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LTCG tax on SIP returns: how much of your gain you keep

A ₹10,000 SIP held 20 years gains about ₹76 lakh; LTCG takes around ₹9.7 lakh. See the tax at every horizon, how SIP units are taxed, and tax harvesting.

6 min read

SIP calculators usually show one big number at the end. But when you sell, the Income Tax Department takes a share of the gain. Since the July 2024 Budget, that share is bigger than it used to be.

Here's how much of your SIP gain you keep, worked out with the same tax logic as our SIP calculator.

How SIP gains are taxed in India

  • Held a year or more (long-term): 12.5% on gains above ₹1.25 L in a financial year, plus 4% cess.
  • Held under a year (short-term): 20% on the whole gain, plus 4% cess.[1]

The twist for SIPs: every instalment is its own purchase. Your March 2026 instalment turns long-term in March 2027, not when your first one did. When you sell, units go out first-in, first-out. So if you sell everything, the last 12 instalments are short-term and pay 20%.

What you keep at each horizon

Figure 1 from the SIP calculator

₹10,000 a month at 12%, all sold at once: paid in, gain kept and tax

① Sell after 5 years₹8.11 L kept
  • Paid in₹6 L
  • Gain kept₹2.11 L
  • LTCG tax₹13,515
Sell after 10 years₹21.93 L kept
  • Paid in₹12 L
  • Gain kept₹9.93 L
  • LTCG tax₹1.3 L
Sell after 15 years₹46.4 L kept
  • Paid in₹18 L
  • Gain kept₹28.4 L
  • LTCG tax₹4.06 L
② Sell after 20 years₹90.2 L kept
  • Paid in₹24 L
  • Gain kept₹66.2 L
  • LTCG tax₹9.71 L
Sell after 25 years₹1.69 Cr kept
  • Paid in₹30 L
  • Gain kept₹1.39 Cr
  • LTCG tax₹20.61 L

How to read it

  1. 1After 5 years the tax is small, ₹13.5K, because most of the gain falls inside the ₹1.25 L exemption. The striped sliver at the end is the tax.
  2. 2After 20 years the tax is ₹9.71 L, about 12.8% of the gain. The exemption hardly matters once gains run into tens of lakhs.
Open this scenario in the SIP calculator
₹10,000 SIP at 12%, everything sold in one year
Held forPaid inGainTaxTax as % of gain
5 years₹6 L₹2.25 L₹13.5K6%
10 years₹12 L₹11.23 L₹1.3 L11.6%
15 years₹18 L₹32.46 L₹4.06 L12.5%
20 years₹24 L₹75.91 L₹9.71 L12.8%
25 years₹30 L₹1.6 Cr₹20.61 L12.9%

The tax share climbs from 6% to nearly 13%. It never quite reaches it, thanks to the exemption, but on a big corpus the exemption is a rounding error.

Try it with your numbersSIP Calculator

The headline already shows what you'd keep after tax. Change the years to see the tax at any horizon.

Three ways to keep more of it (legally)

1. Don't sell it all in one year

The ₹1.25 L exemption is per financial year. Selling over several years, for example as monthly withdrawals in retirement, uses the exemption every year instead of once. The SWP calculator counts the tax on each year's withdrawals this way.

2. Harvest gains every year

If your fund has ₹1.25 L of long-term gain in a year, sell those units and buy back straight away. The gain is tax-free, and your purchase price resets higher. That can save up to ₹16,250 a year. Watch for exit loads, and remember the new units start a fresh one-year clock.

3. Don't sell in the first year

Short-term gains pay 20% instead of 12.5%. Plan big redemptions so the units you sell are over a year old.

What this doesn't mean

  • Tax isn't a reason to skip equity. Even after tax, the 20-year SIP above turns ₹24 L into ₹90.2 L.
  • Debt funds are different. Debt fund gains on units bought since April 2023 are taxed at your slab rate, whatever the holding period.
  • Rules change with Budgets. These rates apply to equity fund units sold from 23 July 2024.[2]

Assumes a fixed 12% return, monthly instalments, and all units sold together at the end; 4% cess included. Equity-oriented funds only. For illustration only, not tax or investment advice.

Sources

Common questions

How is LTCG on equity mutual funds taxed now?
Gains on units held a year or more pay 12.5% plus 4% cess on the part above ₹1.25 L a year. Units held under a year pay 20% STCG. These rates apply to sales from 23 July 2024.
Is each SIP instalment treated separately for tax?
Yes. Every instalment buys its own units with its own date, and units are sold first-in, first-out. So when you sell, the older units may be long-term while the last year's are short-term.
How much tax on a ₹10K SIP after 20 years?
At 12% a year it grows to about ₹99.91 L. Selling all of it in one year leaves about ₹9.71 L of tax, around 12.8% of the gain.
What is tax harvesting in mutual funds?
Selling units with up to ₹1.25 L of long-term gain each year, and reinvesting, so those gains are never taxed. It saves up to ₹16.3K a year; exit loads and the new one-year holding clock apply.

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