Complete Guide: Income Tax Calculation in India (New vs Old Tax Regime)
Understanding personal income tax in India has undergone a major paradigm shift with the introduction and subsequent enhancement of the New Tax Regime under Section 115BAC. As of the Union Budget for Financial Year 2024-25 and 2025-26, the New Tax Regime is the default tax regime for all individual taxpayers, Hindu Undivided Families (HUFs), and Associations of Persons (AOPs).
However, Indian taxpayers retain the freedom to opt for the Old Tax Regime during return filing if they claim significant tax deductions such as House Rent Allowance (HRA), Home Loan Interest (Section 24b), Life Insurance and EPF (Section 80C), or Medical Insurance premiums (Section 80D).
UtilityHub's Free Income Tax Calculator provides an instantaneous, side-by-side comparative analysis of both regimes. It automatically applies the latest ₹75,000 standard deduction, calculates Section 87A rebate benefits, and recommends the exact regime that saves you maximum hard-earned money.
New Tax Regime Slab Rates (Budget 2024 Revision)
The Union Budget introduced expanded tax slabs for the New Regime, providing greater disposable income in the hands of middle-class salaried employees:
| Income Slab (₹) | Tax Rate (%) | Remarks |
|---|---|---|
| Up to ₹3,00,000 | Nil (0%) | Basic exemption limit |
| ₹3,00,001 to ₹7,00,000 | 5% | Eligible for Section 87A rebate |
| ₹7,00,001 to ₹10,00,000 | 10% | Reduced from 15% previously |
| ₹10,00,001 to ₹12,00,000 | 15% | Progressive tax bracket |
| ₹12,00,001 to ₹15,00,000 | 20% | Middle-to-senior management slab |
| Above ₹15,00,000 | 30% | Highest marginal income slab |
Why Salary up to ₹7.75 Lakhs Pays Zero Tax
Under the revised New Tax Regime:
- Salaried individuals receive an automatic Standard Deduction of ₹75,000 without requiring any expense receipts or documentation.
- Subtracting ₹75,000 from a gross income of ₹7,75,000 reduces the taxable income to exactly ₹7,00,000.
- Under Section 87A, individual residents whose taxable income does not exceed ₹7,00,000 receive a 100% tax rebate of up to ₹25,000.
- Consequently, total tax payable becomes ₹0 (Zero Rupees).
Old Tax Regime Slabs & Traditional Deductions
Under the Old Tax Regime, the income slabs are:
- Up to ₹2,50,000: Nil
- ₹2,50,001 to ₹5,00,000: 5% (Rebate under Section 87A covers income up to ₹5,00,000)
- ₹5,00,001 to ₹10,00,000: 20%
- Above ₹10,00,000: 30%
However, the Old Regime permits significant itemized deductions:
- Standard Deduction: ₹50,000 for salaried employees.
- Section 80C: Up to ₹1,50,000 for EPF, PPF, ELSS mutual funds, tuition fees, and home loan principal.
- Section 80D: Up to ₹25,000 for self/family medical insurance, and up to ₹50,000 for senior citizen parents.
- Section 24(b): Up to ₹2,00,000 on home loan interest for self-occupied properties.
- House Rent Allowance (HRA): Partial or full exemption under Section 10(13A) for rent paid in non-owned premises.
Break-Even Point: How to Decide Between Old vs New Regime
The decision between the Old and New Regime depends entirely on your total permissible deductions:
- If your total eligible deductions are less than ₹3,75,000, the New Tax Regime is almost universally superior, requiring zero paperwork and delivering lower effective tax rates.
- If your eligible deductions (80C + 80D + HRA + Home Loan Interest) exceed ₹4,00,000, the Old Tax Regime may yield higher tax savings.
Health & Education Cess
In both tax regimes, an additional 4% Health and Education Cess is levied on the aggregate income tax amount before final discharge.
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