Income Tax Calculator India — FY 2025-26

Calculate your income tax under the Old and New tax regimes for the financial year 2025-26 (AY 2026-27).

Income Slab (₹) Rate Tax (₹)
Tax Before Cess
₹0
Surcharge
₹0
Health & Edu. Cess (4%)
₹0
Total Tax Payable
₹0
Effective Tax Rate
0%
Monthly Tax
₹0

How Indian Income Tax Works

India's income tax system is governed by the Income Tax Act, 1961 and administered by the Central Board of Direct Taxes (CBDT). Every individual, Hindu Undivided Family (HUF), and other assessable entities whose gross total income exceeds the basic exemption limit must file an income tax return (ITR) and pay tax at the rates prescribed for the applicable financial year. The tax structure follows a progressive slab system, meaning higher income is taxed at higher rates, ensuring that the tax burden is proportional to earning capacity.

Starting from FY 2023-24, the New Tax Regime became the default option for all taxpayers. However, individuals can still opt for the Old Tax Regime if it benefits them. The key difference lies in the trade-off: the New Regime offers lower tax rates spread across seven slabs but eliminates most deductions and exemptions, while the Old Regime retains higher base rates but allows taxpayers to claim over 70 deductions under Sections 80C, 80D, 80E, 80G, 80TTA, and exemptions like HRA (use our HRA Calculator to compute your exemption) and Leave Travel Allowance (LTA).

Your total income includes salary, house property income, capital gains, business or professional income, and income from other sources like interest and dividends. After aggregating all heads of income and applying eligible deductions, you arrive at the total taxable income, which is then taxed according to the applicable slab rates. A 4% Health and Education Cess is levied on the final tax amount, and surcharge applies for high-income earners.

Income Tax Calculation Formula and Methodology

Step 1: Gross Total Income = Salary + House Property + Capital Gains + Business Income + Other Sources
Step 2: Taxable Income = Gross Total Income − Standard Deduction − Chapter VI-A Deductions (Old Regime only)
Step 3: Basic Tax = Σ (Income in each slab × Applicable Slab Rate)
Step 4: Tax after Rebate = Basic Tax − Section 87A Rebate (if eligible)
Step 5: Total Tax = (Tax after Rebate + Surcharge) × 1.04 (Cess)

Worked Example (New Regime, Salaried, ₹15,00,000 Gross Income):

Key Terms You Should Know

Gross Total Income (GTI): The aggregate of income from all five heads — salary, house property, business/profession, capital gains, and other sources — before applying any deductions under Chapter VI-A. This is your starting figure for tax computation.

Standard Deduction: A flat deduction available to salaried individuals and pensioners. Under the New Regime for FY 2025-26, this is ₹75,000. Under the Old Regime, it remains ₹50,000. No receipts or proof of expenditure are required to claim it.

Section 80C Deduction: Available only under the Old Regime, this allows up to ₹1,50,000 in deductions for investments in PPF (calculate returns with our PPF Calculator), ELSS mutual funds, NSC, life insurance premiums, children's tuition fees, and home loan principal repayment, among other specified instruments.

Section 87A Rebate: A tax rebate for resident individuals with taxable income below specified thresholds. Under the New Regime, taxable income up to ₹12,75,000 qualifies for a full rebate, making the tax payable zero. Under the Old Regime, the threshold is ₹5,00,000 with a maximum rebate of ₹12,500.

Surcharge: An additional tax on high earners. Applicable at 10% for income ₹50L–₹1Cr, 15% for ₹1Cr–₹2Cr, 25% for ₹2Cr–₹5Cr, and 37% above ₹5Cr. The New Regime caps surcharge at 25%.

Health and Education Cess: A 4% cess applied on total tax (including surcharge). This funds government health and education initiatives and is non-deductible.

Old Regime vs New Regime: A Detailed Comparison

Choosing between the Old and New Tax Regimes is one of the most important financial decisions Indian taxpayers face each year. The right choice depends entirely on how many deductions and exemptions you can legitimately claim. Taxpayers with significant investments in PPF, ELSS, NPS (use our NPS Calculator to plan contributions), and those paying home loan EMIs or health insurance premiums often find the Old Regime more beneficial. Conversely, those who prefer simplicity or have few qualifying investments tend to save more under the New Regime.

Feature New Regime (FY 2025-26) Old Regime (FY 2025-26)
Number of Slabs 7 slabs 4 slabs
Basic Exemption Limit ₹4,00,000 ₹2,50,000 (Below 60)
₹3,00,000 (60-80)
₹5,00,000 (Above 80)
Maximum Tax Rate 30% (above ₹24L) 30% (above ₹10L)
Standard Deduction ₹75,000 ₹50,000
Section 80C (₹1.5L) Not Available Available
Section 80D (Health Insurance) Not Available Up to ₹75,000
HRA Exemption Not Available Available (varies)
Home Loan Interest (Sec 24b) Not Available Up to ₹2,00,000
NPS (Sec 80CCD(1B)) Not Available Additional ₹50,000
Section 87A Rebate Limit ₹12,75,000 taxable income ₹5,00,000 taxable income

As a general rule of thumb, if your total deductions under the Old Regime (80C + 80D + HRA + home loan interest + NPS) exceed approximately ₹3.75 lakh, you are likely better off staying with the Old Regime. Below that threshold, the New Regime usually produces lower tax.

Practical Examples

Scenario 1: Salaried Individual, ₹8,00,000 Gross Income, New Regime

  • Taxable Income = ₹8,00,000 − ₹75,000 = ₹7,25,000
  • Tax on ₹0 – ₹4,00,000 = ₹0
  • Tax on ₹4,00,001 – ₹7,25,000 = ₹3,25,000 × 5% = ₹16,250
  • Section 87A rebate applies (₹7,25,000 < ₹12,75,000) → Tax = ₹0

A person earning ₹8 lakh pays absolutely zero tax under the New Regime thanks to the enhanced Section 87A rebate.

Scenario 2: Salaried Individual, ₹20,00,000 Gross Income, Comparing Both Regimes

  • New Regime: Taxable = ₹19,25,000. Tax = ₹0 + ₹20,000 + ₹40,000 + ₹60,000 + ₹65,000 = ₹1,85,000. Cess = ₹7,400. Total = ₹1,92,400
  • Old Regime (with deductions): Assume 80C = ₹1,50,000, 80D = ₹25,000, HRA = ₹2,40,000, Standard Deduction = ₹50,000. Taxable = ₹20,00,000 − ₹4,65,000 = ₹15,35,000. Tax = ₹0 + ₹12,500 + ₹1,00,000 + ₹1,60,500 = ₹2,73,000. Cess = ₹10,920. Total = ₹2,83,920

In this case, the New Regime saves ₹91,520 despite the taxpayer claiming ₹4.65 lakh in deductions under the Old Regime. This demonstrates that even substantial deductions may not always make the Old Regime advantageous.

Scenario 3: Senior Citizen (Age 65), ₹10,00,000 Income, Old Regime

  • Basic exemption limit = ₹3,00,000 (senior citizen)
  • Deductions: 80C = ₹1,50,000, 80D = ₹50,000 (self + senior parents), 80TTB = ₹50,000
  • Taxable Income = ₹10,00,000 − ₹50,000 (SD) − ₹2,50,000 = ₹7,00,000
  • Tax: ₹0 on first ₹3L + ₹10,000 on ₹3L–₹5L + ₹40,000 on ₹5L–₹7L = ₹50,000
  • Cess = ₹2,000. Total = ₹52,000 (Effective rate: 5.2%)

Senior citizens often benefit more from the Old Regime because they get a higher exemption limit and can claim Section 80TTB (interest income deduction up to ₹50,000).

Tax-Saving Tips and Strategies

1.

Maximise Section 80C early in the year. The ₹1,50,000 limit under 80C is the most widely used deduction. Invest in PPF, ELSS mutual funds, or pay life insurance premiums at the start of the financial year to benefit from compounding. ELSS funds have the shortest lock-in (3 years) among 80C instruments and can be planned using our SIP Calculator.

2.

Do not overlook Section 80D. Health insurance premiums qualify for deduction up to ₹25,000 (self and family) plus an additional ₹25,000 to ₹50,000 for parents (₹50,000 if parents are senior citizens). Preventive health check-ups up to ₹5,000 are also included within this limit.

3.

Claim NPS benefit under Section 80CCD(1B). An additional ₹50,000 deduction is available for contributions to the National Pension System, over and above the 80C limit. If your employer also contributes to NPS, that portion (up to 14% of basic salary for government employees, 10% for others) is deductible under 80CCD(2) without any cap. Plan your NPS strategy with our NPS Calculator.

4.

Optimise HRA if you live in rented accommodation. The HRA exemption can be substantial, especially in metro cities (Delhi, Mumbai, Chennai, Kolkata) where 50% of basic salary qualifies. Even if you own a home in one city and rent in another, you can claim both HRA exemption and home loan interest deduction under Section 24(b).

5.

Compare both regimes annually. Your optimal regime can change year to year based on salary restructuring, new investments, or life events like buying a house. Run the numbers through this calculator each April before informing your employer of your regime choice for TDS purposes.

6.

Use your gratuity and EPF wisely. Gratuity received on retirement or resignation (up to ₹25 lakh for private sector employees) is exempt from tax. EPF contributions qualify under 80C, and interest earned is tax-free up to certain limits. Plan your gratuity payout with our Gratuity Calculator.

What Changed in FY 2025-26 (Budget 2025)

The Union Budget 2025-26 introduced several taxpayer-friendly measures under the New Tax Regime. The most significant change was the increase in the Section 87A rebate threshold from ₹7,00,000 to ₹12,75,000 of taxable income, effectively making income up to ₹13,50,000 (for salaried individuals after the ₹75,000 standard deduction) completely tax-free. The tax slab structure was also revised with the nil-tax bracket extended to ₹4,00,000 (up from ₹3,00,000) and rates adjusted downward across all brackets.

Additionally, the TDS threshold on interest income for senior citizens was raised to ₹1,00,000, and the time limit for filing updated returns was extended from 2 years to 4 years from the end of the assessment year. These changes collectively aim to simplify compliance and put more money in the hands of middle-class taxpayers, with the government estimating that approximately 1 crore additional taxpayers will now pay zero tax under the New Regime.

Disclaimer: This calculator is for informational purposes only and does not constitute financial, tax, or legal advice. The results are estimates based on publicly available tax slab information for FY 2025-26 (AY 2026-27) and may not account for all individual circumstances, such as special allowances, capital gains, or business income. Tax laws are subject to change through Finance Acts and CBDT notifications. Always consult a qualified chartered accountant or tax advisor for decisions specific to your situation. WorldlyCalc is not responsible for any discrepancies or actions taken based on the output of this tool.

Frequently Asked Questions

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

The New Tax Regime (default from FY 2023-24) features seven income slabs with rates ranging from nil to 30%, but disallows most deductions including Section 80C (₹1.5 lakh for PPF, ELSS, etc.), Section 80D (health insurance), HRA exemption, and home loan interest under Section 24(b). The Old Tax Regime has four broader slabs with higher rates but permits all these deductions. For example, a person earning ₹15 lakh with ₹4 lakh in total deductions would typically pay less under the Old Regime, while someone with only ₹1.5 lakh in deductions would save more under the New Regime. The break-even point for most salaried individuals is approximately ₹3.75 lakh in total deductions.

How is income tax calculated in India for FY 2025-26?

Income tax is computed in a step-by-step process. First, aggregate your income from all five heads (salary, house property, capital gains, business/profession, and other sources). Then subtract the standard deduction (₹75,000 for salaried under New Regime, ₹50,000 under Old) and any eligible Chapter VI-A deductions (Old Regime only). The resulting taxable income is split across progressive slabs — for instance, under the New Regime: 0% up to ₹4L, 5% on ₹4L–8L, 10% on ₹8L–12L, 15% on ₹12L–16L, 20% on ₹16L–20L, 25% on ₹20L–24L, and 30% above ₹24L. After computing basic tax, apply the Section 87A rebate if eligible, add surcharge for income above ₹50 lakh, and finally add 4% Health and Education Cess.

What is the standard deduction for salaried employees under the new regime?

The standard deduction under the New Tax Regime for FY 2025-26 is ₹75,000 for salaried individuals and pensioners. This was increased from ₹50,000 in the Union Budget 2024. Unlike other deductions, the standard deduction requires no proof of investment or expenditure — it is automatically applied to your gross salary income. Combined with the enhanced Section 87A rebate threshold of ₹12,75,000 taxable income, this means a salaried person earning up to ₹13,50,000 gross salary (₹13,50,000 − ₹75,000 = ₹12,75,000 taxable) pays zero income tax under the New Regime. Under the Old Regime, the standard deduction remains at ₹50,000.

Who is eligible for the Section 87A rebate in FY 2025-26?

Section 87A rebate is available exclusively to resident individuals (not HUFs, firms, or NRIs). Under the New Tax Regime, if your total taxable income after the standard deduction does not exceed ₹12,75,000, you receive a rebate equal to the entire tax computed, resulting in zero tax liability. Under the Old Tax Regime, the rebate threshold is ₹5,00,000 of taxable income, with a maximum rebate capped at ₹12,500. For example, under the New Regime, a person with ₹13,50,000 gross salary has taxable income of ₹12,75,000 (after ₹75,000 standard deduction). The computed tax would be ₹67,500, but the full amount is rebated, making the final tax payable ₹0. However, if the taxable income is even ₹1 above ₹12,75,000, the entire rebate is lost.

Can I switch between old and new tax regime every year?

Yes, salaried individuals (those filing ITR-1 or ITR-2) can switch between the Old and New Tax Regimes every financial year without any restriction. You indicate your preference to your employer at the start of the year for TDS deduction purposes, and you can make the final choice when filing your income tax return. However, if you have business or professional income and file ITR-3 or ITR-4, different rules apply: once you opt out of the New Regime and choose the Old Regime, you can switch back to the New Regime only once in your lifetime. It is therefore highly recommended that self-employed individuals carefully evaluate both regimes before making a switch. Use this calculator to compare your tax under both regimes each year before deciding.

What is surcharge on income tax and when does it apply?

Surcharge is an additional tax levied on individuals with total income exceeding ₹50 lakh. It is calculated as a percentage of the basic tax amount (not income). The rates are: 10% for income between ₹50 lakh and ₹1 crore, 15% for ₹1–2 crore, 25% for ₹2–5 crore, and 37% above ₹5 crore under the Old Regime. Under the New Regime, the maximum surcharge rate is capped at 25%, regardless of income level. A marginal relief provision ensures that the total tax payable (including surcharge) does not exceed the tax that would be payable if income were at the threshold plus the additional income. For example, a person earning ₹51 lakh will not pay more surcharge than the additional income above ₹50 lakh. The 4% Health and Education Cess is then applied on the combined tax plus surcharge amount.

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