Portfolio Turnover Ratio

How it works

The portfolio turnover ratio is the lesser of total purchases or total sales during a year, divided by the fund's average net assets. A turnover of 100% roughly means the fund replaced its entire portfolio once over the year; a turnover of 20% suggests a patient buy-and-hold approach where positions are held around five years on average.

Every trade a fund makes incurs brokerage, securities transaction tax, and bid-ask spread costs that aren't captured in the published expense ratio but still drag on your net returns. Higher turnover therefore usually means higher of these invisible frictional costs.

In India

Indian fund factsheets disclose the portfolio turnover ratio. Index funds and large-cap funds typically show low turnover; aggressive, momentum-driven, or thematic funds show much higher figures. Debt funds can show very high turnover because bonds mature constantly and are rolled over, so the ratio means much less in that context.

The metric is most informative for equity funds, where it hints strongly at the manager's underlying style — a patient long-term investor versus an active trader chasing short-term moves.

Why it matters

High turnover isn't automatically bad if it produces strong post-cost returns, but it raises the bar: the manager's trades must earn back the extra friction they create just to break even with a calmer approach. Persistently high turnover paired with mediocre returns is a clear red flag that activity is destroying value rather than adding it.

Common mistakes

Don't judge turnover in isolation — always pair it with the fund's actual returns and its expense ratio. Don't compare equity turnover to debt turnover; they aren't remotely comparable because of how bonds roll. And remember the ratio is backward-looking; it describes what the manager did over the past year, not necessarily what they intend to do next year.