The payback period answers a simple question: from when has an investment paid for itself? Investment sum divided by monthly additional return — that is the month in which the investment is covered. Everything beyond that is net return.
Payback period is the right metric for manageable, one-off investments with measurable additional return: a trade fair appearance, a marketing automation system, a new sales position, a brand refresh. It is less suitable for strategic measures with diffuse effects (reputation, positioning) — there, a longer observation period with ROMI helps.
Typical averages among mid-sized companies: 12–24 months for sales and acquisition investments, 6–12 months for performance marketing, 24–36 months for brand and positioning work. The calculator shows whether the payback period still falls within the observation period.