Payback Period

investment

Also known as: payback period, simple payback, discounted payback

Updated · Written and reviewed by Konstantin Iakovlev

Detailed explanation

Common in capital-budgeting and home improvements. Solar panel example: $20,000 system saves $2,000/year in electricity → 10-year simple payback. Heat-pump replacement: $15,000 install, $1,500/year savings → 10-year payback (improves to ~7 years with IRA tax credits). Limitation: ignores cash flows after payback (a 5-year payback on a 6-year-life asset is worse than a 7-year payback on a 25-year-life asset). Better metrics for capital decisions: NPV (net present value) and IRR. Useful as a quick sanity check and risk gauge — shorter payback = lower risk of obsolescence or technology shift before recoupment.

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