What Is a Money Market Fund?

A money market fund is a type of unit trust that holds short-term, lower-risk instruments: treasury bills, other short government paper, and bank deposits. It earns interest every day, aims to protect your capital...

What Is a Money Market Fund?

A money market fund is a type of unit trust that holds short-term, lower-risk instruments: treasury bills, other short government paper, and bank deposits. It earns interest every day, aims to protect your capital rather than grow it dramatically, and lets you withdraw within a few working days. In Uganda, most family money held in unit trusts sits in this type of fund.

The context

The mechanics are simple once stated plainly. The fund earns interest daily on its holdings. Each day the manager deducts the management fee, then credits the remainder to unitholders, usually by increasing your unit balance or the unit price. As Unit Trusts for Family Money explains, Ugandan money market funds were paying roughly 11 to 12 percent annualized as of mid-2025, with rates moving up and down alongside government borrowing costs. Minimums are genuinely low, commonly UGX 100,000 to start with small top-ups, and withdrawals typically pay out within two to five working days.

That combination, real return plus access measured in days, is why the money market fund is the natural home for two layers of a family plan: the emergency floor, meaning the three to six months of household costs that must never be locked or gambled, and medium-term pots such as school fees due in one to three years. Money you will not touch for a decade belongs elsewhere; over long horizons a money market fund quietly loses to growth assets.

The common misunderstanding

The published "annualized yield" is read as a promise. It is not. It is yesterday's net earning multiplied out to a full year, a weather report rather than a contract, and it follows treasury rates down with a lag when government borrowing costs fall. The related trap is yield-chasing: moving UGX 5 million between managers for a half-percent difference earns a family about UGX 25,000 a year and costs paperwork, days out of the market, and another set of statements to track. Pick one licensed manager, review annually, and let the standing order do the work.

One boundary also matters. A money market fund is a savings tool, so it comes after protection, never instead of it. The sequence in Insurance in the Right Order puts health cover and term life ahead of every savings product, because a fund balance cannot answer a catastrophe the way insurance does.

One action

Move your emergency floor this month. Choose one CMA-licensed manager, confirm in writing that the account you are opening is the money market fund and never its equity cousin, and set a mobile money standing instruction that feeds it monthly. The floor earns its keep only when it sits outside the everyday account where it would leak.

Keep reading

  • What Is an Emergency Fund and How Big Should It Be?
  • What Is a Dividend?
  • What Is Inflation and Why Does It Matter for Families?
  • What Is a Memorial Fund?

Keep reading

  • What Is an Emergency Fund and How Big Should It Be?
  • What Is a Dividend?
  • What Is Inflation and Why Does It Matter for Families?
  • What Is a Memorial Fund?