Contract Manufacturing, Job Shop Quoting & Make-to-Order worked example

Customer Change Cost at 72% customer-approved change scope: a worked example

This worked example runs the customer change cost numbers for a tougher week than the baseline: 72% customer-approved change scope instead of the typical 100%. Estimate cost caused by customer changes after quote or order release.

The inputs for this scenario

  • Units affected by customer change: 380 units (held at the documented default)
  • Change cost per affected unit: 12.75 $ / unit (held at the documented default)
  • Customer-approved change scope: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed change-order cost: 1,850 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable customer change cost = units affected by customer change × change cost per affected unit × customer-approved change scope.
  • total customer change cost works out to 5,338 $ at these inputs, and this is the headline figure for the scenario.
  • change cost per affected unit works out to 14.05 $ / piece at these inputs.
  • variable customer change cost works out to 3,488 $ at these inputs.
  • fixed change-order cost works out to 1,850 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where customer-approved change scope sits at 100% and the headline result is 6,695 $, this scenario comes in 20.26% below the baseline at 5,338 $.
  • Use it when a customer requests a revision to an open order, a dimension change, a new finish, a substituted material, and you need to price the resulting change order. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • total customer change cost: 5,338 $ (headline result)
  • change cost per affected unit: 14.05 $ / piece
  • variable customer change cost: 3,488 $
  • fixed change-order cost: 1,850 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Customer Change Cost calculator, set customer-approved change scope to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.