Payback Period Calculator
Initial cost
usd
Cash flow a year
usd
Net of running costs. For an energy retrofit this is the saving on the bill, not the gross output.
Discount rate
percent
What the money would earn elsewhere. Set it to zero to see the simple payback alone.
Project life
years
How long the asset keeps producing the cash flow. A payback longer than this means it never repays.
Discounted payback
5.27 years
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Payback Period Calculator
by Rule Calculator