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Field note · Supply chain cost

The return you did not price: quality, returns and rework in high-frequency ordering.

More orders mean more points where something can go wrong: a wrong delivery, a damaged item, a mismatched invoice, a return. Each of those consumes capacity twice, once to do the work and once to undo it, and most cost systems never connect that cost back to the ordering pattern that caused it. This is the third hidden cost of buying little and often.

Illustrative.

The first field note covered the cost of receiving; the second, the cost of holding. There is a third hidden cost that sits on top of both, and it is the one most often missed entirely: the cost of things going wrong. Every order is a point of failure waiting to happen. The more orders you place, the more deliveries can arrive wrong, damaged, short or late, and the more invoices can fail to match. Each problem triggers a chain of corrective work, investigating, returning, re-ordering, re-receiving, crediting, that consumes capacity twice for a single unit of value. A return is not one cost; it is the original handling cost plus the cost of reversing it.

High-frequency ordering quietly multiplies this risk. If a single delivery carries a small probability of a problem, then a thousand deliveries carry that probability a thousand times over. The total volume of goods might be identical to a few large orders, but the number of opportunities for error is far higher, and error is expensive in a way that rarely shows up where the decision is made. The buyer sees the unit price. The cost of the resulting returns and rework lands somewhere else entirely, in operations, in quality, in finance, disconnected from the ordering choice that drove it.

Cost to serve and time-driven costing reconnect them. By measuring the capacity that returns, rework and exception-handling actually consume, and tracing it back to the products, suppliers and order patterns that generate it, the true cost of a high-touch ordering relationship becomes visible. In an illustrative case, a business that prided itself on low purchase prices found that a handful of suppliers, delivering frequently and imperfectly, were generating a disproportionate share of its returns and quality cost, enough to erase the price advantage that justified buying from them. The price was the cheapest part of the story. Figures illustrative.

The remedy is not to fear returns but to price them. When the cost of quality failure is traced back to the ordering pattern, two things change. Buyers can compare suppliers on total cost including the failures they cause, not just the price they quote. And the case for fewer, cleaner, better-controlled deliveries gets the financial backing it usually lacks. The return you did not price is still costing you. Pricing it is how you stop it.

The takeaway

Every order is a potential failure point, and a return costs you twice: once to handle, once to reverse. Trace returns and rework back to the supplier and order pattern that caused them, and the cheapest price often turns out to be the most expensive choice.

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Proof

A distributor in New Zealand. €1.335M of cost-to-serve made visible, then halved, and 830 loss-making customers brought down to 295.

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Who you would be talking to

Miguel Guimarães, Founding Partner

Cost and profitability practitioner for 25+ years. Presented the Damco cost-to-serve case at Managing for Profit (Amsterdam RAI, December 2009), on the same programme as Robert S. Kaplan.

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Miguel Guimarães

Written by

Miguel Guimarães

Founding Partner, Cost and Profitability Consulting

More than 150 Time-Driven ABC engagements across 11 sectors since 2010, working within the Kaplan and Anderson framework.

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