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Indian Tax Regime Guide
Section 115BAC comparison: Slab rates, standard deductions, and 80C exemptions.
Indian Income Tax Comparison: Old Tax Regime vs. New Tax Regime Explained
The Indian tax framework offers taxpayers a choice between two regimes. This guide analyzes tax slabs, eligible deductions, and mathematical models to help you select the most tax-efficient regime.
1. Overview of the Old Indian Tax Regime
The Old Tax Regime features higher tax rate slabs but allows taxpayers to reduce their taxable income through deductions. Taxpayers can claim deductions under Section 80C (EPF, PPF, ELSS, life insurance up to INR 1.5 Lakh), Section 80D (health insurance), Section 24 (home loan interest up to INR 2 Lakh), and House Rent Allowance (HRA). This regime rewards individuals with active personal savings and home loans.
2. Understanding the Simplified New Tax Regime
The New Tax Regime, introduced under Section 115BAC, offers lower tax rate slabs but strips away almost all exemptions and deductions. The standard deduction of INR 75,000 remains applicable. The new regime is designed to simplify tax filing and reduce administrative overhead, making it appealing to young professionals and individuals without home loans or structured savings investments.
3. Comparative Analysis of Tax Rate Slabs
Under the New Regime (FY 2024-25 / FY 2025-26), income up to INR 3 Lakh is exempt from tax, with progressive 5% tax slabs increasing up to 30% for income above INR 15 Lakh. In contrast, the Old Regime features a tax-free threshold of INR 2.5 Lakh, and the tax rates rise quickly to 20% at INR 5 Lakh and 30% at INR 10 Lakh. Tax rebates under Section 87A also differ, with higher tax-free limits under the new regime.
4. The Mathematical Break-Even Point for Deductions
To determine which regime is better, calculate the break-even deduction threshold. For example, an individual earning INR 15 Lakh per year under the Old Regime needs at least INR 3.75 Lakh in deductions to match the lower tax liability of the New Regime. If their total deductions are below this break-even point, filing under the New Regime yields a lower tax liability, saving them money.
5. Building a Local Tax Regimes Calculator
A client-side regimes comparison tool takes your salary, HRA, investment allocations, and interest inputs, calculates deductions, and computes tax liabilities under both regimes side-by-side. By running this calculation locally in the browser, users can safely experiment with their private financial data without uploading salary details to external servers.