Calculate the necessary initial systematic investment size to accumulate a real purchasing power of $100,000,000.
$100,000,000 is the nominal goal. At Australia's 2.5% inflation default, $100,000,000 in 25 years has the same purchasing power as $53.94M today — that gap is exactly why this calculator solves for nominal AND real targets, not just nominal.
Two ways to reach $100,000,000: a flat SIP held constant in nominal terms (loses real value each year), or a step-up SIP that rises with inflation (keeps your real savings rate constant). The table below shows what monthly SIP is required for each path across five common horizons.
| Horizon | Flat SIP / month | Total invested (flat) | Step-up SIP / month (start) | Total invested (step-up) |
|---|---|---|---|---|
| 10 yrs | $512.91K | $61.55M | $466.18K | $62.67M |
| 15 yrs | $262.3K | $47.21M | $228.49K | $49.17M |
| 20 yrs | $148.61K | $35.67M | $124.93K | $38.3M |
| 25 yrs | $88.53K | $26.56M | $72.28K | $29.63M |
| 30 yrs | $54.22K | $19.52M | $43.22K | $22.77M |
Assumes 9% expected annual return and 2.5% step-up rate on the step-up column. Longer horizons let compounding do more of the work — the required monthly SIP for 30 years is typically a small fraction of the 10-year requirement, but the total invested rises because you contribute for longer.
We solve for the required initial Systematic Investment Plan (SIP) contribution:
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