Most investors check exactly one number before buying or holding a mutual fund: last year's return. That's like judging a cricketer by one innings. Here's the fuller checklist — the one that actually tells you whether a fund deserves a place in your portfolio.
A fund's 1-year return depends heavily on which exact date you measure from. Rolling returns fix this — they calculate returns over every possible 3, 5, or 7-year window in the fund's history and show the average, best, and worst. A fund that's consistently in the top half of its category across rolling windows is far more trustworthy than one with one brilliant year sitting on an otherwise average record.
| Metric | What it tells you | Where to check |
|---|---|---|
| 3 & 5-yr rolling returns | Consistency across cycles, not luck in one year | Fund fact sheet, AMC/RIA tools, Value Research, Morningstar |
| Category average comparison | Is it beating similar funds, or just the market? | Fund fact sheet, category comparison tools |
| Benchmark comparison | Is the manager adding value over the index? | Factsheet — every fund must disclose this |
| Downside capture ratio | How much it falls when the market falls | Research platforms, some factsheets |
| Expense ratio | How much return is eaten by costs every year | Factsheet, AMC website |
| Portfolio turnover & concentration | Is the manager sticking to a stated style? | Monthly portfolio disclosure |
A small-cap fund and a large-cap fund will never move the same way. Comparing an aggressive fund's return to a conservative fund's return and calling one "better" is meaningless. Always compare within the same category, and against the fund's own stated benchmark index. If a fund has trailed its benchmark for 3+ years running, that's a real yellow flag — not a single bad year, a pattern.
Any fund can look good in a rising market — most do. The real test is what happens when markets fall 15-20%. A fund that falls less than its category average during corrections, and recovers in step with (or faster than) peers, is showing you real risk management, not just a good run of stock picks. This is often more telling than any single return number.
A 1% difference in expense ratio sounds trivial. Compounded over 20 years on a large corpus, it isn't — it can mean lakhs of difference in your final corpus. Check the Total Expense Ratio (TER) in the factsheet and compare it to the category average. Direct plans typically cost less than regular plans; know which one you're holding and why.
A fund can be objectively "good" and still be wrong for you. A high-risk small-cap fund performing brilliantly is still a poor fit for a goal that's 18 months away. Before judging fund quality, re-confirm: does this fund's risk level and time horizon still match the goal you bought it for?
No single metric tells you if a fund is good. Star ratings, one-year returns, and star-manager reputations are all incomplete on their own. Put rolling returns, category and benchmark comparison, downside behaviour, cost, and goal-fit together, and you get a picture that's far harder to fool. If you're unsure how your existing funds stack up on these points, that's exactly the kind of review worth doing once a year — see our related piece on FD vs mutual fund for how to think about where money belongs in the first place.