Tax on SIP Investments
What is it?
Each SIP (Systematic Investment Plan) instalment is treated by tax rules as a separate, independent purchase of mutual fund units, with its own purchase date and cost. This means a single SIP that's run for several years, when redeemed, can produce a mix of short-term and long-term capital gains depending on how long each individual instalment's units have been held.
Why should you care?
Investors sometimes assume their entire SIP investment becomes "long-term" once the SIP itself has run for over a year, but that's incorrect — each monthly instalment has its own separate clock, so redeeming a multi-year SIP all at once could still generate some short-term gains from the most recent instalments even though the SIP as a whole started years earlier.
Real-life example
An investor who ran a SIP for 3 years and then redeems the entire holding at once will have their gains calculated separately for each of the 36 instalments. Instalments from the first 24 months (now over 12 months old, assuming an equity fund) qualify for LTCG treatment, while the more recent instalments (from the last 11-12 months) are still short-term and taxed as STCG — resulting in a mix of both gain types within a single redemption, on a single fund.
Common mistakes
- Assuming an entire SIP investment becomes long-term simply because the SIP itself has been running for over a year.
- Redeeming an entire multi-year SIP holding in one transaction without realising the most recent instalments will still be taxed as short-term gains.
- Not tracking individual instalment dates, making after-the-fact tax calculation more difficult — though your CAS records each instalment's date for this purpose.
SIP instalments and their individual tax treatment at redemption (illustrative, equity fund, 3-year SIP redeemed today)
| Instalment age at redemption | Tax treatment |
|---|---|
| Older than 12 months (most of a 3-year SIP) | LTCG on that instalment's gain |
| 12 months or less (most recent instalments) | STCG on that instalment's gain |
FAQ
Can I redeem only the 'long-term' portion of my SIP to save tax?
Depending on the platform and folio structure, partial redemptions may allow you to specify which units to redeem, and some platforms redeem on a First-In-First-Out (FIFO) basis by default, which would redeem your oldest (most likely long-term) units first — check with your platform or AMC for how partial redemptions are processed.
Does the SIP holding-period rule differ between equity and debt funds?
Yes — the same LTCG/STCG threshold differences described in LTCG vs STCG on Mutual Funds apply per-instalment for SIPs too, so a debt fund SIP's instalments follow the debt fund threshold, and an equity fund SIP's instalments follow the equity fund threshold.
How do I calculate the gain for each individual SIP instalment?
Each instalment's gain is its proportional redemption value at the current NAV minus that instalment's original purchase cost — your CAS or a platform like FundSageAI can help organise this, since manually tracking dozens of instalments is tedious.
Does STP (Systematic Transfer Plan) follow the same per-instalment logic?
Yes — an STP involves periodic transfers that are each treated as a separate redemption from the source fund and a separate purchase in the destination fund, so each STP instalment has its own tax-relevant dates on both sides of the transfer.
See this concept applied to your own portfolio
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