Activity-Based Management

Activity-based management uses the detailed activity and cost-driver information generated by activity-based costing to plan and control a company's operations more effectively, extending a costing technique into a genuine management discipline. Where ABC's main job is producing more accurate product and customer costs, activity-based management asks what to actually do with that information once it exists.

A core idea in activity-based management is classifying each identified activity as either value-adding, meaning a customer would genuinely care about it or pay more for it, or non-value-adding, meaning it exists only to compensate for inefficiency, errors, or poor process design — rework, excess inventory handling, or redundant inspections, for example. Once activities are classified this way, management can target non-value-adding activities specifically for reduction or elimination, since cutting them lowers cost without reducing anything a customer actually values.

Activity-based management typically informs decisions such as which product lines or customer relationships are genuinely profitable once the true cost of serving them is understood, where to invest in process redesign to eliminate wasteful activities, and how to set prices or negotiate terms with customers whose service demands consume disproportionate amounts of a company's activities relative to the revenue they generate. A customer that places frequent small orders, requires extensive customization, or generates a high volume of service calls can look profitable under a simplistic costing system while actually destroying value once its true activity consumption is properly traced and costed.

Practitioners sometimes distinguish operational activity-based management, which focuses on doing existing activities more efficiently — reducing the cost or time an activity consumes without changing what gets done — from strategic activity-based management, which uses the same information to decide which products, customers or markets to pursue at all. Both uses rest on the same underlying activity and cost-driver data; they simply apply the insight to different kinds of decisions, one aimed at efficiency and the other at direction.

Activity-based management only works as well as the underlying activity data stays current, which means companies that adopt it need to periodically revisit their activity definitions, cost drivers and consumption estimates as products, processes and customer demands change over time. A company that builds an ABC system once and never updates it risks making decisions based on an increasingly outdated picture of what actually drives its costs, undermining the very accuracy the approach was adopted to achieve.

A distributor using activity-based management discovers that processing small, frequent orders from a particular customer consumes a disproportionate share of its order-entry and shipping activities relative to the modest revenue that customer generates. Rather than simply absorbing the cost, the distributor might renegotiate minimum order sizes, introduce a small-order surcharge, or redesign its order-entry process to handle small orders more efficiently — concrete operational responses that activity-based costing's numbers alone would never force the company to act on without the management layer built on top of them. It is precisely this move from numbers to action that separates activity-based management from activity-based costing on its own.