Income Tax Calculator
India FY 2024-25 — New vs Old regime comparison with slabs, rebate & effective rate
functions New Regime Slabs (FY 2024-25)
Up to ₹3L: Nil | ₹3–7L: 5%
₹7–10L: 10% | ₹10–12L: 15%
₹12–15L: 20% | Above ₹15L: 30%
87A rebate: Zero tax if taxable ≤ ₹7L | +4% cess
Real-Life Guide to Using the Income Tax (Old/New)
Compare old vs new tax regime. Use the examples and checks below to turn the number into a practical decision.
When this calculator is useful
Salaried employees use this in April-May when submitting their investment declaration to HR, or in January-February when deciding whether to switch regimes before the financial year closes. Freelancers and small business owners also use it to decide which regime to pick before filing ITR-3 or ITR-4.
For most people, the best way to use the Income Tax (Old/New) is to try the real case first, then change one input at a time. That makes the trade-off visible. For example, with a loan calculator you can change tenure while keeping the same rate; with an investment calculator you can change return assumption while keeping the same monthly contribution; with a health, education or measurement calculator you can check how much one input changes the final category.
The result should answer a practical question: Can I afford this? How much should I save? Is this score enough? Is this measurement within range? What is the safer or cheaper option? If the output does not answer the decision clearly, adjust the inputs until the scenario matches your real situation.
Practical Advice
Use the Income Tax (Old/New) as a planning tool, not just a number generator. Write down the inputs you used, because the final answer is meaningful only when you remember the assumptions behind it.
If the decision affects money, health, tax, safety, academics or legal compliance, keep a second check ready. That second check may be a bank quote, payslip, official rule, prescription, site measurement, mark sheet or invoice.
Common Mistakes
- Entering CTC instead of taxable salary — many people forget to subtract employer PF contribution and non-taxable reimbursements before typing the number in
- Assuming the new regime still allows the ₹1.5 lakh 80C deduction — it does not, only a handful of exemptions like employer NPS contribution survive
- Comparing the two regimes using last year's slab figures instead of the ones applicable for the assessment year being filed
- Not adding back HRA exemption or LTA claims when testing the old regime, which understates how much the old regime actually saves
- Picking a regime once and never re-running the calculator after a mid-year bonus, increment, or a new home loan changes the taxable income materially
How to Interpret Results
Look at the tax payable under each regime side by side along with the deduction amount that tips the balance — if the gap is small, factor in the effort of maintaining investment proofs for the old regime before deciding.
A good interpretation looks at both the main result and the supporting values. If a page shows totals, ratios, categories, schedules or warnings, read those together instead of focusing only on the biggest number.
Income Tax (Old/New) FAQs
Useful answers for interpreting the output, avoiding mistakes and using the result responsibly.
What is an Income Tax Calculator?
Income tax in India is levied on your total taxable income — salary, interest, rental income, capital gains, and business income combined. From FY 2023-24, the New Tax Regime is the default, with lower slab rates but fewer deductions. The Old Regime allows deductions under 80C, HRA, home loan interest, etc.
Under the New Regime: 0% up to ₹3L, 5% for ₹3–7L, 10% for ₹7–10L, 15% for ₹10–12L, 20% for ₹12–15L, 30% above ₹15L. A rebate u/s 87A makes income up to ₹7L effectively tax-free under the new regime.
Frequently Asked Questions
New vs Old tax regime explained for Indian taxpayers