Is your money market fund too expensive? Why high fees may (or may not) be worth it.


If you’re parking cash in a money market fund while waiting for recent market volatility to subside, you might be paying dearly for that safe spot.

Many money market funds still carry high expense ratios, which are management fees expressed in a percentage. The average money market fund fee is 0.38%, which is sharply higher than the 0.05% average fee on an index equity mutual fund, according to the Investment Company Institute (ICI). That means, on average, you’ll pay $38 annually for every $10,000 you have invested in a money market fund compared to $5 for the index equity mutual fund.

Investors should be aware of this, so they don’t fall into the trap of overpaying to hold cash.

A money market fund is a type of mutual fund that invests in short-term, high-quality debt securities such as T-bills and certificates of deposit. Money market funds aim for high liquidity and stability.

  • Look beyond your broker. “Brokerage firms often limit investors to selecting from a menu of money market funds managed by the brokerage firm,” said Michael Brenner of FBB Capital Partners. “If your broker offers you access to third-party money market funds, those may come with lower fees.”

  • Try an exchange-traded-fund (ETF). “Consider using a low-cost ETF which has underlying investments that are very similar to your money market fund,” Brenner said. “Those ETFs may carry much lower fees than a similar money market fund. Bond Index ETFs have fees that average around 0.10%.”

While looking for a cheaper money market fund isn’t a bad idea, some money managers say people should only be using money market funds short-term, anyway, unless they’re elderly and worried about loss.

“The big rip off is if you’re using them for anything more than short-term because you’re not growing your money,” said Ronnie Gilliken, president and chief executive of Capital Choice of the Carolinas. Money market fund rates aren’t typically enough to fulfill the “Rule of 72” over a short timeframe, he said.

The Rule of 72 is used to estimate how long it will take to double your money. Divide 72 by the interest rate (as a percentage) to get an approximate number of years it will take to double your money. The average yield for money market funds is currently around 4.14% based on data from the ICI Fact Book for 2025.

U.S. dollar banknote and decreasing stock graph are seen in this illustration taken April 25, 2025. REUTERS/Dado Ruvic/Illustration
U.S. dollar banknote and decreasing stock graph are seen in this illustration taken April 25, 2025. REUTERS/Dado Ruvic/Illustration

But while money market fees should be noted, investors should resist the urge to solely use fees to decide whether to invest in something or not, Gilliken said.



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