Income Tax Calculator
Compare income tax under new and old regimes for FY 2025-26.
Input & results
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Results
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Calculation History
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For informational purposes only. Consult a CA for official tax filing. Tax data version: FY 2025-26. See our full disclaimer.
What is Income Tax?
An Income Tax Calculator estimates the tax you owe on your annual income based on the applicable slab rates. In India it helps salaried individuals and professionals compare the old and new tax regimes and plan their finances.
Indian income tax is progressive: income is divided into slabs, each taxed at a higher rate. The old regime allows deductions (such as 80C, HRA, and standard deduction) with higher rates, while the new regime offers lower rates with fewer deductions. This calculator applies the relevant slab rates to your taxable income to estimate your liability, helping you decide which regime is more beneficial.
Why is it used?
Tax is one of the largest annual outflows for earners. Estimating it helps you choose the better regime, plan tax-saving investments, structure your salary efficiently, and avoid surprises at filing time.
Who should use it?
Salaried employees, freelancers, and professionals in India who want to estimate their tax liability and compare the old and new regimes.
How it works
- Enter Annual Gross Income, Deductions (80C, etc.) in the input fields.
- The calculator validates your entries and applies the correct income tax formula.
- Results update in real time as you change any value — no submit button needed.
- Review the formula, variable definitions, and worked example below to see how the answer is derived.
Formula
Variable definitions
| Variable | Meaning |
|---|---|
| Slab Income | Portion of taxable income falling in a given slab |
| Rate | Tax rate applicable to that slab |
| Tax | Total tax before cess and rebates |
How the formula works
- Compute taxable income after applicable deductions and exemptions.
- Split the income across the slab thresholds for the chosen regime.
- Apply each slab's rate to the income within that slab and sum the results.
- Add applicable cess (currently 4%) and subtract any rebate to get the final tax.
Example calculation
Tax on ₹12,00,000 taxable income under the new regime (illustrative slabs).
| Input | Value |
|---|---|
| Taxable income | ₹12,00,000 |
| Regime | New |
| Cess | 4% |
- Apply 0% up to ₹3L, 5% on ₹3–6L, 10% on ₹6–9L, 15% on ₹9–12L
- Tax = 0 + 15,000 + 30,000 + 45,000 = ₹90,000
- Cess = 4% × 90,000 = ₹3,600
- Total ≈ ₹93,600
Result
More examples
₹12,00,000 under the old regime with ₹1.5L 80C deduction (illustrative).
| Input | Value |
|---|---|
| Gross income | ₹12,00,000 |
| 80C | ₹1,50,000 |
| Regime | Old |
- Taxable = ₹10,50,000
- Apply old slabs + cess
Result
Methodology
- Gather Annual Gross Income, Deductions (80C, etc.) from your documents or estimates.
- Enter each value in the matching field; units must match the labels.
- The calculator applies the Income Tax formula and updates results in real time.
- Compare scenarios by changing one input at a time.
Benefits
- Compare old vs new regime liability instantly.
- Plan tax-saving investments before year-end.
- Estimate take-home after tax.
- Avoid surprises when filing returns.
Use cases
- Choosing between the old and new tax regimes.
- Planning 80C and other deductions.
- Estimating advance tax for freelancers.
- Structuring salary components efficiently.
Tips & important notes
- The better regime depends on how many deductions you can claim.
- Include the standard deduction where applicable.
- Don't forget the 4% health and education cess.
- Tax laws change yearly — verify current slabs before filing.
Common mistakes
- Comparing regimes without applying eligible deductions to the old regime.
- Forgetting cess and any surcharge on higher incomes.
- Using outdated slab rates from a previous financial year.
Related concepts
- HRA exemption and Section 80C deductions
- Marginal vs effective tax rate
- TDS and advance tax
Good to know