Break-even
Classify costs, calculate revenue and profit, find break-even and interpret how business decisions change the result.
How to study National 5 Business Management
Learn the concept, apply it to a real organisation, trace the consequence and make a decision supported by financial or qualitative evidence.
Core concepts
Concept 1
Fixed costs do not change directly with output in the relevant period; variable costs change with output.
Exam cue: Write the relationship before substituting values.
Concept 2
Total cost combines fixed and total variable costs, while sales revenue is selling price multiplied by quantity sold.
Exam cue: Keep unit variable cost separate from total variable cost.
Concept 3
Profit is sales revenue minus total cost; break-even occurs where total revenue equals total cost.
Exam cue: Interpret a chart using labelled axes and the intersection.
Concept 4
Break-even charts show cost, revenue, loss and profit regions and the effect of changing assumptions.
Risk pitfalls and guardrails
Treating fixed cost as zero when production stops temporarily.
Guardrail: Check the organisation type, objective, stakeholder, time period and whether the evidence supports the strength of the judgement.
Subtracting variable cost per unit directly from total revenue.
Guardrail: Check the organisation type, objective, stakeholder, time period and whether the evidence supports the strength of the judgement.
Calling every sale above zero profit.
Guardrail: Check the organisation type, objective, stakeholder, time period and whether the evidence supports the strength of the judgement.
Memory anchors
Total variable cost
Variable cost per unit multiplied by output.
Total cost
Fixed costs plus total variable costs.
Sales revenue
Selling price per unit multiplied by quantity sold.
Profit
Sales revenue minus total cost.
Break-even point
The output where total revenue equals total cost.
Chart intersection
Where the total-revenue and total-cost lines meet.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What is a fixed cost?
Which is most likely a fixed cost?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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