Portfolio turnover ratio in mutual funds
Portfolio turnover ratio (PTR) is a measure of how actively a mutual fund trades its portfolio over a given year, expressed as a percentage of the fund’s average net assets. A portfolio turnover ratio of 100 per cent indicates the entire portfolio was replaced (bought and sold) once during the year; a ratio of 200 per cent means the average holding was replaced twice. Low turnover indicates a buy-and-hold philosophy; high turnover indicates frequent repositioning.
Portfolio turnover is a hidden cost driver: every trade incurs brokerage, securities transaction tax (STT), stamp duty, goods and services tax on brokerage, and market impact cost, none of which appear in the total expense ratio (TER) but all of which reduce net returns.
Formula
The standard Indian formula for annual portfolio turnover ratio:
\[ \text{PTR} = \frac{\min(\text{Purchases},, \text{Sales})}{\text{Average AUM}} \times 100 \]
Some AMCs and third-party data providers use the average of purchases and sales in the numerator:
\[ \text{PTR}_{\text{alt}} = \frac{(\text{Purchases} + \text{Sales}) / 2}{\text{Average AUM}} \times 100 \]
SEBI’s AMFI guidelines use the minimum of purchases and sales (the first formula), which is the more conservative (lower) of the two approaches. This convention is consistent with the US SEC’s methodology.
Example: A fund with average AUM of ₹5,000 crore, securities purchases of ₹6,000 crore, and securities sales of ₹5,800 crore over 12 months:
\[ \text{PTR} = \frac{\min(6000, 5800)}{5000} \times 100 = \frac{5800}{5000} \times 100 = 116% \]
Typical portfolio turnover ratios in India
| Fund type | Typical PTR |
|---|---|
| Passive index fund | 5–15% (quarterly rebalancing + dividends reinvested) |
| Large-cap equity (active) | 40–100% |
| Mid-cap equity (active) | 60–150% |
| Small-cap equity (active) | 60–150% |
| Flexi-cap | 50–120% |
| Aggressive hybrid | 40–100% |
| Balanced advantage (dynamic) | 100–300% (equity + debt repositioning) |
| Liquid fund | 300–1,000%+ (very short-maturity instruments turn over constantly) |
| Short duration debt | 100–200% |
Liquid and overnight fund turnover ratios are extremely high because the underlying instruments mature within days to weeks; the high ratio reflects the nature of the asset class rather than excessive trading.
Transaction costs embedded in turnover
For an equity fund trading on NSE/BSE, approximate one-way transaction costs per trade (2024–25):
| Cost component | Approximate rate (equity delivery) |
|---|---|
| Brokerage | 0.10–0.30% (negotiated institutional rates; effectively lower) |
| STT | 0.001% (on sell only) |
| Stamp duty | 0.005% (on buy only) |
| GST on brokerage | 18% of brokerage |
| Exchange transaction charges | 0.00297% (NSE equity) |
| SEBI turnover fees | 0.0001% |
| Market impact cost | 0.05–0.50% (depends on stock liquidity, order size) |
For a large-cap fund with institutional brokerage of 0.05 per cent one-way, a round-trip (buy + sell) costs approximately 0.15–0.20 per cent. A fund with a PTR of 100 per cent effectively pays these round-trip costs on the entire portfolio each year, roughly 0.15–0.20 per cent of AUM in transaction costs annually. This is additive to the TER.
For a small-cap fund with PTR of 150 per cent and higher market impact costs (0.30 per cent per trade in illiquid smallcaps), the hidden transaction cost could be 0.90–1.20 per cent of AUM per year, significantly eroding net returns even before the TER is accounted for.
PTR and fund manager style
| Fund style | Expected PTR | Rationale |
|---|---|---|
| Momentum / tactical | 150–300% | Frequent position changes based on short-term signals |
| Valuation-driven (deep value) | 20–60% | Patient accumulation, long holding periods |
| Growth at a reasonable price (GARP) | 50–100% | Moderate rebalancing as valuations shift |
| Index fund | 5–15% | Trade only when index composition changes |
Some well-regarded Indian fund managers are known for very low portfolio turnover (below 30 per cent), reflecting conviction-driven, long-term portfolios. This philosophy minimises the hidden transaction cost layer and aligns manager incentives with long-term investor outcomes.
PTR and tax efficiency
High portfolio turnover generates short-term capital gains (STCG) within the fund, units held for less than 12 months attract STCG. These gains are distributed to investors (via NAV, since gains are not separately distributed in growth plan funds). Higher turnover can therefore accelerate the realisation of taxable events, though in India the direct capital gains tax impact falls on the investor only at redemption (the fund itself is a pass-through vehicle from a tax standpoint under SEBI’s structure). For investors in dividend plans, frequent NAV-boosting from short-term trades could trigger dividend distribution and associated tax.
PTR disclosure in India
Under SEBI (Mutual Funds) Regulations, AMCs must disclose the portfolio turnover ratio:
- In the annual report of each scheme.
- In the scheme information document (SID) as a historical average.
- On the AMC website.
AMFI publishes portfolio turnover data and it is aggregated by third-party portals. Some AMCs include PTR in monthly factsheets though it is not mandated at that frequency.
PTR and the TER relationship
PTR costs are separate from TER. TER covers known operational expenses; PTR costs (brokerage, STT, impact cost) are charged directly to the scheme’s assets as transaction-level costs without flowing through the TER line. In comparing two funds with identical TERs, the fund with lower PTR will often generate better net returns, particularly in mid and small-cap categories where impact cost is high.
See also
- Total expense ratio in mutual funds
- Tracking error in index funds
- STT on equity mutual fund redemption
- Stamp duty on mutual fund units
- Alpha (Jensen’s alpha) in mutual funds
- Mutual fund
- SEBI
References
- SEBI (Mutual Funds) Regulations, 1996, disclosure requirements for portfolio turnover.
- AMFI, Portfolio turnover ratio computation guidelines.
- NSE India, Charges and levies on equity trading, nseindia.com.
- SEBI circular on standardised disclosure of scheme-level statistics, 2013.
- Value Research, Portfolio turnover data for Indian mutual funds, valueresearchonline.com.