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Simple payback period
Estimate time to recover an upfront cost from net monthly savings.
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Your result
How this works
Estimate time to recover an upfront cost from net monthly savings.
Formula
Payback months = upfront cost ÷ (monthly benefits − ongoing cost).
Assumptions and limits
Requires positive net savings. Excludes financing, tax and time value of money.
Worked example
Replace the example with your own figures, then compare scenarios. Include all relevant costs and use records from matching periods.