Aftermarket, Field Service & Service Parts worked example

Aftermarket Program ROI Payback with aftermarket program investment of 462,500 $: a worked example

Push aftermarket program investment up to 462,500 $ and the picture changes. This example computes every intermediate figure at that operating point. an aftermarket leader needs to justify investment in a service, parts, or field support improvement program

The inputs for this scenario

  • Aftermarket program investment: 462,500 $ (raised for this scenario; the documented default is 185,000)
  • Annual savings or margin lift: 92,000 $ / yr (unchanged)
  • Annual program support cost: 18,000 $ / yr (unchanged)

Working through the calculation

  • Applying the documented formula (Net annual aftermarket benefit = annual savings or margin lift - annual program support cost) to the inputs above produces each figure below.
  • At this operating point the engine returns 6.25 yr payback for aftermarket roi payback, the number this scenario is built around.
  • At this operating point the engine returns 74,000 $ / yr for net annual aftermarket benefit.
  • At this operating point the engine returns 462,500 $ for aftermarket program investment.
  • At this operating point the engine returns -92,500 $ for five-year aftermarket net value.

How this compares with the baseline

  • Against the tool's baseline example, where aftermarket program investment sits at 185,000 $ and the headline result is 2.5 yr payback, this scenario comes in 150% above the baseline at 6.25 yr payback.
  • It divides your aftermarket program investment by the net annual benefit (margin lift minus recurring support cost) to return a simple payback period in years. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Aftermarket ROI payback: 6.25 yr payback (headline result)
  • Net annual aftermarket benefit: 74,000 $ / yr
  • Aftermarket program investment: 462,500 $
  • Five-year aftermarket net value: -92,500 $

Run it with your numbers

  • Every input above is editable in the live Aftermarket Program ROI Payback calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.