I want to start by saying something that most articles about this topic get wrong.
The people I meet with large amounts of money sitting in a bank account are not careless. They are not lazy, and they are not stupid. They are almost always the opposite, they are careful. They worked hard for that money, they've watched other people lose theirs, and they decided the safest thing to do was leave it exactly where they could see it.
I understand that completely. And I still think it's one of the most expensive decisions South Africans quietly make.
Not because cash is bad. Cash is essential. But because there's a difference between money that's parked and money that's working, and most people have never been shown the maths that separates the two.
So let's do the maths.
What your money is actually earning
As of July 2026, the repo rate sits at 7% and prime at 10.5%. The Reserve Bank held rates at its meeting on 23 July, after hiking in May. Inflation came in at 5.0% for June.
A good money market or notice account might be paying you somewhere in the region of 7–8%. On the face of it, that looks like you're comfortably ahead of inflation. Roughly 3% of real growth, for zero risk. Why would anyone bother with anything else?
Because that's the number before the two things that quietly eat it.
The first bite: tax
Interest is taxed as income, at your marginal rate. Not at a favourable rate. Not deferred until you use it. Every single year, on money you may not have touched.
There is an exemption, the first R23,800 of local interest is tax-free each year if you're under 65, and R34,500 if you're 65 or older. That exemption is genuinely useful, and it matters more than most people realise.
Here's why. Take someone with R200,000 in a money market account earning 8%. That's R16,000 of interest, comfortably inside the exemption. No tax at all. Against 5% inflation, they're earning roughly 3% in real terms, with no risk and instant access.
That's not a mistake. That's a perfectly sensible place for that money to be.
Now take someone with R750,000 in the same account.
Just over one percent. On three-quarters of a million rand. In the account they chose because it felt safe.
And notice what happened between the two examples. Nothing changed about the product, the rate, or the risk. The only thing that changed was the size of the balance.
This is the part almost nobody explains: cash isn't the villain. Size is. A modest emergency fund in the bank is doing its job beautifully. A large balance sitting in the same place is a different conversation entirely, and it's usually the person who has been most disciplined about saving who ends up in it.
The second bite: standing still costs money
At 5% inflation, R750,000 needs to grow by R37,500 in a year just to stay where it is. Not to grow. Just to buy the same amount of life next year that it buys today.
That's the bit that catches people. We're trained to think of losing money as a number going down. But money can lose value without the balance ever moving. In fact, the balance going up slightly is exactly what makes it so hard to see.
Your bank statement will never show you this. It shows a number that only ever increases. What it can't show you is what that number can actually buy.
Why so much money stays there anyway
In my experience there are three reasons, and none of them are stupidity.
1. Fear. People have watched markets fall. They've heard someone's story about losing half their retirement fund. The bank feels like the only place nothing bad can happen, and in nominal terms, they're right.
2. Not knowing where to look. This one is enormous and badly under-discussed. A lot of people would happily invest properly. They simply don't know what the options are, who to ask, or how to start without feeling foolish. So the money stays put by default, not by decision.
3. Not trusting anyone to help. This is the uncomfortable one for my industry, and I'd rather name it than pretend it isn't there. Plenty of South Africans have decided they'd sooner do nothing than hand their money to someone whose incentives they don't understand.
I'd argue all three are the same problem wearing different clothes. Not a money problem. An information problem.
Meanwhile, something is shifting
If you want evidence that South Africans do want to invest, and that the barrier was never willingness, look at where the money is quietly moving.
EasyEquities reported 1.245 million active clients and R94.9 billion in client assets in its results to February 2026, with assets up more than 41% year on year. Satrix grew assets under management from around R240 billion at the end of 2024 to roughly R310 billion by January 2026, and took over 72% of all local ETF flows in 2024.
Those aren't institutions. Those are ordinary people, in enormous numbers, opening accounts on their phones and starting with whatever they have.
So the story that South Africans are too poor, too disinterested, or too financially illiterate to invest doesn't hold up. They're doing it. Often on their own, with no help at all.
The honest bit about "just invest in shares"
Here's where I need to be straight with you, because this is where a lot of financial content quietly cheats.
Over very long periods, equities have been the best-performing asset class. That's well documented: over the 125 years to 2024, global equities returned about 5.2% per year after inflation, against 1.7% for bonds and 0.5% for cash. That gap, compounded over decades, is the single biggest driver of long-term wealth there is.
But "equities always win" is not true, and anyone who tells you it is either hasn't checked or is hoping you won't.
South Africa has just lived through a genuine lost decade on the JSE. Allan Gray wrote about it plainly, investors could have earned a similar return from cash over that stretch, with far less stress. Ninety One published research titled "the JSE's decade of disappointment." This isn't a fringe view. It's the mainstream one, from the very managers who run the money.
So why am I telling you this in an article arguing that money shouldn't sit still?
Because the lost decade isn't a hole in the argument. It is the argument.
Over the ten years to June 2026, the JSE has compounded at roughly 11.6% a year. The people who earned that return are, almost without exception, the people who were sitting there through the disappointing part. They didn't time anything. They just didn't leave.
Anyone who promises you smooth returns is selling something. What the long-term data actually says is more useful and much less exciting: the returns are real, they are not evenly distributed, and the reward goes to the people who can sit through the flat bits.
So what do you actually do?
I'm not going to tell you to move your money, because I don't know your situation, and anyone who tells you what to do with your money without knowing your situation is guessing.
What I can give you are the three questions I'd ask in a first meeting. You can answer them yourself, at your kitchen table, for free.
1. When do I actually need this money?
Money you need within the next 12 months belongs in the bank. Full stop. That's not a compromise, that is exactly what cash is for, and it's doing its job. School fees in March, a car in November, three to six months of expenses in case something goes wrong: leave it alone.
2. What is it really earning, after tax and inflation?
Not the rate on the statement. Take the rate, subtract the tax you'll pay on the interest above your exemption, then subtract inflation. Whatever's left is the truth. For a lot of people, doing this sum once is the whole intervention.
3. What am I actually protecting against?
If the answer is "I might need it suddenly," cash is right. If the answer is "I don't want to lose it," it's worth sitting with the fact that slow, invisible erosion is also a way of losing it, just one that never triggers the alarm.
If money is going to sit somewhere for five, ten, twenty years, and it's sitting in a bank account, that's the money worth having a proper conversation about. Not because the bank is bad. Because that money has a job it isn't being asked to do.
The point
The most expensive financial decisions I see aren't the reckless ones. They're the ones that never get made, the money that stayed exactly where it was, for years, because moving it felt like a risk and leaving it felt like safety.
You don't need a lump sum, a market forecast, or a perfect starting point. You need to know what your money is genuinely earning, and you need to stop waiting for a better moment to find out.
If you'd like to work out what your cash is actually doing, no products, no pitch, just the sum, book a free 30-minute call. If it turns out your money is exactly where it should be, I'll tell you that, and you'll have lost half an hour and gained some peace of mind.
