What is Income Tax in India?
The Income Tax Calculator helps you calculate exact tax liability for Assessment Year (AY) 2026-27 and 2027-28 covering Financial Years 2025-26 and 2026-27. It automatically compares Old Tax Regime (with deductions like 80C, HRA, home loan) and New Tax Regime (lower rates, higher standard deduction) to recommend the best option.
The calculator includes age-based exemptions for senior citizens, Section 87A rebate, Health & Education Cess (4%), and provides instant regime comparison with detailed tax breakdown.
How is Income Tax Calculated? (Step-by-Step)
Income tax in India is calculated using progressive tax slabs where different portions of income are taxed at different rates. Here's the step-by-step process:
- Calculate Gross Total Income: Add salary, house property income, capital gains, other sources
- Deduct Standard Deduction: ₹50,000 (Old) or ₹75,000 (New) for salaried individuals
- Apply Chapter VIA Deductions: 80C (₹1.5L), 80D (₹25-50k), HRA, home loan interest (Old Regime only)
- Calculate Taxable Income: Gross Income - Standard Deduction - Chapter VIA Deductions
- Apply Tax Slabs: Calculate tax on each slab portion (5%, 10%, 15%, 20%, 30%)
- Check Section 87A Rebate: Full rebate if income ≤ ₹7L (New) or ≤ ₹5L (Old)
- Add Surcharge: If income exceeds ₹50 lakhs (10-37% depending on income)
- Add Health & Education Cess: 4% on (Tax + Surcharge)
🧮Example: ₹12 Lakh Salary Tax Calculation (New Regime)
Deductions & Exemptions Explained
Major Deductions (Old Regime Only):
- Section 80C (up to ₹1.5 lakhs): EPF, PPF, ELSS, life insurance, NSC, home loan principal, tuition fees
- Section 80CCD(1B) (up to ₹50,000): Additional deduction for NPS contribution (over and above 80C)
- Section 80D (up to ₹25-50k): Health insurance premium (self: ₹25k, parents: ₹25k, senior parents: ₹50k)
- Section 24(b) (up to ₹2 lakhs): Home loan interest for self-occupied property
- Section 10(13A): HRA exemption (least of: actual HRA, rent - 10% of salary, 50% of salary for metro/40% non-metro)
- Section 80TTA/TTB (up to ₹10-50k): Interest on savings account (₹10k general, ₹50k senior citizens)
Deductions in New Regime:
- Standard Deduction: ₹75,000 (only this is allowed)
- Employer NPS Contribution: Under Section 80CCD(2) (up to 10% of salary)
- NOT Allowed: 80C, 80D, HRA, LTA, home loan interest, 80G donations, etc.
What is Surcharge on Income Tax?
Surcharge is additional tax levied on high-income earners. It is calculated on income tax amount (before cess) and then 4% cess is added on total:
| Income Range | Surcharge Rate |
|---|---|
| Up to ₹50 lakhs | No Surcharge |
| ₹50L - ₹1 Crore | 10% |
| ₹1 Cr - ₹2 Crore | 15% |
| ₹2 Cr - ₹5 Crore | 25% |
| Above ₹5 Crore | 37% |
Example: Income = ₹60 lakhs, Tax = ₹10 lakhs → Surcharge (10%) = ₹1 lakh → Cess (4%) = ₹44,000 → Total Tax = ₹11,44,000
Old vs New Regime: Detailed Comparison
| Feature | Old Regime | New Regime |
|---|---|---|
| Tax Slabs | 4 slabs (5%, 20%, 30%) | 6 slabs (5%, 10%, 15%, 20%, 30%) |
| Standard Deduction | ₹50,000 | ₹75,000 |
| Section 80C (₹1.5L) | Allowed | Not Allowed |
| HRA Exemption | Allowed | Not Allowed |
| Home Loan Interest | Allowed (₹2L) | Not Allowed |
| Section 87A Rebate | Up to ₹5L income | Up to ₹7L income |
| LTA (Leave Travel) | Allowed | Not Allowed |
| Default Choice | No | Yes (from FY 2023-24) |
| Best For | High deductions (home loan, HRA, 80C all maxed) | Low deductions, simple salary income |
Which Tax Regime Should You Choose?
Choose New Regime If:
- Income below ₹7 lakhs (zero tax with rebate)
- No home loan or HRA benefits
- Deductions less than ₹3.75 lakhs
- Want simplicity without proof submission
- Freelancer/consultant with no HRA
Choose Old Regime If:
- Home loan with high interest (₹2L deduction)
- High HRA (₹3-4L exemption in metros)
- Maxed-out 80C investments (₹1.5L)
- Total deductions exceed ₹3.75 lakhs
- Senior citizens with high medical expenses (80D)
General Rule: New Regime saves more tax for income up to ₹12 lakhs with minimal deductions. Old Regime is better when total deductions (HRA + 80C + home loan) exceed ₹3.75 lakhs. Always use calculator for accurate comparison!
How to Use This Income Tax Calculator
- Select Financial Year: FY 2025-26 (for ITR filing in 2026) or FY 2026-27 (for planning ahead).
- Choose Age Category: Below 60, 60-80 (senior), or 80+ (super senior). Affects basic exemption in Old Regime.
- Enter Gross Annual Income: Total salary before any deductions (CTC minus employer PF contribution).
- Add Total Deductions: Sum of 80C (₹1.5L), 80D (₹25-50k), HRA exemption, home loan interest, etc. Applies only to Old Regime.
- Review Regime Comparison: Calculator shows tax for both regimes and highlights which one saves more.
- Check Tax Breakdown: See taxable income calculation, slab-wise tax, and final amount with cess.
- Save calculation for future reference or share with CA/family via WhatsApp.