Marginal Analysis
2. Provides relevant accounting information for management decision making.
Relevant Revenue and Cost Characteristics
Incremental Costs vs. Marginal Costs
Differential Cost vs. Avoidable Costs
2. Avoidable: costs that will be avoided if particular decision is made
Explicit Costs vs. Implicit Costs
2. Implicit: costs that do not represent cash outflows but is included in decision making
Sunk Costs
Costs that have already incurred and will neither change future decisions nor be recovered.
Irrelevant because:
Example:
Opportunity Costs
Examples:
Relevant Cost Application: Scarce Resources Decision
Decision: optimize use of scarce resources by producing item that will maximize profitability
Rule: Prioritize to produce item with highest contribution margin per scarce resource and allocate remaining capacity based on ranking highest to lowest.
Relevant Costing Application: Special Order Decision
Decision: Accept or reject a special order
Rule: Accept if the order produces incremental profit; otherwise decline.
Considerations:
Relevant Costing Application: Make or Buy Decision
Decision: Make or Buy (or outsource) an item
Rule: Choose the option with lowest relevant costs; lowest between relevant costs or make and relevant costs to buy.
Relevant Costing Application: Continue or Drop a Segment
Decision: Continue or drop a segment
Rule: If the segment margin is positive, then continue operating the segment. Otherwise, drop it.
Marginal Cost Formula
= Change in Total Cost / Change in Units Produced
Marginal Revenue Formula
= Change in Total Revenue / Change in Units Produced