Fund Turnover Ratio Guide
The turnover ratio measures how frequently a fund buys and sells securities within a year. A 100% turnover ratio means the fund replaced its entire portfolio in the past year, generating trading costs and taxable capital gains distributions for shareholders.
The turnover ratio is calculated by dividing the lesser of a fund's purchases or sales of securities during the year by the fund's average net assets. Index funds like the Vanguard 500 Index Fund (VFIAX) typically have turnover ratios of 2-4%, reflecting only the infrequent changes to the S&P 500 index itself. Actively managed funds often have turnover ratios of 50-150%, with some sector funds or tactical strategies exceeding 300%. The Fidelity Select Technology Fund (FSPTX) has a turnover ratio around 30-50%, while more aggressive funds can far exceed this.
High turnover has three negative consequences. First, trading costs including bid-ask spreads and brokerage commissions reduce returns. Second, high turnover generates short-term capital gains, which are taxed at ordinary income rates (up to 37% plus 3.8% Net Investment Income Tax) rather than the lower long-term capital gains rates (0%, 15%, or 20%). Third, frequent trading can lead to poor timing and reduced after-tax returns. A 2019 Morningstar study found that high-turnover funds (above 100%) had after-tax returns averaging 1.5-2.0% lower than their pre-tax returns.
Turnover Ratio by Fund Type
Different fund categories have different typical turnover ratios. Large-cap blend index funds: 2-5%. Actively managed large-cap funds: 40-80%. Small-cap value funds: 30-60%. International funds: 20-50%. High-yield bond funds: 20-40%. Sector funds: 50-150%. Municipal bond funds: 10-30%. The Vanguard Total International Stock Index Fund (VTIAX) has a turnover ratio of about 4%, while an actively managed international fund like the Fidelity Diversified International Fund (FDIVX) has a turnover of roughly 40%.
When evaluating a fund, compare its turnover ratio to others in the same Morningstar category. A large-cap growth fund with 150% turnover is an outlier that warrants scrutiny. The prospectus does not always list turnover ratio directly, but it appears in the fund's annual report under "financial highlights." Many brokerage research pages also display turnover ratio alongside other metrics. For taxable accounts, favor funds with turnover ratios under 20-30% to minimize tax drag.
FAQs
Is low turnover always better?
Not always. In active management, some turnover is necessary to implement investment ideas. A value manager may sell positions that have reached their price targets. However, excessive turnover (above 100%) rarely adds value and creates additional tax and cost drag. The key is whether the turnover is generating commensurate returns.
How does turnover affect ETF tax efficiency?
ETFs use an in-kind creation/redemption mechanism that allows them to remove low-cost-basis securities from the portfolio without realizing gains. This means even ETFs with moderate turnover can be more tax-efficient than mutual funds with the same turnover. Most index ETFs have turnover ratios under 10%.
Can turnover ratio change significantly from year to year?
Yes. A fund's turnover ratio can spike in years when the manager makes significant portfolio changes or when the underlying index undergoes major rebalancing. The S&P 500 index rebalances quarterly, but constituent changes typically affect only 1-2% of holdings per year, keeping turnover low for tracking funds.