Income Tax in India — Overview FY 2026-27
Income tax is the most important direct tax in India. Every individual earning above the basic exemption limit must file an Income Tax Return (ITR). Understanding how income tax is calculated helps you plan better, save more, and avoid surprises at year end. This comprehensive guide covers everything about income tax calculation for FY 2026-27 (Tax Year 2026-27).
From April 1, 2026, India has implemented the new Income Tax Act 2025 which introduces the concept of "Tax Year" replacing the older terminology of Financial Year and Assessment Year. However, the tax slabs and rates remain unchanged from FY 2025-26.
New Tax Regime Slabs FY 2026-27
The New Tax Regime is the default regime in India. It offers lower tax rates but fewer deductions compared to the old regime.
| Income Range | Tax Rate | Tax on Slab | Cumulative Tax |
|---|---|---|---|
| ₹0 – ₹4,00,000 | 0% | ₹0 | ₹0 |
| ₹4L – ₹8L | 5% | ₹20,000 | ₹20,000 |
| ₹8L – ₹12L | 10% | ₹40,000 | ₹60,000 |
| ₹12L – ₹16L | 15% | ₹60,000 | ₹1,20,000 |
| ₹16L – ₹20L | 20% | ₹80,000 | ₹2,00,000 |
| ₹20L – ₹24L | 25% | ₹1,00,000 | ₹3,00,000 |
| Above ₹24L | 30% | 30% on balance | ₹3,00,000+ |
Standard Deduction: ₹75,000 for salaried employees (deducted before applying slabs)
87A Rebate: If taxable income ≤ ₹12L, tax = ₹0 (zero tax)
Effectively tax-free up to ₹12.75 Lakhs (₹12L taxable + ₹75K standard deduction = ₹12.75L gross income)
Old Tax Regime Slabs FY 2026-27
| Income Range | Below 60 Years | Senior 60-79 Years | Super Senior 80+ Years |
|---|---|---|---|
| Up to ₹2,50,000 | 0% | 0% | 0% |
| ₹2.5L – ₹3L | 5% | 0% | 0% |
| ₹3L – ₹5L | 5% | 5% | 0% |
| ₹5L – ₹10L | 20% | 20% | 20% |
| Above ₹10L | 30% | 30% | 30% |
Standard Deduction: ₹50,000 | 87A Rebate: Taxable income ≤ ₹5L = zero tax
Surcharge Rates — For High Income Earners
Surcharge is an additional tax levied on your income tax if your income crosses ₹50 lakhs:
| Income Range | Surcharge (New Regime) | Surcharge (Old Regime) |
|---|---|---|
| Up to ₹50 Lakhs | Nil | Nil |
| ₹50L – ₹1 Crore | 10% | 10% |
| ₹1Cr – ₹2Cr | 15% | 15% |
| ₹2Cr – ₹5Cr | 25% | 25% |
| Above ₹5 Crore | 25% (capped) | 37% |
Health & Education Cess
4% cess is applied on (Basic Tax + Surcharge) for ALL taxpayers regardless of income. This cess funds government health and education programs.
Step by Step Tax Calculation — Examples
Example 1: ₹12 Lakh Income (New Regime)
Standard Deduction: ₹75,000
Taxable Income: ₹11,25,000
Tax Calculation:
0 – 4L = ₹0
4L – 8L = ₹20,000
8L – 11.25L = ₹32,500
Basic Tax = ₹52,500
Taxable Income ≤ ₹12L → 87A Rebate Applied
Tax After Rebate = ₹0
Cess = ₹0
TOTAL TAX = ₹0 ✅ Zero Tax!
Example 2: ₹15 Lakh Income (New Regime)
Standard Deduction: ₹75,000
Taxable Income: ₹14,25,000
Tax Calculation:
0 – 4L = ₹0
4L – 8L = ₹20,000 (5%)
8L – 12L = ₹40,000 (10%)
12L – 14.25L = ₹33,750 (15%)
Basic Tax = ₹93,750
Cess 4% = ₹3,750
TOTAL TAX = ₹97,500 ✅
Example 3: ₹1.5 Crore Income (New Regime)
Standard Deduction: ₹75,000
Taxable Income: ₹1,49,25,000
Basic Tax = ₹40,57,500
Surcharge 15% (income >1Cr) = ₹6,08,625
Tax + Surcharge = ₹46,66,125
Cess 4% = ₹1,86,645
TOTAL TAX = ₹48,52,770 ✅
New Regime vs Old Regime — Complete Comparison
| Gross Income | New Regime Tax | Old Regime Tax | Better Choice |
|---|---|---|---|
| ₹5 Lakhs | ₹0 | ₹0 | Equal |
| ₹8 Lakhs | ₹0 | ₹46,800 | New ✅ |
| ₹12 Lakhs | ₹0 | ₹1,17,000 | New ✅ |
| ₹15 Lakhs | ₹97,500 | ₹2,57,400 | New ✅ |
| ₹20 Lakhs | ₹1,92,400 | ₹3,90,000 | New ✅ |
| ₹50 Lakhs | ₹10,99,800 | ₹14,07,600 | New ✅ |
Key Finding: For most salaried individuals with standard deductions only, the New Regime is better in FY 2026-27.
Key Deductions Under Old Regime
| Section | Deduction | Maximum Amount | Examples |
|---|---|---|---|
| 80C | Tax saving investments | ₹1,50,000 | PPF, ELSS, LIC, EPF, Home Loan Principal |
| 80D | Health insurance premium | ₹25,000 (₹50K senior) | Medical insurance for self and family |
| 24B | Home loan interest | ₹2,00,000 | Self-occupied property interest |
| 80CCD(1B) | NPS contribution | ₹50,000 | National Pension System additional |
| 80G | Donations | 50-100% of donation | PM Relief Fund, NGOS |
| HRA | House Rent Allowance | Depends on salary & city | If living in rented house |
| LTA | Leave Travel Allowance | Actual travel cost | Domestic travel 2 times in 4 years |
Advance Tax — Who Must Pay?
If your total tax liability exceeds ₹10,000 in a year, you must pay advance tax in installments:
| Installment | Due Date | Percentage |
|---|---|---|
| First | 15 June 2026 | 15% of annual tax |
| Second | 15 September 2026 | 45% of annual tax |
| Third | 15 December 2026 | 75% of annual tax |
| Fourth | 15 March 2027 | 100% of annual tax |
Failure to pay advance tax results in interest under Section 234B and 234C at 1% per month.
ITR Filing Deadlines
| Category | Deadline |
|---|---|
| Salaried & Non-Audit Cases (FY 2025-26) | 31 July 2026 |
| Audit Cases (Business) | 31 October 2026 |
| Belated Return (FY 2025-26) | 31 December 2026 |
| Updated Return (ITR-U) | Within 2 years of original due date |
Tax on Different Income Sources
| Income Type | Tax Treatment | Rate |
|---|---|---|
| Salary | Normal slab rates | As per slab |
| Bank FD Interest | Added to income | As per slab |
| Long Term Capital Gains (Equity) | Separate taxation | 10% above ₹1L (12.5% from 2024) |
| Short Term Capital Gains (Equity) | Separate taxation | 15% (20% from 2024) |
| Dividend | Added to income | As per slab + TDS 10% |
| Rental Income | 30% standard deduction allowed | As per slab on 70% |
| Business Income | After expenses | As per slab |
Frequently Asked Questions
Q: Is income up to ₹12.75 lakhs really completely tax-free?
Yes! For salaried employees under the new regime: ₹75,000 standard deduction + ₹12,00,000 87A rebate limit = effectively zero tax up to ₹12.75 lakh gross income.
Q: Can I choose between new and old regime every year?
Salaried individuals (no business income) can switch between regimes every year while filing ITR. Those with business income can switch from new to old regime only once.
Q: What documents do I need to file ITR?
Key documents: Form 16 from employer, Bank statements, AIS (Annual Information Statement) from income tax portal, Investment proofs for old regime deductions, Home loan statement if applicable.
Q: Is this calculator applicable to NRIs?
NRIs have different tax rules. They pay tax only on income earned in India. The tax slabs are the same but many deductions are not available. Consult a tax advisor for NRI-specific calculations.
Q: What is the penalty for not filing ITR?
If you don't file ITR and tax is due, you pay interest at 1% per month under Section 234A plus late fee under Section 234F. In serious cases, prosecution can also happen for tax evasion above ₹25 lakhs.