Log In
Log In
Led by Margaret Irene Vance-Foster Simulacrum
Eight tutorials on management accounting led by Margaret Vance-Foster — fictional CIMA-qualified Midlands engineer turned finance director, who came up through the factory floor and treats every number as having a physical reality behind it. Covers cost behaviour, costing methods (absorption, marginal, activity-based), cost-volume-profit analysis, budgeting, standard costing and variance analysis, decision-relevant costs, and the difference between accounting for compliance and accounting for decision-making.
Courses are available to holders of a paid pass or membership. See passes & membership →
Led by Margaret Vance-Foster Simulacrum
The question
Cost behaviour — how costs change as activity changes — is the foundational concept on which break-even, contribution analysis, and decision-relevant costing all depend. The module covers the variable/fixed/step/semi-variable categories with worked examples, the high-low method for separating variable and fixed components of mixed costs, the scattergraph and regression-analysis alternatives, the relevant range and where the simplifications break down, and the difference between accounting and economic cost behaviour. The closing exercise decomposes a maintenance-cost dataset.
Outcome
The student can classify costs into variable, fixed, step, and semi-variable categories; apply the high-low method to separate the variable and fixed components of a mixed cost; identify the relevant range for an analysis; and recognise where the simplifications break down. (Cost behaviour)
Practice scenarios
Foster Simulacrum gives you twelve months of data for a manufacturing company's maintenance cost line. The data shows production volumes (units) and total maintenance cost (£) for each month. Volumes range from 4,200 units (in February) to 9,800 units (in October). Maintenance cost ranges from £18,500 (February) to £29,400 (October). The CFO wants to budget next year's maintenance cost on a per-unit basis. Foster Simulacrum wants you to demonstrate why that's wrong, using the high-low method.
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
The two costing methods that produce different unit costs and different reported profits from the same data — and when each is appropriate. The module covers absorption costing (full production cost including fixed overhead absorbed via predetermined rate), marginal costing (variable production costs only, fixed overhead as period cost), the over- and under-absorption adjustment, the inventory effect that drives the profit difference, the IAS 2 / FRS 102 requirement to use absorption for external accounts, and why senior managers should think in contribution terms even when the accounts are absorption-based. The closing scenario produces both income statements from the same data.
Outcome
The student can prepare an income statement using both absorption and marginal costing, reconcile the difference, identify which method is appropriate for which purpose, and calculate contribution and contribution margin. (Costing methods)
Practice scenarios
Your company makes one product. In a typical month, fixed production overhead is £40,000, fixed selling and admin overhead is £30,000, variable production cost is £6/unit, variable selling cost is £2/unit, selling price is £18/unit, normal production capacity is 10,000 units/month. Last month, the company produced 12,000 units and sold 10,000 units (2,000 went into inventory). The CFO wants to see profit calculated under both absorption and marginal costing — and to understand why the two methods give different answers when production exceeds sales.
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
Activity-based costing as the response to traditional absorption costing's misallocation of overhead in modern operations where overhead is large and not driven by direct labour. The module covers the case for ABC, cost pools by activity (setup, materials handling, inspection, design, customer service), cost drivers (number of setups, orders, machine hours, design changes), the two-stage allocation, case studies of ABC revealing hidden cross-subsidisation, time-driven ABC as Kaplan's later refinement, and the question of when ABC pays back the implementation cost. The closing scenario reveals the truth about two customers under ABC.
Outcome
The student can articulate the case for ABC over traditional absorption, set up an ABC analysis with multiple cost pools and drivers, calculate ABC unit costs, identify products or customers that are cross-subsidising others under traditional costing, and decide whether ABC is worth implementing in a given operation. (Activity-based costing)
Practice scenarios
Foster Simulacrum gives you data for a small B2B services company: two customers (A and B), both producing the same revenue of £200,000 per year. Under traditional costing (overhead allocated by revenue), both appear equally profitable: revenue £200k each, allocated overhead £75k each, contribution £50k each (variable cost £75k each), profit £50k each. The CFO wants to renew both contracts at similar terms. Foster Simulacrum suspects this is wrong. Activity data: Customer A places 24 orders/year, requires 8 support calls/year, uses standard pricing; Customer B places 240 orders/year, requires 96 support calls/year, demands custom pricing on every order. Total annual activity costs: order processing £36,000 (264 orders total), customer support £40,000 (104 calls total), pricing & contract admin £24,000 (Customer B requires almost all of it).
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
Budgeting as the management-accounting expression of the operational plan, and the political failure modes that often defeat it. The module covers the master-budget structure (sales → production → materials/labour/overhead → cash → integrated financials), top-down vs bottom-up approaches, zero-based and incremental and activity-based budgeting, the politics of padding and sandbagging and the hockey-stick pattern, the cash budget as the most important and most ignored component, the rolling forecast as alternative to annual budget, and the Hope-and-Fraser *Beyond Budgeting* critique. The closing scenario works through a padded budget.
Outcome
The student can describe the components of a master budget, distinguish bottom-up from top-down approaches, recognise the political failure modes, build a basic cash budget, and run a budget-vs-actual review with meaningful variance interpretation. (Budgeting)
Practice scenarios
You are a divisional finance business partner. The new sales director has just submitted next year's sales budget at £18m, up from £14m this year. They are insisting on a 25% headcount increase, a £400k uplift in marketing spend, and £600k of new sales tools. The sales director's argument: "we need to invest to grow". Your suspicion: the £18m target is a stretch goal padded with wishful thinking; the headcount increase is partly a build-empire move; and the spending is being committed before the revenue has been validated. The CFO wants your recommendation on whether to approve the budget as submitted.
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
Standard costing as the toolkit for comparing actual to expected performance and explaining the difference in a way that drives action. The module covers the standard cost as expected unit cost (basic, ideal, attainable, current standards), the eight standard variances (material price, material usage, labour rate, labour efficiency, variable-overhead rate and efficiency, fixed-overhead expenditure and volume), favourable-vs-adverse interpretation, interaction effects (price-quality trade-off, learning-curve effects), the manager's question of what to investigate, and where standard costing still adds value versus becomes bureaucratic theatre. The closing scenario investigates a set of variances.
Outcome
The student can calculate the eight standard variances from given data, interpret favourable and adverse variances correctly (including the interaction effects), distinguish causes from responsibilities, and design a variance report that drives action rather than blame. (Standard costing and variance analysis)
Practice scenarios
Foster Simulacrum gives you the variance report from a manufacturing department. Material price variance: £18,000 favourable. Material usage variance: £24,000 adverse. Labour rate variance: £5,000 adverse. Labour efficiency variance: £15,000 adverse. The department manager is celebrating the £18k price saving. Your job is to investigate before management acts on the apparent savings.
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
Cost-volume-profit analysis — the management-accounting toolkit for break-even, target-profit, margin-of-safety, and operating-leverage questions. The module covers the three CVP inputs (selling price, variable cost per unit, total fixed cost), contribution per unit and contribution margin ratio, the break-even formulas, the CVP graph, multi-product CVP using weighted-average contribution, sensitivity analysis on the inputs, the relationship between operating leverage and volatility, and the limits where CVP assumptions break down. The closing scenario decides whether to accept a special order using CVP.
Outcome
The student can calculate break-even units, break-even revenue, target-profit volume, margin of safety, and operating leverage from given data; draw the CVP graph; perform sensitivity analysis on the inputs; recognise where CVP assumptions break down; and use CVP to inform pricing and product-mix decisions. (Cost-volume-profit)
Practice scenarios
Your company makes a product with selling price £80, variable cost £50, contribution £30 (37.5% margin). Fixed cost is £600,000/year. Current annual sales are 25,000 units, generating £750,000 contribution and £150,000 profit. A potential new customer is offering to buy 4,000 units at £62 — substantially below the standard price. The sales director wants to accept (additional revenue of £248,000); the production director is reluctant (the price is barely above variable cost). The factory has spare capacity. The CFO wants your view.
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
Relevant-cost analysis — the discipline of identifying which costs and revenues actually change with a specific decision, and which (sunk, allocated, committed) do not. The module covers the relevance criterion, the sunk-cost fallacy, allocated vs avoidable overhead, opportunity costs, differential analysis, the typical decision types (make-or-buy, keep-or-drop product lines, accept-or-reject special orders, sell-or-process-further), and the difference between accounting numbers (financial-statement view) and decision numbers (relevant-cost view). The closing scenario decides whether to drop a product line.
Outcome
The student can identify which costs and revenues are relevant for a specific decision, separate sunk costs from going-forward costs, recognise allocated vs avoidable overheads, identify opportunity costs, and produce a decision-relevant analysis for make-or-buy, keep-or-drop, and similar choices. (Decision-relevant costs)
Practice scenarios
Your company has four product lines. The accounts show Product C as a £180,000 annual loss: revenue £600,000, variable cost £450,000, allocated central overhead £200,000, contribution to direct fixed costs £130,000, line-specific direct fixed cost £60,000, allocated head-office costs £200,000 — apparent loss £130k contribution minus £60k direct minus £200k allocation = −£130k. (Numbers are illustrative; the apparent loss arises mainly from the central allocation.) The CFO wants to drop Product C. The CEO is uncertain. Foster Simulacrum wants you to do the decision-relevant analysis.
Your goals
Led by Margaret Vance-Foster Simulacrum
The question
Performance measurement that goes beyond decision-making to align individual incentives with organisational goals. The module covers responsibility accounting and the controllability principle, cost/profit/investment centres, transfer pricing between divisions (cost-based, market-based, negotiated), ROI/residual income/EVA as investment-centre measures, Kaplan and Norton's Balanced Scorecard with its four perspectives (financial, customer, internal process, learning and growth), the dysfunctional consequences of single-measure performance management, and the management accountant's role as business partner. The closing scenario designs a Balanced Scorecard for a specific organisation.
Outcome
The student can apply the controllability principle to performance measurement, design a basic Balanced Scorecard for an organisation, distinguish responsibility centres, calculate ROI and residual income, identify the failure modes of single-measure performance management, and articulate the strategic role of the management accountant.
Practice scenarios
A friend has just been promoted to general manager of a £40m-revenue UK division. The division has been managed for the last decade entirely by reference to monthly profit (compared to budget), and the outgoing GM is leaving with a reputation for "hitting the numbers" by aggressive cost-cutting that has hollowed out customer service, exhausted the operational team, and starved the product roadmap. Your friend wants to introduce a Balanced Scorecard but is worried about how to do it without provoking a revolt from a leadership team trained on a single number.
Your goals