Worked examples / Putting it off
A $600 roof patch put off through the winter, with a 4 in 10 chance of $6,000 of water damage.

Putting it off for 6 months costs you $2,148.
This is a worked example with illustrative figures, not data about any real person or company. Change any of them in the calculator and the answer changes with them.
How this answer was worked out| Cost later | $600 |
| Expected later | 60% x $600 + 40% x $6,000 = $2,760 |
| Carrying cost | $0 x 6 = $0 |
| Earned by waiting | $600 x 4% x 6 / 12 = $12 |
| Putting it off costs | $2,760 + $0 - $12 = $2,748 |
| Waiting costs you | $2,748 - $600 = $2,148 |
| Per $1 put off | $4.58 |
| Break-even chance | 0.2% |
Every formula is written out on the formulas page.
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