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Charging supplier complaint costs: what to claim and how to document it

Which costs of a supplier quality complaint can be charged back, how to value sorting, scrap, line stops and freight, how to share responsibility and how to write a debit note the supplier accepts.

Ľubomír Blažek
Automotive quality manager · updated 2026-10-31

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Theory: cost recovery needs evidence

A defective delivery causes cost far beyond the part price: sorting, scrap, rework, line stops, premium freight, laboratory tests, engineering time and often a debit note from your own customer. These costs belong to the supplier when the supplier caused them and the supply agreement provides for cost recovery.

Claim = Σ (quantity × unit cost) + administration fee, × supplier share of responsibility

Key point

A claim with itemised quantities, rates and evidence is accepted far more often than a lump sum.

Step by step

  1. Record the facts from the first hour: affected delivery notes and batches, quantities checked and found defective, photos.
  2. Log the effort: sorting hours, scrapped parts and their value at the point of detection, downtime minutes, extra transports, tests.
  3. Enter the items in the complaint cost calculator and add costs passed on by your customer.
  4. Set the share if part of the cause is on your side.
  5. Send the claim letter with the evidence, refer to the agreement and request the 8D. Issue the debit note after confirmation or the agreed deadline.
  6. Book the amounts in your cost of poor quality as supplier-caused and recovered.

Example: flash on a seal ring

A delivery of 6 000 seal rings shows flash on the sealing lip and leaks at end-of-line testing. Sorting takes 36 hours at 32 EUR, 52 rings are scrapped at 18.40 EUR, the line stops for 45 minutes at 25 EUR per minute, two premium shipments cost 380 EUR each, three lab tests 120 EUR each, 14 hours of 8D work at 55 EUR, and the customer charges 1 500 EUR. With a 150 EUR administration fee and re-labelling the total is about 6 942 EUR, or 133 EUR per defective part.

Common mistakes

  • Claiming months later without records of the hours and quantities.
  • Valuing scrap at the sales price instead of the cost at the point of detection.
  • No cost recovery clause in the supply agreement.
  • Charging but not asking for the 8D, so the problem comes back.

Frequently asked questions

Can I charge a flat fee per complaint?

Only if the supplier quality agreement says so. Many agreements define an administration fee per complaint in addition to the real costs.

What hourly rate should I use?

Your documented internal rate (wage plus overhead) or the invoice of the sorting company. Avoid inflated rates; they make the whole claim disputable.

What if the supplier rejects the claim?

Go back to the evidence and the agreement. If the root cause is shared, for example an unclear drawing, a reduced share is usually faster than a dispute.