Income Tax Calculator India - New vs Old Regime

Income Tax Calculator India - New vs Old Regime, Explained

The single most important tax decision for every Indian salaried professional in 2025-26 is: which regime? Both regimes apply tax slabs to your taxable income - that is, your gross income minus eligible deductions and exemptions. The New Regime simplified this with lower slabs and a ₹75,000 standard deduction, making taxable income up to ₹12 Lakh effectively zero-tax via the Section 87A rebate. The Old Regime lets you claim additional deductions under 80C, 80D, HRA and home loan interest to reduce taxable income further - beneficial only if your total deductions are large enough to overcome the New Regime's lower slab advantage. For a complete breakdown of every deduction available, see our New vs Old Tax Regime guide.

This income tax calculator India computes both regimes simultaneously, shows you exactly how much each one costs and lets you model the impact of every deduction - so you can make a confident decision before the tax declaration season. Income tax on salary is deducted monthly as TDS (Tax Deducted at Source) based on your projected annual liability; use our TDS Calculator to verify your monthly TDS separately.

New Regime Tax Slabs - FY 2025-26 (Budget 2025)

Section 87A Rebate: Zero tax if taxable income ≤ ₹12,00,000. With ₹75,000 Standard Deduction, gross salary up to ₹12,75,000 = ₹0 tax. Health and Education Cess (4%) is added on final income tax. Surcharge applies above ₹50L total income.

Income Tax Calculator India - Which Regime Wins at Your Income?

Here's the definitive comparison for a salaried individual with standard deductions (₹1.5L 80C + ₹25K 80D + ₹50K SD Old Regime vs ₹75K SD New Regime, no HRA or home loan):

Income Tax Calculator India - Effective Rate vs Marginal Rate

This is the most misunderstood aspect of income tax in India. You might be "in the 30% bracket" - meaning your marginal tax rate is 30% on the last rupee - but your effective tax rate (total tax as a percentage of total income) is dramatically lower because progressive slabs apply only to each taxable income slice. Understanding this prevents panic and helps you make rational decisions about job offers and investments.

The marginal rate tells you how much tax you pay on the last rupee you earned. The effective rate tells you the truth about your total tax burden. At ₹30 LPA with New Regime, you keep over 84% of your income - far better than most people expect when they hear "30% tax bracket." To see how much of your investment return you actually keep after inflation and tax, try the Real Return Calculator.

Income Tax Calculator India - When Does Old Regime Win?

The Old Regime only makes sense if your deductions are large enough to bring your taxable income down far enough to overcome the advantage of the New Regime's lower slabs. Here's exactly how much deduction you need for Old Regime to match or beat the New Regime - the "break-even deduction" at each salary level:

Income Tax Act 2025: What Changed from April 1, 2026

The Income Tax Act 1961 was replaced by the Income Tax Act 2025 from April 1, 2026. The headline change is structural, not financial: tax rates, slabs, and deduction amounts are unchanged. What changed is the framework, language, and compliance architecture.

What Actually Changed (And What Did Not)

The practical implication: if you were planning your taxes based on FY 2025-26 rules, you do not need to relearn anything. The Act 2025 codifies the same framework with cleaner language. The complete walkthrough of what the new Income Tax Act 2025 means for salaried taxpayers, freelancers, and investors covers every renamed section and structural change with side-by-side comparisons to the old Act.

Legal Ways to Reduce Income Tax in India 2026

These are the highest-impact deductions available under the old regime for a salaried employee, ranked by typical saving at the 30% slab:

HRA exemption (up to ₹3L+ for metro employees): The single biggest deduction for city-based renters. The exact exemption depends on the least of three amounts: HRA received, rent minus 10% of basic, or 50%/40% of basic. Bengaluru, Pune, Hyderabad, and Ahmedabad now qualify for the 50% metro rate under the new Act. Use the HRA exemption calculation to find your exact tax-free amount before selecting your regime.

Section 80C (₹1.5L limit): EPF, PPF, ELSS, NSC, home loan principal, children's tuition: all qualify. Most salaried employees already hit this through EPF alone.

Home loan interest Section 24(b) (₹2L limit): Only under old regime, self-occupied property. Combined with 80C principal repayment, home loan owners save ₹1.05L+ in tax annually at 30% slab.

80CCD(2) Employer NPS (no cap, both regimes): The only deduction available under both regimes. If your employer routes part of CTC into NPS, up to 14% of basic is exempt with no upper limit.

80D Health insurance (₹25-75K limit): Self + family + parents. Senior citizen parents give maximum ₹75,000 total deduction.

Mutual Fund and Capital Gains Tax: Calculated Separately

Income tax on salary and special-rate income like mutual fund gains are calculated differently and cannot be netted against each other. Equity fund LTCG (held 12+ months) is taxed at 12.5% on gains above ₹1.25L/year; this rate applies regardless of which income tax regime you choose and does not benefit from the ₹12L rebate under Section 87A. Use the mutual fund capital gains tax calculation for your equity, debt, and hybrid fund redemptions separately from this salary tax calculator. Also see the updated old vs new regime analysis for April 2026 which covers the complete deduction landscape under the new Act.

Income Tax Calculator India - FAQs