A note on activity-based management

A note on activity-based management

 

Activity-based management (ABM) uses activity-based costing (ABC) information to improve both operating efficiency and strategic profitability. Whereas ABC identifies the cost of activities, products, services, and customers, ABM uses that insight to change processes and resource use—aiming to deliver the same or greater customer value at lower cost.

Five main sub-topics

Sub-topic	What it covers	Typical advanced-management-accounting focus
1. Activity-based costing foundation	Identifying activities, creating activity cost pools, tracing resource consumption, and allocating activity costs to cost objects through appropriate drivers.	Calculate activity-driver rates and produce more accurate product, service, channel, or customer costs than conventional volume-based overhead absorption. A cost object can be a product, customer, order, service, or distribution channel.
2. Cost-driver and root-cause analysis	Distinguishing activity drivers used to assign costs from the underlying causes that make activities necessary or costly.	Analyse why costs arise—not simply where they are allocated. For example, “number of purchase orders” may allocate procurement cost, while supplier unreliability or fragmented ordering may be the root causes that generate excessive orders. This supports cost reduction at the source.
3. Process value analysis	Mapping processes and evaluating whether each activity adds value from the customer’s perspective.	Classify activities as value-added, non-value-added, or necessary but non-value-added; then eliminate, reduce, simplify, automate, combine, or redesign wasteful work. This is the operational-improvement core of ABM.
4. Operational ABM and performance improvement	Using activity information to “do things right”: improve efficiency, quality, speed, capacity use, and continuous improvement.	Develop activity-level performance measures—for example, cost per invoice processed, order-to-delivery time, defect rate, rework hours, or percentage of first-time-right transactions. Benchmarking and re-engineering are commonly linked to this sub-topic.
5. Strategic ABM and profitability management	Using more reliable activity-cost data to “do the right things”: make decisions about products, customers, pricing, channels, service levels, and resource commitments.	Assess product/ customer profitability, identify loss-making complexity, decide which products or customers to prioritise, redesign service offerings, and support pricing or outsourcing decisions. Strategic ABM moves beyond cost cutting to improving the organisation’s overall profit mix and customer value.

How the topics connect

A useful way to present ABM in an MBA answer is as a sequence:

1.    Measure activities accurately through ABC.

2.    Identify the drivers and root causes of activity costs.

3.    Assess value creation through process value analysis.

4.    Improve operational processes using performance measures and continuous improvement.

5.    Make strategic choices about products, customers, pricing, and capacity.

Simple illustration

For an online retailer, ABC may reveal that small, urgent, individually packed orders consume disproportionately high picking, packaging, customer-service, and returns-processing activity costs. ABM then asks:

• What causes those costly activities—such as small order sizes, rushed delivery promises, inaccurate product information, or high return rates?
• Which activities add customer value and which merely correct failures?
• Should the retailer redesign fulfilment processes, set a minimum order value for free delivery, change packaging, revise product descriptions, or apply differentiated service/pricing to high-cost customer segments?

Thus, the advanced perspective is not merely “calculate a more accurate unit cost.” It is to use activity information to improve processes, customer value, and strategic profitability.

** reference:  a collection of management accounting notes