Cornerstone — Edition 04
The Decade Most People Waste and Can’t Afford To
There is a mathematical reality about your 20s that no amount of future effort can overcome: the rand you invest at 22 is worth more at retirement than the rand you invest at 32. Not slightly more. Materially more. The difference between starting a retirement annuity at 22 and starting it at 32 — with identical monthly contributions — can be the difference between retiring comfortably and retiring on less than you planned.
This is not a scare tactic. It is compound interest, and it is the only force in finance that rewards you for doing nothing — as long as you started. Your 20s are the decade where starting matters more than the amount.
Before anything else — how much of your gross income are you currently directing toward retirement? Not “I’ll start when I earn more.” Not “my employer contributes something.” The actual percentage, right now.
The benchmark is 15%. If you’re contributing 5%, you’re planning to retire later, retire on less, or close the gap later — which becomes exponentially more expensive with every passing year. If you’re contributing nothing, that is the only financial problem that matters right now.
To understand the cost of waiting, it helps to see it plainly.
Faiq starts contributing R1,000 per month to a retirement annuity at age 22. He contributes until 65 — 43 years. Total contributed: R516,000. At a 10% annual return, he retires with approximately R8.6 million.
Jenna starts at 32 — just 10 years later. To put in the exact same R516,000 total, she contributes R1,303 per month for 33 years. Same total money in. Same return. She retires with approximately R4.1 million.
Same rand amount contributed. R4.5 million less at retirement. Purely because of when the clock started. This is compound interest working in reverse when you delay — and it cannot be undone.
To understand what catching up actually costs: to reach the same R8.6 million as Faiq, someone starting at 32 would need to contribute R2,773 per month. Starting at 42, the required contribution jumps to R8,041 per month. Starting at 52, it becomes R26,947 per month. The window to close the gap doesn’t just narrow over time. It closes.
The Tax-Free Savings Account allows you to invest up to R46,000 per year, with a lifetime limit of R500,000, free of income tax, dividends tax, and capital gains tax. Every year you don’t contribute, that annual allowance is gone permanently — you cannot carry it forward or catch it up.
A 22-year-old who contributes R46,000 per year for approximately 11 years reaches the lifetime limit by age 33. From that point, the account grows entirely tax-free for the rest of their life. The older you are when you start, the less of the compounding benefit you capture. Open it now, contribute what you can, and treat the annual limit as a target.
Your 20s are when the debt machine is most aggressively marketed to you. A car you can’t quite afford. A credit card with a limit that feels like money. A personal loan for a trip or a renovation or a gap that appeared between your salary and your life.
None of these are emergencies. All of them are choices that, made repeatedly, permanently impair your financial trajectory.
The single most destructive financial decision most South Africans make in their 20s is financing a new car. A R300,000 car on 72-month finance at prime plus 2% costs approximately R430,000 by the time it’s paid off — and is worth R120,000 by then. You paid R430,000 for an asset worth R120,000. That difference — R310,000 — is the compounding wealth you sacrificed. And most people repeat this decision every five years.
Consumer debt — credit cards, store accounts, personal loans — is mathematically worse. At 20–22% interest, you are burning money at a rate no investment can match. If you carry consumer debt, eliminating it is your single highest-return financial action, outperforming every JSE-listed stock.
The most reliable wealth-building system in your 20s is one that doesn’t require willpower. Set up a debit order on the first of every month — before you see your salary in your current account. Direct it to your retirement annuity, your TFSA, and your emergency fund. What remains is what you live on.
This is not about deprivation. It is about sequencing. When you save what’s left after spending, there is nothing left. When you spend what’s left after saving, you build wealth automatically, every month, without a single conscious decision.
Two policies that feel premature in your 20s but are cheapest and easiest to obtain now:
Income protection becomes more expensive and harder to underwrite as you age and accumulate health history. A 24-year-old in good health can obtain broad cover at low cost. A 34-year-old with a back problem, a mental health history, or a chronic condition will pay more or face exclusions. The ideal time to take out income protection is before you need it — which is always before you think you need it.
A Will feels morbid at 25. It isn’t. If you have a partner, a child, a property, or any meaningful assets, you need one. It takes an afternoon and costs very little. The alternative — intestate succession — distributes your estate according to a formula that does not know your wishes and does not protect an unmarried partner.
The one question to sit with
If you projected your current financial habits forward 40 years — the contributions you’re making, the debt you’re carrying, the savings you’re not starting — what would your financial life look like at 65? If the answer is uncomfortable, the cost of changing it has never been lower than it is right now.
Worth reading
I Will Teach You To Be Rich
Practical, direct, and written specifically for people in their 20s who want a system that works without becoming obsessed with personal finance. The automation framework alone is worth the read.