Most investors compare mutual funds the same way: open two fund pages, look at the 3-year or 5-year return, and pick whichever number is bigger. This is one of the most common ways investors end up disappointed a year later.

Here's what a proper comparison actually looks like.

Why "higher return" alone is a bad comparison

A fund that returned 18% over 3 years with wild swings along the way is a very different investment from a fund that returned 16% with a smooth, steady climb. The first fund might have dropped 30% at some point before recovering — something the headline return number never shows you.

Return numbers also hide when the return happened. A fund that had one exceptional year and two flat years looks identical, on paper, to a fund that grew steadily every year — but they behave very differently in a market downturn.

The 5 things to actually compare

1. Returns across multiple time frames

Don't look at just 3-year or 5-year return. Check 1-year, 3-year, 5-year, and since-inception. A fund that looks great over 5 years but poor over the last 1-2 years may be past its best phase (manager change, style drift, asset bloat).

2. Risk-adjusted return (Sharpe Ratio)

Two funds with similar returns can carry very different risk. Sharpe ratio tells you how much return you're getting per unit of risk taken. A fund with a lower return but a meaningfully higher Sharpe ratio may be the better holding for most investors.

3. Drawdown (maximum fall from peak)

This is the number most investors never check — and the one that determines whether you'll actually stay invested during a crash. A fund that fell 45% in a downturn requires a much bigger recovery just to break even than one that fell 25%.

4. Expense ratio

Over a 15-20 year holding period, a 1% difference in expense ratio compounds into a meaningfully different final corpus. This matters more in categories where funds are otherwise similar (large-cap, index funds).

5. Consistency of category rank

A fund that stays in the top quartile of its category most years is generally more reliable than one that swings between top and bottom quartile — even if their average returns look similar.

A worked example

Say you're deciding between two flexi-cap funds:

Fund A: 5-yr CAGR 16.2%, Sharpe 0.85, max drawdown -38%, expense ratio 1.8%
Fund B: 5-yr CAGR 15.4%, Sharpe 1.05, max drawdown -24%, expense ratio 1.1%

Fund A has the higher headline return. But Fund B took meaningfully less risk to get a similar result, cost less to hold, and would have been far less stressful to stay invested in during a market fall. For most long-term investors, Fund B is the stronger choice — a comparison based on returns alone would have missed this entirely.

How to compare funds without manually pulling this data

Getting Sharpe ratio, drawdown, and multi-period returns for two funds side by side usually means checking multiple sources and doing your own math. Valuezig's Compare Funds tool puts this side by side automatically — pick any two funds and see returns, risk metrics, and cost in one view, rather than piecing it together from different apps.

If you're trying to narrow down which funds to compare in the first place, the fund screener lets you filter by category, risk metrics, and performance before you even get to the comparison stage.

Bottom line

Comparing mutual funds by return alone answers "which grew more in the past" — not "which is the better investment for me." Risk, consistency, and cost are what actually determine whether a fund is a good fit for your portfolio.

Compare any two funds properly on Valuezig — free, with risk and cost metrics included.

How to Compare Two Mutual Funds Properly (Not Just by Returns)