Why You Pay Tax on Mutual Fund Gains Even If Your Income Is Below Rs 12 Lakh

You expected zero tax because your income is under Rs 12 lakh, and then the filing portal showed a demand on your mutual fund profits. Here is the short answer: the famous Rs 12 lakh rebate only clears tax on your regular slab income. Your gains from equity mutual funds are taxed at separate flat rates that sit completely outside that rebate.

So even with total income below Rs 12 lakh, the tax on your long-term and short-term capital gains still stands. This guide explains exactly why, with rupee examples, as of July 2026.

Key takeaways

• The Section 87A rebate makes slab income up to Rs 12 lakh tax-free, but it does not cover capital gains taxed at special rates.
• LTCG on equity funds is taxed at 12.5% on gains above Rs 1.25 lakh a year; STCG is taxed at 20%.
• These rates apply however low your total income is, once your slab income has used up the basic exemption.
• Debt fund gains on units bought on or after 1 April 2023 are taxed at your slab rate, so they can fall inside the rebate.
• Residents can set unused basic exemption against these gains, and that is the one case where low income still means zero tax.

So why did you get a tax demand?

The confusion comes from one word people skip: "slab." When the news said income up to Rs 12 lakh is tax-free, it meant income taxed at the normal slab rates, like salary, bank interest, rent, and business profit.

Capital gains on shares and equity mutual funds are not taxed at slab rates. They are taxed at their own fixed rates under special sections of the Income Tax Act. The rebate simply does not reach them.

Here is the catch: the two are calculated in separate buckets. Your salary can show zero tax while your mutual fund gains show a clear tax due, on the very same return.

What the Rs 12 lakh rebate actually covers

Under the new tax regime for FY 2025-26 (assessment year 2026-27), a resident individual gets a Section 87A rebate of up to Rs 60,000. That is what makes slab income up to Rs 12 lakh effectively tax-free, as set out by the Income Tax Department and announced by the Press Information Bureau.

But the same rules are clear that the rebate is not allowed against income taxed at special rates. That leaves out short-term capital gains under Section 111A and long-term capital gains under Section 112A. Lottery winnings and crypto gains are excluded too.

The Finance Act, 2025 made this exclusion explicit for FY 2025-26 onward, so there is no grey area left to argue about.

Does switching to the old regime help? Not really

Some readers assume the old regime is kinder here. It is not. The old regime 87A rebate is only up to Rs 12,500, and it kicks in only when income is up to Rs 5 lakh. It also excludes long-term gains under Section 112A.

So changing regimes does not rescue the tax on your equity fund gains. Both regimes treat those gains the same way, at the special rates. The regime choice matters for your salary and other slab income, not for the capital gains bucket.

How equity mutual fund gains are actually taxed

Two things decide your tax: how long you held the units, and whether the scheme is equity or debt. For an equity fund, the line is drawn at 12 months.

These rates apply to gains booked on or after 23 July 2024 and continue in FY 2025-26. There is no indexation benefit, and a 4% health and education cess is added on top of the tax. The special rate applies when Securities Transaction Tax is paid, which is the normal case for equity funds redeemed through the fund house or sold on an exchange.

A worked example: income below Rs 12 lakh, tax still due

Say Ananya is salaried. Her taxable salary, after the Rs 75,000 standard deduction, is Rs 8,25,000. During the year she also redeemed equity fund units held for 14 months and booked a long-term gain of Rs 2,00,000.

Her salary tax first:

• Slab tax on Rs 8,25,000 works out to about Rs 22,500.
• Because this slab income is under Rs 12 lakh, the 87A rebate cancels it. Salary tax: Rs 0.

Now her mutual fund tax:

• LTCG of Rs 2,00,000, minus the Rs 1.25 lakh cushion, leaves Rs 75,000 taxable.
• At 12.5% that is Rs 9,375, plus 4% cess, so about Rs 9,750.

Her total income for the year is Rs 10,25,000, comfortably below Rs 12 lakh. Yet she owes roughly Rs 9,750. The rebate never touched the gains, because they live in the other bucket.

Short-term gains sting more

Now change one thing. Suppose Ananya had sold the same units after only 8 months, making it a short-term gain of Rs 2,00,000.

There is no Rs 1.25 lakh cushion for short-term gains. The whole Rs 2,00,000 is taxed at 20%, which is Rs 40,000, plus 4% cess, so about Rs 41,600.

Same gain, same low income, but more than four times the tax. That is the price of selling early. It is also a plain reason to hold an equity fund past 12 months where you can, for the tax outcome and not only the returns.

Debt funds are taxed differently

If your gains came from a debt mutual fund, the equity rates above do not apply at all. For units bought on or after 1 April 2023, the entire gain is taxed at your slab rate, whatever the holding period, with no indexation.

Here is the twist that can help you: because debt fund gains are taxed at slab rates, they do sit inside the 87A rebate. So if your total slab income, including that debt gain, stays under Rs 12 lakh, the rebate can wipe out the tax on it.

That is the opposite of equity funds. With debt funds, low income can genuinely mean low or zero tax. With equity funds, it often does not. Do check your fund type before you assume anything, because many investors are not sure whether a hybrid scheme counts as equity or debt for tax.

When does income below Rs 12 lakh actually mean zero tax on gains?

There is one real escape route, and it is only for residents. If your other income is below the basic exemption limit, the unused part can be set against your capital gains.

For FY 2025-26, the new regime basic exemption is Rs 4 lakh. Say your only income for the year is a long-term equity gain of Rs 3,00,000. First remove the Rs 1.25 lakh LTCG cushion, which leaves Rs 1,75,000. Since you have no other income, that amount fits inside your Rs 4 lakh basic exemption, and your tax works out to Rs 0.

But the moment you add a salary that already uses up that Rs 4 lakh, there is no room left to absorb the gains. That is why a person with a normal salary and a small equity gain still pays, while a person with no other income may not. One more point: non-residents cannot use the basic exemption against these gains at all.

A quick self-check before you panic

Run through this in order, and the demand usually makes sense:

• Was the gain from an equity or debt fund? Debt gains follow your slab.
• Was the holding period over or under 12 months? That sets long-term versus short-term.
• Is your slab income already above the Rs 4 lakh basic exemption? If yes, there is no room to shelter the gains.
• Did you cross the Rs 1.25 lakh long-term cushion this year?

If your slab income is above the basic exemption and your equity gain crosses the cushion, tax is correct, not a portal error.

How this shows up in your ITR

Capital gains also change which form you file. You cannot use the simple ITR-1 once you have capital gains to report, so you move to ITR-2. If you are unsure which form fits, our guide on which ITR form a salaried person should file for AY 2026-27 walks through it.

There is also timing. Tax on capital gains can trigger advance tax, so a large gain in one quarter may need payment during the year, not only at filing. Booking a big gain near year-end without planning is one of the quiet reasons people meet an unexpected demand.

How to plan around the tax you cannot avoid

You cannot make the rebate cover equity gains. But you can shape the tax.

• Use the Rs 1.25 lakh yearly LTCG cushion. Booking some long-term gains each year, within that limit, keeps them tax-free.
• Hold equity funds past 12 months so gains are taxed at 12.5%, not the 20% short-term rate.
• Avoid churning. Frequent switching turns long-term gains into short-term ones, a habit covered in our note on SIP mistakes beginners make in India.

A calmer, lower-churn portfolio also tends to be cheaper to run. If you are still choosing where to invest, our comparison of index funds versus active mutual funds for beginners explains why turnover and cost matter alongside tax.

Bottom line

The Rs 12 lakh rebate is real, but it only clears tax on your slab income. Equity mutual fund gains are taxed on their own, at 12.5% long-term above the Rs 1.25 lakh cushion and 20% short-term, whatever your total income. The one exception is a resident whose other income sits below the Rs 4 lakh basic exemption. So check which bucket your gain falls in before you assume it is tax-free, and plan your redemptions around the holding period and the yearly cushion.

This article is educational and not tax advice. Tax rules, rates, and limits can change and depend on your full financial situation. Check the latest position on the Income Tax Department website or with a qualified tax professional for your own case.