Sunday, 23 August 2026

A note on relevant information for decision making terms in advanced management accounting study

A note on "relevant information for decision making terms" in advanced management accounting study


Briefly describe the following relevant information for decision making terms in advanced management accounting study

(Terms used in Chapter 10)

 

1.    Relevant costs and relevant revenues

2.    Differential cost

3.    Relevant qualitative factors

4.    Potential problems in relevant-cost analysis

5.    Make-or-buy decisions

6.    Opportunity costs, outsourcing and capacity constraints

7.    Carrying costs of stock

8.    Customer profitability and relevant costs

9.    Irrelevance of sunk cost and book value

 

Relevant-cost analysis supports short-term decisions by comparing only the future cash flows that change between alternatives. It avoids decisions being distorted by allocated overheads, historical costs, or accounting book values.

Core relevant-cost concepts

1.    Relevant costs and relevant revenues
These are future costs and revenues that will differ depending on which option management chooses. A cost or revenue that is identical under all alternatives is irrelevant because it cannot affect the choice. Relevant costs are normally incremental/avoidable cash flows.

2.    Differential cost
Differential cost is the difference in total cost between two alternatives; it is also called incremental or avoidable cost when it arises from choosing one option rather than another. For example, if outsourcing costs $120,000 and internal production creates avoidable costs of $95,000, the $25,000 difference favours making—before considering capacity opportunity costs.

3.    Relevant qualitative factors
Important non-financial factors may override a narrow cost comparison. These include supplier quality and reliability, delivery lead times, loss of technical know-how, intellectual-property risk, employee morale or redundancies, customer service, strategic dependence on a supplier, and flexibility to respond to demand changes. A make-or-buy decision should therefore combine relevant-cost data with these operational and strategic considerations.

Limitations and pitfalls

4.    Potential problems in relevant-cost analysis
Common problems include:

o   Using full absorbed product costs, including unavoidable fixed overhead, instead of avoidable future cash flows

o   Omitting opportunity costs where scarce capacity has an alternative profitable use

o   Making inaccurate forecasts about volumes, prices, quality failures, or supplier performance

o   Treating a short-term decision as if it had no long-term strategic consequences

o   Ignoring qualitative factors that are difficult to quantify

o   Assuming fixed costs are unavoidable when some can actually be removed, or assuming they are avoidable when they are committed

5.    Irrelevance of sunk cost and book value
A sunk cost is a past cost that has already been incurred and cannot be changed, such as prior development expenditure or the original cost of old machinery. Book value—original cost less accumulated depreciation—is generally also historical and non-cash, so it is irrelevant. However, a machine’s future resale/disposal value is relevant because it is a future cash inflow that can differ between alternatives.

Sourcing and capacity

6.    Make-or-buy decisions
Management should make internally when the relevant cost of internal production is lower than the relevant cost of purchasing externally; otherwise it should buy. Relevant make costs usually include direct materials, direct labour, variable overhead, avoidable fixed costs, and any opportunity cost of capacity. Relevant buy costs include supplier price, inspection, transport, receiving, contract-management, and any necessary inventory or quality-control costs.

7.    Opportunity costs, outsourcing and capacity constraints
Opportunity cost is the contribution or benefit forgone from the next-best use of a scarce resource. It is not normally recorded in financial accounts, but it is economically relevant. If the business has idle capacity, using it to make a component usually has no capacity opportunity cost. If capacity is fully used, making a component may sacrifice contribution from another product; that forgone contribution must be added to the cost of making before comparing it with outsourcing.

Inventory and customer decisions

8.    Carrying costs of stock
Carrying, or holding, costs are the costs of keeping inventory over time. They include:

o   Opportunity cost of capital tied up in stock or inventory-financing interest

o   Warehouse rent, utilities, handling, and inventory administration

o   Insurance and applicable taxes

o   Obsolescence, deterioration, damage, theft, and shrinkage risks
These costs matter in decisions about order quantity, supplier arrangements, safety stock, and whether to hold stock internally or let suppliers hold it.

9.    Customer profitability and relevant costs
Customer profitability assesses revenue from an individual customer or customer segment less the costs attributable to serving them. Beyond product cost, relevant customer-specific costs can include sales commissions, account-manager time, order processing, bespoke packaging, deliveries, returns, customer service, promotional support, warehousing, and credit collection. Activity-based costing can improve this analysis by tracing costs through customer-related activities and cost drivers.

A customer with high sales revenue may still be unprofitable if they require frequent small orders, special handling, heavy support, long credit terms, or high returns. The management response need not be to drop the customer: it may instead redesign service, introduce minimum-order quantities, alter pricing, or renegotiate terms.


** also study the videos on this topic: video 1; video 2; video 3.




 

A collection of notes on advanced management accounting

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