What is Payback period?
The payback period answers a single question: from when has this paid for itself? You add up every cost, add up every demonstrable saving or additional revenue, and look for the month in which the second sum overtakes the first. The result is a date in the calendar, and therefore something that can be checked later.
The difference from the popular ROI percentage is decisive. A return without a period is not a statement: 300 per cent over five years and 300 per cent over nine months are entirely different undertakings, and proposals almost always leave the period out. Asking for the payback period forces every calculation to commit to a point in time.
The figure only becomes honest with one hard rule: count only savings that genuinely leave the business. Time saved that removes nobody's paid hours and is sold nowhere does not belong in the numerator. It is a real gain in calm and reliability, but it shortens no payback period.
Why does Payback period matter?
The payback period is the only common viability figure that creates a review date. It names a month in which somebody has to check whether the assumption held - and that check is exactly what is missing from most automation projects, because no measuring point was ever set.
Payback period in practice
- 01An automation costs EUR 4,000 once plus EUR 90 a month and removes eight paid overtime hours a month - the payback period is the month in which the overtime saved exceeds EUR 4,000 plus the monthly charges paid so far.
- 02Two proposals both advertise a 300 per cent return; only the question about the period reveals that one gets there after eight months and the other after four years.
- 03A project saves ten hours a month, but nobody is paid less and nothing extra is sold - the honest payback period is then not long, it is absent.
