Understanding Income Tax Slabs and Deductions

By Ratan Updated: 17 Oct 2026

Comprehensive guide to Indian income tax: compare Old vs New Tax Regime slabs, Section 87A rebate, standard deduction, 80C, 80D, and breakeven calculations.

Overview

Indian Income Tax Framework: Slabs, Deductions, and Strategic Choice

Navigating India's dual income tax regime requires evaluating your salary structure, actual household rent, investments, and home loan liabilities. Understanding how tax slabs compound and where deductions apply enables legal tax optimization and preserves annual cash flow.

1. Current Tax Slabs Under the New Tax Regime (Section 115BAC)

Income Slab	Applicable Tax Rate	Remarks / Surcharge
Up to ₹3,00,000	0% (Nil)	Basic exemption threshold for all individual taxpayers.
₹3,00,001 to ₹7,00,000	5%	Rebate under Section 87A cancels this tax if taxable income stays ≤ ₹7 Lakh.
₹7,00,001 to ₹10,00,000	10%	Taxable rate applies on income in this bracket.
₹10,00,001 to ₹12,00,000	15%	Marginal tax bracket for upper-middle income earners.
₹12,00,001 to ₹15,00,000	20%	Flat 20% on income earned between ₹12L and ₹15L.
Above ₹15,00,000	30%	Highest marginal slab rate (plus applicable surcharge & 4% health and education cess).

2. Key Deductions Available Under the Old Tax Regime

Section	Eligible Financial Instruments	Maximum Limit
Section 80C	EPF, ELSS Mutual Funds, PPF, Life Insurance Premium, Principal Repayment on Home Loan, SSY	₹1,50,000 per financial year
Section 80D	Health Insurance Premium for self, spouse, and dependent children (₹25,000); senior citizen parents (+₹50,000)	Up to ₹75,000 to ₹1,00,000 total
Section 80CCD(1B)	National Pension System (NPS) Tier-1 voluntary contribution	₹50,000 (over and above 80C)
Section 24(b)	Interest paid on self-occupied home loan	Up to ₹2,00,000 annually
Section 10(13A)	House Rent Allowance (HRA) for tenants paying actual residential rent	Calculated as least of actual HRA, rent minus 10% basic, or 50%/40% of basic

3. Step-by-Step Regime Selection Strategy

Sum Up Total Claimable Deductions: Add your Section 80C, 80D, HRA exemption, and home loan interest.
Compare Against Breakeven: If total deductions exceed ₹3.75 Lakh to ₹4.25 Lakh (depending on gross income bracket), the Old Regime generally delivers lower tax liability.
Consider Liquidity and Hassle: The New Regime eliminates the requirement to lock money into tax-saving ELSS or PPF funds purely for tax breaks, freeing up monthly cash flow for emergency savings or customized investment goals.

Frequently Asked Questions

How does the Section 87A tax rebate make income up to ₹7.75 Lakh completely tax-free?

Under the New Tax Regime (Section 115BAC), a salaried employee receives a flat standard deduction of ₹75,000, bringing taxable income on a ₹7,75,000 gross salary to ₹7,00,000. Under Section 87A, if taxable income does not exceed ₹7,00,000, an income tax rebate of up to ₹25,000 is applied, reducing net tax payable to zero.

What is the deduction breakeven point between the Old and New Tax Regimes?

For most middle-income earners earning between ₹10 Lakh and ₹15 Lakh, the Old Regime is beneficial only if total eligible deductions (Section 80C + 80D + HRA + Home Loan interest under Section 24b) exceed ₹3,75,000 to ₹4,25,000. If your total deductions are below this threshold, the New Regime delivers higher take-home pay with zero investment paperwork.

Can an individual switch between the Old and New Tax Regimes every year?

Salaried individuals without business income can freely switch between the Old and New Tax Regimes every financial year when filing their ITR by July 31. However, individuals with business or professional income (freelancers, consultants) can opt out of the New Regime only once in their lifetime; once they re-enter the New Regime, they cannot switch back.

Understanding Income Tax Slabs and Deductions

Overview

Indian Income Tax Framework: Slabs, Deductions, and Strategic Choice

1. Current Tax Slabs Under the New Tax Regime (Section 115BAC)

2. Key Deductions Available Under the Old Tax Regime

3. Step-by-Step Regime Selection Strategy

Frequently Asked Questions

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