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Three terms that confuse most investors — cleared up simply.
The last lesson covered the headline tax rates. This one goes deeper into three things that confuse investors the most: what indexation actually was and why it mattered, how dividend (IDCW) payouts get taxed differently from what most people assume, and when TDS actually applies to your mutual fund income.
Indexation was a benefit that let you adjust your original purchase price upward for inflation before calculating capital gains tax — so you were taxed only on the "real" gain, not the portion that was just inflation. It used a government-published number called the Cost Inflation Index (CII), released every financial year.
How Indexation Worked
If you bought a debt fund for ₹1 lakh and, after adjusting for inflation using the CII ratio, the indexed cost came to ₹1.3 lakh, you'd only pay tax on the gain above ₹1.3 lakh — not on the full difference from your original ₹1 lakh. This meaningfully reduced tax on long-held debt investments.
| Investment | Indexation Status |
|---|---|
| Equity mutual funds | Never applied — equity LTCG is taxed on the raw gain with a ₹1.25 lakh exemption instead |
| Debt funds bought after April 1, 2023 | Removed — taxed at slab rate, no indexation regardless of holding period |
| Physical assets (property, gold) | Rules have also evolved separately — always check current provisions specific to that asset class |
Indexation rules for debt funds purchased before April 1, 2023 involve specific transition provisions — check with a tax professional or your fund house for units bought before this date.
When a fund declares an IDCW payout, it doesn't create new money — it simply pays out a portion of the fund's own NAV back to you, and the NAV drops by roughly that same amount on the record date.
Illustration
A fund with an NAV of ₹50 declares a ₹2 per unit IDCW payout. After the payout, the NAV drops to roughly ₹48, and you receive ₹2 per unit in cash, taxed at your income slab rate. Your total wealth (₹48 NAV + ₹2 cash) is unchanged on that day — you haven't gained anything extra, you've just converted part of your existing investment into a taxable cash payout.
In the Growth option, gains stay invested and compound without triggering any tax event until you actually redeem your units. In IDCW, every payout is taxed as income in the year you receive it — even if you reinvest that payout right back into the same fund. For anyone investing toward a long-term goal, this makes Growth the more tax-efficient choice in almost every case; IDCW mainly suits investors who need regular cash flow from their investment, such as retirees.
| Investor Type | On Redemption Gains | On IDCW Payouts |
|---|---|---|
| Resident Indian | No TDS | 10% TDS if IDCW from one fund house exceeds ₹5,000/year |
| NRI | TDS applies on capital gains at rates specific to gain type | TDS applies at rates specific to NRI status, generally higher than resident rates |
Resident investors with total income below the taxable threshold can submit Form 15G (or 15H for senior citizens) to the fund house to avoid TDS deduction on IDCW payouts altogether, since they wouldn't owe tax on that income anyway.
1. Thinking IDCW payouts are "extra" money
The NAV drops by roughly the payout amount — you're not gaining anything additional, just receiving part of your own investment as taxable cash.
2. Forgetting to claim Form 15G/15H when eligible
Eligible investors who skip this end up with unnecessary TDS deducted, which they then have to claim back as a refund while filing returns.
3. Applying old indexation rules to new debt fund purchases
Indexation no longer applies to debt fund units bought after April 1, 2023 — using outdated calculators or advice here leads to incorrect tax estimates.
Key Takeaway
Indexation adjusted your purchase cost for inflation to reduce taxable gains, but it no longer applies to debt funds bought after April 1, 2023 or to equity funds at all. IDCW payouts are simply a portion of your own NAV paid back to you, taxed at your slab rate — Growth is more tax-efficient for long-term goals. TDS on redemption gains generally doesn't apply to resident investors, but 10% TDS kicks in on IDCW payouts above ₹5,000 a year, avoidable via Form 15G/15H if you're eligible.