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MENTAL MODEL · M3521

Throughput Accounting

Throughput Accounting
DecideHigh supportDecision Science
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Updated 2026-07-31

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INTRODUCTION

English translation pending.

CORE DEFINITION

A management accounting approach developed by Eliyahu Goldratt as part of the Theory of Constraints. It reduces performance to three measures: throughput, the rate at which the system generates money through sales; inventory, the money invested in things intended for sale; and operating expense, the money spent turning inventory into throughput. Crucially, throughput counts only what is sold, not what is produced. The method rejects allocating cost across products because allocation points decisions away from the resource that actually limits earnings.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Profit compass: Judge an improvement by whether it raises sold output rather than by local efficiency. - Waste check: Treat production that does not sell as inventory cost, not as achievement. - Bottleneck pricing: Value capacity by bottleneck hours consumed rather than by machine utilisation.

anchor

Anchor fast decisions

In a constrained system the bottleneck sets total output, so improving anything else adds only inventory and cost. Conventional cost accounting spreads overhead across products, which makes a product look expensive because it consumes machine time rather than because it consumes the scarce resource. Measuring throughput against bottleneck time instead aligns each decision with the one resource that actually limits earnings, so local gains stop masquerading as profit.

MINIMUM ACTION

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Throughput_accountingZH · Explicit
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