For many people, keeping money in the bank feels like the safest option. You can see it. You can access it. The value does not fluctuate like the markets. There is comfort in knowing exactly what sits in your account.
But over time, cash can become one of the most destructive places to keep long-term wealth.
The Silent Erosion
The real danger is not volatility. It is erosion.
Every year, the cost of living in South Africa rises. Groceries, fuel, school fees, medical aid, insurance and travel all become more expensive. If your money is not growing faster than those increases, you are quietly losing ground — even if your bank balance appears healthy.
Cash earns interest, but that interest is taxed as income. After tax, and after inflation, the real return is often minimal or negative.
A million rand today does not buy what it did ten years ago. It will buy even less ten years from now. Nothing disappears on paper. Your capital is still there. It simply does less for you each year.
That is what makes cash so deceptive.
The Trap of Waiting
Many investors sit on large cash balances while waiting for the “right” moment to invest.
They wait for markets to calm down.
They wait for interest rates to change.
They wait until the outlook feels clearer.
But clarity rarely comes before opportunity. Long-term wealth is built through time in the market, not timing the market.
The right moment to start investing is usually sooner than it feels comfortable.
What 25 Years Can Do
To illustrate the impact of staying invested, our investment desk modelled how R1 million would have grown over the past 25 years across different portfolio strategies.
Here is what that initial investment would be worth today:
- Cash: R6.7 million
- Conservative Portfolio: R13.3 million
- Balanced Portfolio: R19.4 million
- Diversified Growth Portfolio: R22.3 million
Cash grew 6.7 times over 25 years. A diversified growth portfolio grew more than 22 times.
The difference is not incremental. It is transformational.
This is Not About Taking Excessive Risk
This is not about speculation or unnecessary risk. It is about allowing capital to work across well-diversified assets over time.
Cash absolutely has a role — for short-term needs, liquidity and emergency reserves. But when long-term capital remains in cash indefinitely, it quietly undermines the financial security it is meant to protect.
Over time, the greatest cost of cash is not volatility. It is missed opportunity.
As the saying goes: The sheep fears the wolf, only to be eaten by the shepherd.