How to Calculate Income Tax in India: Old vs New Tax Regime Complete Guide
Comprehensive guide on calculating Indian personal income tax. Understand the latest tax slabs, standard deductions, Section 87A rebate, and exemptions under Old vs New Tax Regimes.
Filing income tax in India requires choosing between two fundamentally distinct systems: the traditional Old Tax Regime (which allows dozens of exemptions and deductions) and the New Tax Regime (which offers lower tax slabs in exchange for relinquishing most traditional exemptions).
Understanding how your taxable income is derived ensures you avoid tax overpayment, plan your investments wisely, and elect the regime that yields maximum take-home salary.
New Tax Regime: Slabs & Standard Deduction
The New Tax Regime is the default tax option for individual taxpayers. It features revised progressive slab rates and an enhanced Standard Deduction for salaried employees:
- Up to ₹3,00,000: Nil (0% tax)
- ₹3,00,001 to ₹7,00,000: 5%
- ₹7,00,001 to ₹10,00,000: 10%
- ₹10,00,001 to ₹12,00,000: 15%
- ₹12,00,001 to ₹15,00,000: 20%
- Above ₹15,00,000: 30%
- Section 87A Rebate: Under the New Regime, resident individuals with total taxable income up to ₹7,00,000 pay zero tax after applying the Section 87A tax rebate.
- Salaried Standard Deduction: Salaried taxpayers enjoy a flat standard deduction of ₹75,000 under the New Regime, effectively making income up to ₹7.75 Lakhs tax-free.
Old Tax Regime: Traditional Deductions
The Old Tax Regime features steeper base tax rates (starting at 20% for income above ₹5 Lakhs), but allows taxpayers to deduct substantial expenses and savings before arriving at net taxable income:
- 1Section 80C: Up to ₹1,50,000 for EPF, PPF, ELSS mutual funds, life insurance premiums, and home loan principal repayment.
- 2Section 80D: Health insurance premium deduction up to ₹25,000 for self/family, and an additional ₹50,000 for senior citizen parents.
- 3Section 24(b): Up to ₹2,00,000 interest deduction on home loans for self-occupied properties.
- 4House Rent Allowance (HRA): Exemption calculated based on actual rent paid, salary, and city tier.
- 5Standard Deduction: Flat ₹50,000 for salaried employees under the Old Regime.
Step-by-step example: Which regime saves more money?
Consider a salaried professional earning an annual gross salary of ₹12,00,000:
- Scenario A (Minimal Deductions): If you only have standard EPF and no home loan, the New Tax Regime offers substantially lower tax liability because of its wider, gentler tax brackets.
- Scenario B (High Deductions): If you pay home loan interest (₹2L), max out 80C (₹1.5L), claim HRA (₹1.5L), and have medical insurance (₹25k) — total deductions exceed ₹5.25 Lakhs. Here, the Old Regime may result in a lower net tax payout.
- Health and Education Cess: In both regimes, a mandatory 4% cess is levied on the aggregate income tax amount.
How to calculate your taxes accurately
Before filing your ITR (Income Tax Return), calculate your taxable income on an automated Income Tax Calculator. Input your basic pay, allowances, capital gains, and eligible deductions. Compare both figures side by side before submitting Form 10-IEA if opting out of the default regime.
Frequently Asked Questions
Can I switch between the Old and New Tax Regime every year?
Salaried taxpayers with no business income can switch between the Old and New Regimes each financial year when filing their ITR. Individuals with business or professional income can only switch once in a lifetime.
Is Section 80C deduction available in the New Tax Regime?
No. The New Tax Regime disallows Section 80C, 80D, HRA, and home loan interest deductions in exchange for lower standard slab rates.
What is the surcharge rate for high-income earners in India?
Surcharges range from 10% to 25% for taxable incomes exceeding ₹50 Lakhs, ₹1 Crore, and ₹2 Crores, capped at 25% under the New Tax Regime.
About LinkQRPro Editorial Desk
This tutorial was researched, authored, and technically tested across modern desktop and mobile browsers by the LinkQRPro editorial group. We regularly review courier guidelines and document standards to keep our instructions reliable and up to date.
Found something outdated or have feedback? Report a correction to our editors.