What is the difference between the new and old tax regime?

The new regime (default from FY2023-24) offers lower slab rates but most deductions and exemptions are not available. The old regime allows deductions like 80C (up to Rs 1.5L), 80D (health insurance), HRA, and others, but has higher slab rates. The better choice depends on how many deductions you can claim.

What is Section 87A rebate?

Under the new regime, individuals with net taxable income up to Rs 7,00,000 get a rebate that reduces tax to zero. Under the old regime, a rebate up to Rs 12,500 applies if net taxable income is up to Rs 5,00,000. This effectively makes incomes at or below these thresholds tax-free.

Is surcharge or cess included?

Yes. A 4% Health and Education Cess is added on top of the computed tax. Surcharge (applicable on incomes above Rs 50 lakh) is also calculated and included in the final liability shown.

Does this tool cover all income sources?

The tool is designed for gross total income from salary or business. Capital gains taxed at special rates (STCG, LTCG) have separate tax treatments not covered here. Consult a chartered accountant for complex income situations.

What is the standard deduction for FY2024-25?

For salaried individuals, the standard deduction is Rs 75,000 under the new regime and Rs 50,000 under the old regime for FY2024-25, as per Budget 2024.

Is my income data sent to any server?

No. All calculations happen entirely in your browser using JavaScript. No data is transmitted to Top10k or any third party.

India Income Tax Calculator

Calculate your Indian income tax under the new and old regime for FY2024-25 side by side — enter gross income, pick deductions, get instant results.

Income & Deductions

Financial Year

FY 2024-25 (AY 2025-26)

Gross Annual Income (Rs)

Income Type

Deductions (Old Regime Only)

Section 80C (max Rs 1,50,000)

Section 80D — Health Insurance (max Rs 25,000)

HRA Exemption Claimed

Section 80CCD(1B) — NPS (max Rs 50,000)

Enter your income on the left and click Calculate Tax to see results.

New Regime

Default

Gross Income —

Standard Deduction —

Taxable Income —

Income Tax —

Surcharge —

87A Rebate —

Health & Education Cess (4%) —

Total Tax —

Effective Rate —

Monthly TDS Estimate —

Old Regime

Optional

Gross Income —

Total Deductions —

Taxable Income —

Income Tax —

Surcharge —

87A Rebate —

Health & Education Cess (4%) —

Total Tax —

Effective Rate —

Monthly TDS Estimate —

New Regime — Slab Breakdown

Old Regime — Slab Breakdown

Disclaimer: This calculator provides estimates only. Consult a chartered accountant for accurate tax filing advice. Slab rates as per Finance Act 2024.

Summary

This calculator estimates your Indian income tax liability for Financial Year 2024-25 (Assessment Year 2025-26) under both the new default tax regime and the old tax regime. Enter your gross annual income and eligible deductions such as 80C, 80D, and HRA to instantly see a comparison. The tool applies current government slab rates, the standard deduction, and the rebate under Section 87A where applicable — all computation happens in your browser with no data sent to any server.

How it works

Enter your gross annual income (salary, business income, or other sources combined).
Select common deductions available under the old regime (80C, 80D, HRA, NPS, standard deduction).
The calculator applies FY2024-25 slab rates for both the new and old regime simultaneously.
Section 87A rebate (up to Rs 25,000 for new regime; up to Rs 12,500 for old regime) is applied automatically when eligible.
Review the side-by-side comparison table and choose the regime that results in lower tax.

Use cases

Salaried employees deciding which tax regime to opt for at the start of a financial year.
Freelancers and consultants estimating quarterly advance tax installments.
HR and payroll teams estimating TDS deductions for employees.
Finance students learning how Indian progressive tax slabs work.
Individuals planning investments under 80C to maximize old-regime deductions.
Anyone filing ITR who wants to double-check the tax payable before submission.

Frequently Asked Questions

Last updated: 2026-05-28 · Reviewed by Nham Vu