QMS, CAPA & Quality System Management worked example

Complaint Handling Cost at 43% share of complaints requiring formal investigation: a worked example in qms, capa & quality system management

This worked example runs the complaint handling cost numbers for a tougher week than the baseline: 43% share of complaints requiring formal investigation instead of the typical 60%. Estimates the cost of handling customer complaints by combining per-complaint investigation effort with fixed complaint-system overhead.

The inputs for this scenario

  • Customer complaints received in period: 140 complaints (held at the documented default)
  • Investigation cost per complaint: 280 $/complaint (held at the documented default)
  • Share of complaints requiring formal investigation: 43 % (the input this scenario stresses; the baseline uses 60)
  • Fixed complaint-system overhead: 4,500 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total complaint cost = complaints x investigation cost x investigation share + system overhead.
  • Total complaint handling cost works out to 21,356 $ at these inputs, and this is the headline figure for the scenario.
  • Complaint handling cost per unit works out to 153 $ / piece at these inputs.
  • Variable complaint handling cost works out to 16,856 $ at these inputs.
  • Fixed complaint handling cost adder works out to 4,500 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where share of complaints requiring formal investigation sits at 60% and the headline result is 28,020 $, this scenario comes in 23.78% below the baseline at 21,356 $.
  • Use it during cost-of-quality reviews, when justifying prevention spend, or when benchmarking your complaint-handling efficiency period over period. 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 complaint handling cost: 21,356 $ (headline result)
  • Complaint handling cost per unit: 153 $ / piece
  • Variable complaint handling cost: 16,856 $
  • Fixed complaint handling cost adder: 4,500 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Complaint Handling Cost calculator, set share of complaints requiring formal investigation to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.