Compound Growth
The only thing that beats time is starting.
Compound growth is not a trick. It is arithmetic. When your returns generate their own returns, the function is exponential, not linear. The problem is that exponential functions feel slow at the beginning, which is exactly when starting matters most.
How it works
If you invest S$50,000 today and add S$1,000 per month at a 7% annual return, here is what your portfolio looks like at each milestone. Notice how the growth accelerates after year 15: that is compound growth becoming dominant over your contributions.
| Year | Total invested | Portfolio value | Growth |
|---|---|---|---|
| 5 | S$110K | S$131K | +S$21K |
| 10 | S$170K | S$225K | +S$55K |
| 15 | S$230K | S$358K | +S$128K |
| 20 | S$290K | S$553K | +S$263K |
| 25 | S$350K | S$839K | +S$489K |
| 30 | S$410K | S$1.26M | +S$854K |
Assumes 7% annual return, S$50K initial, S$1,000/month contributions. Illustrative only.
The 5-year delay penalty
Starting at 30 instead of 25, with identical contributions and returns, reduces your portfolio at 55 by roughly 30%. That gap is not recoverable through higher contributions without dramatically changing your lifestyle. The math is unforgiving because time is the variable you can only spend once.
Start at 25, retire at 55
S$1.26M
Start at 30, retire at 55
S$882K
S$378K less, same contributions
What this means for your FI date
Every year you delay starting is an asymmetric loss: you lose the contribution, plus the compound growth it would have generated for every subsequent year. Conversely, every year you start earlier moves your FI date forward by more than one year. The leverage runs in both directions.