In short
A money market fund pools your money into very short-term instruments — built for stability and quick access, paying roughly short-term rates less an annual fee. Private lending places capital into a lending arrangement for a term, usually secured, and typically pays meaningfully more. The money market is a parking place for cash; private lending puts capital to work. Most people need both, for different money.
Money market
Cash, quick access
Private lending
Committed, higher return
Fees
Annual fund fee vs none
Best pairing
Buffer + working capital
01 — The short version
The short version
Choose a money market fund when the priority is keeping money stable and reachable — an emergency buffer, cash between decisions, or funds you'll need within months. Choose private lending when you have capital you can genuinely set aside for a term and want it earning more than a cash rate.
They're not really competitors. A money market fund is designed to preserve and provide access; private lending is designed to earn. The mistake isn't picking the wrong one in the abstract — it's leaving capital parked in cash for years when it was never needed at short notice.
02 — How each works
How each one works
A money market fund is a collective investment that pools money from many investors into short-dated, high-quality instruments — bank deposits, short-term government and corporate paper. Because everything it holds matures quickly, the fund's value stays very stable and you can usually withdraw within a day or two. The return tracks prevailing short-term interest rates, and the manager charges an annual fee.
Private lending works differently: you provide capital into a lending arrangement and earn the return as it's repaid. Local arrangements are usually prime-linked and typically secured against assets. The capital is committed for the term rather than withdrawable on a few days' notice — and that commitment is precisely what earns the higher return.
03 — Side by side
Private lending vs money market, side by side
| Money market fund | Private lending | |
|---|---|---|
| Purpose | Hold cash safely | Put capital to work |
| Return | Short-term rates, less fees | Prime-linked (local) |
| Access | Usually a day or two | Committed for the term |
| Stability | Very stable | Steady; not guaranteed |
| Ongoing fees | Annual management fee | None to you |
| Best for | Buffers & near-term cash | Medium-term capital |
Read that table as a trade rather than a scoreboard: the money market wins on access and stability, private lending on return — because it asks for time in exchange.
04 — Returns & fees
Returns and fees compared
Money market returns follow short-term interest rates. When rates are high they look attractive; when rates fall they drop with them. Two things quietly erode the headline: the annual management fee, deducted whether the fund performs or not, and inflation — after both, a money market fund often does little more than preserve buying power. That's not a criticism; preservation is what it's built for.
Private lending steps up the ladder. Local arrangements are commonly quoted around prime + 1% to prime + 5% — with prime at 10.5% (August 2026), roughly 11.5% to 15.5% a year — with no ongoing fund fee taken off the top. On the same capital over the same year, that gap is substantial. What you're paid for is committing the money for the term and accepting that it isn't guaranteed.
There's a subtlety worth knowing about rate cycles. Both are affected when the Reserve Bank moves rates, but not identically: a money market fund's yield follows short-term rates, which tend to fall quickly when the Reserve Bank starts cutting, while a prime-linked private-lending return moves with prime and starts from a materially higher base. In a falling-rate cycle, cash yields can compress noticeably — which is often when people who parked money "for now" discover that "for now" quietly became three years at a shrinking rate.
05 — Risk & access
Risk and access compared
Money market funds are among the most stable places to hold money. They're not formally guaranteed — they're funds, not deposits — but they hold short-dated, high-quality instruments specifically to minimise volatility, and access is usually a day or two. For an emergency buffer, that combination is hard to beat.
Private lending asks for the opposite trade. Capital is committed for the term, and while secured, well-run arrangements are relatively low-risk, the capital isn't guaranteed — it depends on the underlying lending being repaid. So the honest framing is: a money market fund protects and provides access; private lending pays more for patience and for accepting credit risk.
Cash you might need belongs where it can be reached. Capital you won't touch for years shouldn't be sitting there earning a cash rate.
06 — Which suits you
Which suits you — and using both
The practical answer for most people isn't one or the other. Keep an emergency buffer and near-term cash in a money market fund, where stability and access are the whole point. Then consider private lending for capital with a genuine medium-term horizon — money earmarked for later, a lump sum with no immediate call on it, or savings that have simply been sitting in cash by default.
That default is the thing worth examining. Plenty of South Africans hold far more in money market funds than their buffer actually requires, often for years, because it feels safe and never demands a decision. It is safe — but capital sitting at a cash rate for a decade has a real cost too. Deciding how much genuinely needs to stay liquid, and how much could be working harder, is usually the more useful question than which product is better.
A simple way to work it through: decide how many months of expenses you want reachable, add anything already earmarked for the next year or two — school fees, a planned purchase, tax — and keep that in the money market fund. What's left is, by definition, capital without a near-term call on it. That's the portion worth asking a harder question about, because it's the portion where the choice between a cash rate and a lending return actually compounds into a meaningful difference.