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tool 02/07 — fire

FIRE Number + Cost of Waiting

Your FIRE number is the pot that lets work become optional. Below it: what the same target costs per month if you start five or ten years later. The second number is the one people underestimate.

30
50
20 years of runway to build the pot
S$4,000/mo
your FIRE number
to get there
the cost of waiting
start nowS$4,338/mo
wait 5 years+S$2,333/mo
wait 10 years+S$7,145/mo

People aiming to make work optional by 50 are typically setting aside S$4,338/mo at this lifestyle and return. Waiting five years pushes that to roughly S$6,671/mo for the same finish line — the extra S$2,333 is the price of a later start, not a bigger goal.

This is a population benchmark, not advice — the real plan depends on what you already hold, CPF, and how the market actually behaves.

The actual Goals worksheet from the client planning workbook, computing a FIRE amount from lifestyle, inflation and return inputs — sample data
the actual worksheet this tool is distilled from — the same FIRE math my clients get, sample data shown. not an AI mock-up.

assumes 2% inflation, the 25× rule (4% withdrawal), returns as a stated assumption not a promise, and saving from zero. figures: general planning conventions, 2026.

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