principal repayment (up to Rs 1.5 lakh) is covered under Section 80C. Combined, a home loan with EMIs above Rs 40,000/month will likely generate deductions exceeding Rs 3.5 lakh annually.

For a joint home loan, both co-borrowers can independently claim these deductions — effectively doubling the benefit for working couples. The property must be self-occupied or the full interest can be deducted for let-out property (with a cap on total loss set-off).

Under the new regime, home loan interest deduction for self-occupied property is not available. This alone can make the old regime significantly better for home loan borrowers.

Mistake 1: Choosing the wrong regime at the start of the year and being unable to switch. Salaried employees declare their regime in April; this fixes TDS for the year. If you guess wrong, you can correct it only at ITR filing — but your TDS will have been excessive (or deficient, triggering interest). Always run both regimes through the Old vs New Regime Calculator before the April declaration window.

Mistake 2: Not counting EPF in 80C. A typical Rs 12 lakh salary triggers EPF employee contribution of Rs 21,600/year (12% of basic, assumed Rs 1.8 lakh basic). For higher salaries with Rs 5 lakh basic, EPF alone contributes Rs 60,000 to 80C — meaning only Rs 90,000 more is needed from PPF/ELSS, not Rs 1.5 lakh. Many employees double-invest because they forget EPF counts.

Mistake 3: Last-minute LIC purchases in March. Each March, agents push insurance-cum-investment products (ULIPs, endowment plans) that lock you into 4-5% returns for 15-20 years just to save Rs 30,000 in tax. A pure-term plan plus ELSS gives better insurance cover and far better returns. Never buy investment-linked insurance for tax saving.

Mistake 4: Forgetting HRA needs rent receipts and PAN of landlord (if annual rent exceeds Rs 1 lakh). Without these, the employer can disallow HRA at the TDS stage. Mistake 5: Not claiming 80D for parents — many young employees pay for parent health insurance but only claim 80D for self.

In your 20s (income Rs 6-12 lakh): Optimise for the new regime — your deductions are usually too small to make the old regime worthwhile. Start a small ELSS SIP (Rs 5,000/month) for habit-building, take a term plan early when premiums are cheap (Rs 1 crore cover at age 25 = Rs 8,000-12,000/year), and start a health insurance policy of your own (Rs 5-10 lakh family floater).

In your 30s (income Rs 12-25 lakh): The decision becomes nuanced. If you have a home loan, child education expenses, and parent health insurance, the old regime starts winning. Max your 80C via ELSS (highest return), claim home loan interest under 24(b), start NPS Rs 50,000 under 80CCD(1B), and add 80D for parents (Rs 50,000 if senior citizens). Total deductions can easily reach Rs 5-6 lakh, swinging Rs 70,000-1.2 lakh in tax saved.

In your 40s (income Rs 25-50 lakh): Wealth accumulation phase — focus on maxing all available deductions. NPS Tier-1 becomes more attractive (closer to age 60 exit). Consider voluntary EPF contribution (VPF) up to Rs 2.5 lakh/year for tax-free interest. Restructure CTC to include NPS employer contribution (80CCD(2)) — this works in the new regime too.

In your 50s (income any): Pre-retirement period — shift focus to liquidity over tax deductions. PPF accounts close to maturity become valuable. Tax-saving FDs lose their appeal as the 5-year lock-in stretches beyond your earning years. NPS contributions before age 60 still get full deduction. Plan for the retirement tax position: pension income, annuity from NPS, and capital gains on equity portfolio.

Profile: 32-year-old software engineer in Bangalore, gross salary Rs 15 lakh, basic Rs 6 lakh, HRA Rs 3 lakh, special allowance Rs 6 lakh. Living in rented apartment paying Rs 25,000/month (Rs 3 lakh/year). EPF employee contribution: Rs 72,000/year. Has a Rs 30 lakh home loan in hometown (parents stay there) with Rs 2.5 lakh annual interest. Pays Rs 18,000 health insurance for self + parents.

New regime calculation: Gross Rs 15 lakh minus standard deduction Rs 75,000 = Rs 14.25 lakh taxable. Tax: 5% on (8-4) + 10% on (12-8) + 15% on (14.25-12) = Rs 20,000 + 40,000 + 33,750 = Rs 93,750. Add 4% cess = Rs 97,500. No deductions available.

Old regime calculation: Gross Rs 15 lakh minus standard deduction Rs 75,000 minus HRA exemption Rs 2.4 lakh (the minimum of HRA received, 50% basic, rent - 10% basic) minus 80C Rs 1.5 lakh (EPF Rs 72K + ELSS Rs 78K) minus 80CCD(1B) NPS Rs 50,000 minus 80D Rs 18,000 minus home loan interest 24(b) Rs 2 lakh (capped). Taxable income = Rs 15 lakh - 75K - 2.4L - 1.5L - 50K - 18K - 2L = Rs 7.67 lakh.

Old regime tax: 5% on (5-2.5) + 20% on (7.67-5) = Rs 12,500 + Rs 53,400 = Rs 65,900. Add 4% cess = Rs 68,540. Old regime saves Rs 28,960 over new regime. Plus the NPS Rs 50,000 contribution itself is invested wealth, not just an expense. Use the Old vs New Regime Calculator to run your own numbers.

Step 1: Determine your gross taxable salary after standard deduction of Rs 75,000. Step 2: List all available deductions — 80C investments, HRA, 80D premiums, NPS, home loan interest. Step 3: Run both regime comparisons using the calculator. Step 4: If old regime wins, ensure all instruments are fully invested by 31 March 2026. Step 5: Submit investment proofs to your employer by January-February 2026 to reduce TDS.

Common mistakes: Not investing the full Rs 1.5 lakh 80C limit (EPF alone rarely fills it), not tracking HRA rent receipts, missing the 80CCD(1B) NPS Rs 50,000 deduction, and filing under the wrong regime after the year ends.