Do You Actually Need to Pay Income Tax? Here's How to Check

"Do I owe tax this year?" sounds like it should have a quick yes-or-no answer. In practice it depends on which regime you're under, what kinds of income you have, and deductions you may not have fully accounted for.

Start with the basic exemption

Under the new tax regime, the default for FY 2025-26, the basic exemption is ₹4 lakh, and the Section 87A rebate brings tax down to zero for taxable income up to ₹12 lakh (₹12.75 lakh for salaried individuals, after the ₹75,000 standard deduction), provided that income doesn't include specially-taxed items like certain capital gains. Under the old regime, the basic exemption is lower, but you can bring taxable income down further through 80C investments, HRA, and other deductions.

The practical result: two people with identical gross income can have completely different tax outcomes depending on which regime they're under and how they've structured deductions.

The rebate isn't the same as being exempt

This trips people up specifically. Section 87A's rebate reduces your tax liability to zero if your taxable income falls within its limit, but it doesn't mean that income was never taxable in the first place, and it doesn't remove your obligation to file if your gross income (before deductions) crosses the filing threshold. You can legitimately owe zero tax and still be required to file a return.

Income types that change the answer

Salary income is the most straightforward to estimate; TDS is usually already deducted with your regime in mind. But other income types shift the picture:

• Capital gains from equity or mutual funds are taxed at specific rates that don't always follow the regular slab structure, and short-term gains are treated differently from long-term ones.
• Interest income from savings accounts, fixed deposits, and bonds is added to your total income and taxed at your slab rate, though a limited deduction exists for savings account interest under the old regime (₹10,000 under Section 80TTA, ₹50,000 for senior citizens under 80TTB).
• Freelance or business income is taxed after allowable expenses are deducted, and depending on turnover, you may qualify for presumptive taxation, which simplifies the calculation considerably.

A worked example

Take someone with ₹9 lakh in salary and ₹40,000 in savings account interest, ₹9.4 lakh gross income. Under the new regime, after the ₹75,000 standard deduction, taxable income is roughly ₹8.65 lakh, comfortably inside the ₹12 lakh effective-zero-tax zone created by the 87A rebate. Under the old regime, the same person could claim the ₹10,000 80TTA deduction on savings interest plus any 80C or 80D investments, but starts from a lower basic exemption and steeper slabs. For this income level, the new regime is very likely the better outcome, but "very likely" isn't "certain," running both is still the only way to know for sure, especially if old-regime deductions are already in place.

A rough way to check

1. Add up gross income from every source for the financial year.
2. Under the old regime, subtract deductions you actually have proof for, not ones you're planning to make before the deadline.
3. Compare what's left against the applicable slab rates for your chosen regime.
4. If tax comes out to a small number, check whether Section 87A's rebate brings it to zero.
5. Separately, run the same income through the other regime to see if it produces a better result.

If any of this feels uncertain, especially with multiple income types or capital gains involved, a proper computation through a filing platform or a tax professional is worth the small cost. Getting it wrong doesn't just mean an inaccurate estimate, it can mean an incorrect return. Note that owing zero tax isn't the same as being exempt from filing altogether, see who actually needs to file an ITR for that separate question.

This article is educational and not personalised financial advice. Tax rates and thresholds referenced here reflect the position as of FY 2025-26 per the Income Tax Department; always confirm current limits there before filing.