27/04/2026
£5,000 today. £87,000 in 30 years. No genius required.
That's the maths of compounding at roughly the long-term S&P 500 average.
Put £5,000 into a low-cost index fund, leave it alone for three decades, and it grows to around £87,000 — without you having to pick a single stock, time a single trade, or pay a single adviser.
What's powerful about compounding isn't how fast it works.
It's how it accelerates.
For the first few years, almost nothing seems to happen. Your money grows, but not dramatically. It feels like progress is slow. This is where most people give up, or start fiddling — picking hot stocks, trying to time the market, trusting someone else to "do something" with their money.
They're missing the point.
Compounding doesn't reward cleverness. It rewards patience.
The real returns — the ones that change your life — come in the last decade, when your earlier gains are themselves earning. That's the bit most people never see because they've already interfered with it.
The hardest thing in investing isn't picking stocks, reading charts, or timing the market. It's having the self-discipline to leave your investments alone.
Full breakdown with the numbers on my Substack — https://timswealthletter.substack.com/p/the-miracle-of-compounding