Income Tax Calculator Online in India – FY 2026–27

Use RegisterKaro's free Income Tax Calculator to calculate income tax online under both old and new tax regimes. Get an instant and accurate tax estimate for FY 2026–27 (AY 2027–28) in just a few clicks.

Income Tax Slab Rates

New Regime Slab Rates

Income Tax Slabs (Rs.)Income Tax Rates
Up to 4 lakhNil
4 lakh to 8 lakh5%
8 lakh to 12 lakh10%
12 lakh to 16 lakh15%
16 lakh to 20 lakh20%
20 lakh to 24 lakh25%
Above 24 lakh30%

Old Regime Slab Rates

Income Tax Slabs (Rs.)Income Tax Rates
Up to 2.5 lakhNil
2.5 lakh - 5 lakh5%
5 lakh - 10 lakh20%
Above 10 lakh30%

* Slab rates vary for resident senior and super senior citizens.

Calculating your income tax can feel confusing with changing tax slabs, deductions, exemptions, and multiple income sources. RegisterKaro’s free Income Tax Calculator helps salaried individuals, self-employed professionals, and taxpayers calculate income tax online under both old and new tax regimes instantly for FY 2026–27 (AY 2027–28).

What is the Income Tax Calculator?

An income tax calculator is an easy online tool that helps you find out the exact amount of tax you need to pay based on the new income tax act rules. It takes your income details and calculates your total tax liability in a clear, understandable way.

An income tax calculator for AY 2027-28 allows you to estimate your tax for the financial year 2026-27 using updated tax rules. It also helps you compare different tax outcomes and select the option that benefits you the most. The tool is especially useful for people who find tax laws and government filing systems difficult to understand. It reflects the latest budget updates and supports better tax planning for future financial years.

Revised Income Tax Slabs Under New Regime for FY 2026–2027 (AY 2027–2028)

The government has notified income tax slab rates for FY 2026–27 under both the old and new tax regimes. These slabs help taxpayers estimate their tax liability more accurately.

When you use an income tax calculator in a new regime, the tool applies the latest slab rates automatically to calculate your tax. This simplifies the process and avoids manual errors.

A proper income tax calculation for old vs new comparison helps you decide which regime results in lower tax liability.

New Regime Income Tax Slabs (FY 2026–27)

The table below shows the applicable income tax slab rates under the new tax regime for individual taxpayers for FY 2026–27:

Income Tax Slabs (₹) Income Tax Rate
Up to ₹4,00,000 Nil
₹4,00,001 – ₹8,00,000 5%
₹8,00,001 – ₹12,00,000 10%
₹12,00,001 – ₹16,00,000 15%
₹16,00,001 – ₹20,00,000 20%
₹20,00,001 – ₹24,00,000 25%
Above ₹24,00,000 30%

Note: Under the new regime, you do not pay any income tax on income up to ₹12 lakh because the applicable rebate applies. However, the rebate does not cover income taxed at special rates.

Old Regime Income Tax Slabs (Individuals Below 60 Years)

The table below shows the income tax slab rates applicable to resident individuals below 60 years of age under the old tax regime for FY 2026–27:

Income Tax Slabs (₹) Income Tax Rate
Up to ₹2,50,000 Nil
₹2,50,001 – ₹5,00,000 5%
₹5,00,001 – ₹10,00,000 20%
Above ₹10,00,000 30%

Old Regime Income Tax Slabs (Resident Individuals Aged 60–80 Years)

The table below shows the income tax slab rates applicable to resident individuals aged between 60 and 80 years under the old tax regime for FY 2026–27:

Income Tax Slabs (₹) Income Tax Rate
Up to ₹3,00,000 Nil
₹3,00,001 – ₹5,00,000 5%
₹5,00,001 – ₹10,00,000 20%
Above ₹10,00,000 30%

Old Regime Income Tax Slabs (Resident Individuals Above 80 Years)

The table below shows the income tax slab rates applicable to resident individuals above 80 years of age under the old tax regime for FY 2026–27:

Income Tax Slabs (₹) Income Tax Rate
Up to ₹5,00,000 Nil
₹5,00,001 – ₹10,00,000 20%
Above ₹10,00,000 30%

Surcharge and Health & Education Cess

If your total income exceeds certain limits, a surcharge applies in addition to income tax:

  • 10% of income tax if the total income is above ₹50 lakh and up to ₹1 crore
  • 15% of income tax if the total income is above ₹1 crore and up to ₹2 crore
  • 25% of income tax if the total income is above ₹2 crore and up to ₹5 crore
  • 37% of income tax if the total income exceeds ₹5 crore

Note: Under the new regime, the highest surcharge rate has been reduced to 25%.

In addition, Health and Education Cess at 4% is charged on the total tax payable.

Rebate under Section 87A

The table below shows the income limits up to which taxpayers can claim a rebate under Section 87A for FY 2026–27 under both tax regimes:

Regime Income Limit (₹)
Old Regime ₹5,00,000
New Regime ₹12,00,000

Note: From FY 2026–27, the rebate does not apply to income taxed at special rates. Rebate is also not applicable to long-term capital gains under Section 112A.

How to Use RegisterKaro’s Free Income Tax Calculator?

Using RegisterKaro’s Income Tax Calculator is simple and takes only a few minutes. Follow these steps to calculate income tax online and compare the old and new tax regimes:

Step 1: Select the financial year for which you want to calculate your tax.

Step 2: Choose your age group, as tax liability under the old regime depends on age.

Step 3: Click on Continue to proceed.

Step 4: Enter your salary before deductions such as HRA or LTA. If any exempt allowances apply, enter them in the relevant fields.

Step 5: Add other income details such as interest income, rental income, and home loan interest for rented or self-occupied property.

Step 6: If applicable, enter income from digital assets after reducing the cost of acquisition from the sale value.

Step 7: Click on Continue again.

Step 8: Enter eligible tax-saving investments and deductions under sections such as 80C, 80D, 80G, 80E, and 80TTA.

Step 9: Click on Calculate to view your tax liability and compare the results under both tax regimes.

Our online income tax calculator gives instant and accurate results, helping you plan your taxes efficiently for the selected financial year.

Income Tax Calculation Formula for FY 2026-27

You can calculate your income tax using a standard formula applied by most online income tax calculators.

Income Tax = (Taxable Income × Applicable Slab Rate) – Rebate (if any) + Surcharge (if applicable) + Health & Education Cess (4%)

Explanation:

  • Taxable Income: Subtract eligible exemptions and deductions under your chosen tax regime from the gross total income.
  • Basic Tax: Apply the applicable income tax slab rates to the taxable income.
  • Rebate (if applicable): Reduce tax under Section 87A for eligible taxpayers.
  • Add Surcharge: Apply a surcharge if your total income exceeds the specified limits.
  • Add Cess: Include 4% Health and Education Cess on the calculated tax.

By applying this formula correctly, you can estimate your total income tax liability with accuracy. RegisterKaro’s Income Tax Calculator automates this entire process, ensuring precise calculations based on the latest tax rules and slab rates.

Income Tax Calculation Old vs New Regime

When you calculate tax for FY 2025–26, you have two choices: the old tax or the new tax regime. To decide which one results in lower tax, you can perform an income tax calculation for the old vs the new. RegisterKaro’s free income tax calculator applies both methods instantly and shows you the difference.

Under the old regime, you can claim exemptions and deductions such as HRA, Section 80C, 80D, and more. Tax is calculated after reducing these eligible deductions from your total income.

Under the new regime, most exemptions and deductions are removed. Instead, you get lower slab rates. The new regime may be beneficial if you have fewer deductions.

A tax calculator computes tax under both regimes by:

  • Applying the respective slab rates,
  • Adjusting deductions under the old regime,
  • and showing the final tax liability for each.

By comparing the results, you can easily choose the regime with the lower tax burden before filing your return.

Calculation of Income Tax on Salary

Income from salary includes basic pay, HRA, special allowance, transport allowance, and other taxable allowances. You must first calculate your total salary income, subtract eligible exemptions and deductions, and then apply the applicable tax slabs. A salary income tax calculator automates this process and shows accurate results instantly.

You can also use RegisterKaro’s online income tax calculator to include income from other sources along with salary.

Let’s understand the calculation step by step with an example of Amit, who earns:

  • Basic Salary: ₹90,000 per month
  • HRA: ₹40,000 per month
  • Special Allowance: ₹18,000 per month
  • LTA: ₹24,000 annually
  • Rent Paid: ₹30,000 per month (Mumbai)
  • Savings account interest: ₹6,000
  • Fixed deposit interest: ₹14,000

Step 1: Calculate Gross Salary Income

Income from Salary = Basic Salary + HRA + Special Allowance + Transport Allowance + Other Allowances

Nature Amount (₹) Exemption/Deduction Taxable Income (Old Regime) Taxable Income (New Regime)
Basic Salary 10,80,000 10,80,000 10,80,000
HRA 4,80,000 2,40,000 2,40,000 4,80,000
Special Allowance 2,16,000 2,16,000 2,16,000
LTA 24,000 14,000 10,000 24,000
Standard Deduction 50,000 50,000 75,000
Gross Income from Salary 15,96,000 18,75,000

Step 2: Add Income from Other Sources

Amit also earns ₹6,000 from savings account interest and ₹14,000 from fixed deposits, making a total of ₹20,000.

Step 3: Claim Deductions (Old Regime Only)

To reduce your taxable income under the old regime, you can claim eligible deductions on investments and expenses:

Section Maximum Limit Investment Made Amount Claimed (₹)
80C 1,50,000 PPF ₹40,000, ELSS ₹25,000, LIC ₹10,000, EPF ₹1,30,000 1,50,000
80D 25,000 Medical insurance ₹15,000 15,000
80TTA 10,000 Savings account interest ₹6,000 6,000
Total Deductions 1,71,000

Step 4: Calculate Gross Taxable Income

Once you’ve claimed deductions, you can determine the gross taxable income for both regimes:

Nature Old Regime (₹) New Regime (₹)
Income from Salary 15,96,000 18,75,000
Income from Other Sources 20,000 20,000
Gross Total Income 16,16,000 18,95,000
Total Deductions 1,71,000 Not applicable
Taxable Income 14,45,000 18,95,000
Total Tax Payable (including cess) 2,46,800 1,98,520

Under the old regime, Amit reduces taxable income through deductions but still pays higher tax (₹2,46,800) due to slab rates.

Under the new regime, Amit cannot claim most deductions, but lower slab rates result in a lower (₹1,98,520) tax liability.

Benefits of Using the Income Tax Calculator

Using an income tax calculator helps you estimate your tax liability quickly and accurately without manual calculations. RegisterKaro’s Income Tax Calculator is designed to simplify tax planning for individuals with different income sources.

Key benefits include:

  • Accurate tax estimation: It calculates tax based on the latest slab rates and rules for the selected financial year.
  • Easy comparison of regimes: You can compare tax liability under the old and new regimes in one place.
  • Time-saving: It gives instant results without complex formulas or paperwork.
  • Better tax planning: It helps you understand how deductions and exemptions affect your taxes.
  • User-friendly: You only need to enter basic income and deduction details to get results.
  • Error-free filing support: It reduces the chances of mistakes before filing your return.

By using RegisterKaro’s Free Income Tax Calculator, you can plan your taxes confidently and stay prepared for timely and accurate return filing.

Frequently Asked Questions

Yes, you can use the income tax calculator even if you earn from salary and interest income at the same time. The calculator allows you to enter your salary details along with income from savings accounts, fixed deposits, or other sources. It combines all income heads to compute your total taxable income and then applies the relevant slab rates. This helps you see a realistic tax figure instead of estimating only on salary.

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