All credit for this text goes to...
Garrison, R. H., Webb, A., & Libby, T. (2024). Managerial Accounting (13th Canadian ed.). McGraw-Hill Ryerson.
Study Session Meta (delete when complete)
LO Coverage & Mastery
LO Title Status Mastery Notes Section 1 Why organizations budget; processes for creating budgets ✅ Complete ✅ Mastered §1 Why Budget? 2 Master budget components (Schedules 1–10) ✅ Complete ✅ Mastered §2 Building the Master Budget 3 Flexible budgets ✅ Complete ✅ Mastered §3 When Plans Meet Reality 4 Performance reports using flexible budget approach ✅ Complete 🔶 Understood §3 When Plans Meet Reality 5 (Appendix 9A) Optimal inventory & order size ⬜ Skipped — Not exam-relevant Mastery Gaps (Review Before Exam)
- LO1: Responsibility accounting definition was loose — tightened ✅
- Pre-mortem flag: Actual vs. applied overhead distinction. Budgets = applied (POHR-based). Reconciliation = comparing applied to actual. Tripped up on Midterm 1. Review Chapter 3/5 before Midterm 2.
- Drill schedule-to-budget name mapping (know what each schedule does, not the numbers)
- LO4: Variance offset math — struggled with the arithmetic when variances go in opposite directions. Drill: Activity + Spending = Total (U positive, F negative for costs)
Vocabulary Tracker
Term Tier Location Budget T1 §1 Glossary Budgeting T1 §1 Glossary Budgetary control T1 §1 Glossary Master budget T2 §1 Vocab Participative budget T1 §1 Glossary Budgetary slack T2 §1 Vocab Responsibility accounting T2 §1 Vocab Continuous (perpetual) budget T1 §1 Glossary Ceteris Paribus T3 Ceteris Paribus Flexible budget T2 §3 Vocab Static budget T2 §3 Vocab Activity variance T2 §3 Vocab Spending variance T2 §3 Vocab Static budget variance T2 §3 Vocab Minimum cash balance T1 §2 Glossary Parking Lot (Later LOs)
- What is a flexible budget and how does it relate to the static budget? (Previewed during LO1 — resolved)
- Full flexible budget construction mechanics (LO3 — resolved)
- Performance report: activity variance vs. spending variance breakdown (LO4 — resolved)
- Beyond the Textbook: How do companies decide the minimum cash balance? Treasury management, Miller-Orr model, opportunity cost of idle cash, liquidity risk. Connects to corporate finance.
- Beyond the Textbook: Ceteris paribus as a general diagnostic framework — choosing what to hold constant determines what question you’re answering. Connects to Ceteris Paribus, experimental design, A/B testing, sensitivity analysis.
Session Log
Date LOs Covered Mastery Results Key Clarifications 2026-03-08 LO1 ✅ Mastered Planning vs. control are actions not budget types; static vs. flexible are budget structures not purposes; flexible budget = ceteris paribus (hold rates, change volume); budgetary slack requires intent to hide capacity 2026-03-08 LO2 ✅ Mastered Master budget = collection of schedules; sales is root; universal formula (Action = Need + Ending − Beginning) applies to inventoriable items only; cash budget financing: interest first then principal in increments; each loan tracks separately for interest; cash budget shows flows not stock 2026-03-08 LO3 ✅ Mastered Flexible budget = actual volume × budgeted rates; sits between static and actual as translation layer; isolates volume so flexible-vs-actual comparison reveals only cost performance; fixed costs unchanged across all three columns 2026-03-08 LO4 🔶 Understood Activity variance (static↔flexible) + spending variance (flexible↔actual) = total static budget variance; variances can offset (one F, one U); F/U labels describe cost direction not whether cause is good; struggled with offset arithmetic
Note on Organization
This chapter answers one core question: How do organizations translate plans into financial budgets, and how do they evaluate performance against those budgets?
These notes are organized as a teaching flow, not a textbook mirror:
Section What It Teaches Textbook LOs §1 Why Budget? Purpose, process, and the people problems that budgets create LO1 §2 Building the Master Budget The schedule chain — how 10 schedules connect, and the universal formula that drives half of them LO2 §3 When Plans Meet Reality Why static budgets fail at evaluation → flexible budgets as the fix → the two variances that make performance reports useful LO3 + LO4 Exam intel: Professor confirmed the cash budget will be tested — expect to write it by hand. That likely means knowing all upstream schedules too, since the cash budget pulls from them.
Confusion Flag — Production Budget: Year's Beginning Inventory
What confused me: When looking at the “Year” column in production and direct materials budgets, the year’s beginning inventory is NOT the sum of all four quarters’ beginning inventories. It’s just Q1’s beginning inventory. Same pattern: the year’s ending inventory = Q4’s ending inventory.
Why it works: Each quarter’s ending inventory becomes the next quarter’s beginning inventory. They’re the same units rolling forward — not independent pools. Summing them would quadruple-count inventory that carries over.
Q1 ending → Q2 beginning (same units) Q2 ending → Q3 beginning (same units) Q3 ending → Q4 beginning (same units)The rule: For ANY budget with quarterly breakdowns:
- Year’s beginning balance = Q1’s beginning balance
- Year’s ending balance = Q4’s ending balance
- Year column ≠ sum of quarters for these rows
This applies to: production budget, direct materials budget, cash budget, and merchandise purchases budget.
See also: Universal Inventory Formula — the same Begin + Add = Total − Subtract = End pattern.
Confusion Flag — POHR vs. Cash Disbursements: Depreciation Trap
What confused me: A question gave fixed MOH of 20,000 of depreciation” and asked for the POHR. I subtracted depreciation before computing the rate and got ~6.
Why I was wrong: POHR is a product costing rate — under absorption costing, depreciation IS a manufacturing cost that products must absorb. I was applying cash disbursement logic (subtract non-cash expenses) to a product costing calculation.
Context Include depreciation? Why POHR (product costing) ✅ Yes Products absorb all manufacturing costs including depreciation Cash disbursements for MOH (Schedule 5 bottom line) ❌ Subtract it Tracking cash out the door — depreciation is non-cash The trap: The textbook computes BOTH in the same schedule (Schedule 5). POHR at the very bottom, cash disbursements just above it. The depreciation mention in exam questions is a distractor — it’s testing whether you know which calculation needs it subtracted and which doesn’t.
Correct computation:
- Total MOH = Variable (50,000 × 4) = 200,000 = $600,000
- POHR = 6/MH**
- Do NOT subtract the $80,000 annual depreciation. That’s for cash disbursements only.
1. Why Budget? — Purpose, Process, and People
What is a budget?
A budget = a detailed, quantitative plan for the future
| Term | Definition |
|---|---|
| Budget | A detailed plan for the future, expressed in quantitative (usually financial) terms |
| Budgeting | The act of preparing a budget |
| Budgetary control | Using budgets to control a firm’s activities — comparing actual to plan |
| Master budget | The complete package summarizing all of a company’s plans — culminates in a cash budget, budgeted income statement, and budgeted balance sheet |
Two purposes of budgets: planning and control
Budgets serve both planning and control — not one or the other.
| Purpose | When | What it does | Specific uses |
|---|---|---|---|
| Planning | Before the period | Developing objectives and preparing budgets to achieve them | Think ahead, communicate goals, allocate resources, coordinate departments |
| Control | During/after the period | Gathering feedback on how well objectives are being met — comparing actual results to budget | Improve operations, evaluate and reward employees |
Planning asks "what should happen?" Control asks "did it happen, and if not, why?" Planning = building the map. Control = checking the map while you're driving.
Planning and control are not budget types
Planning and control = verbs (things you do with a budget). Static and flexible = adjectives (how the budget is structured). Any budget — static or flexible — can serve both purposes. Don’t conflate “planning budget” with “static budget” or “control budget” with “flexible budget.”
Kai
This ties directly back to the four management functions from Chapter 1 — planning, directing and motivating, controlling, and decision making. Budgets are the tool that connects planning to controlling. → What are the Four Management Functions
Budget period and continuous budgets
- Operating budgets typically cover one fiscal year, broken into quarters or months.
- A continuous (perpetual) budget rolls forward: as one month/quarter ends, another is added to always maintain a 12-month horizon.
Mental model: The continuous budget is a 12-month sliding window — you always have a one-year runway ahead of you.
Top-down vs. participative budgeting
| Approach | How it works | Risk |
|---|---|---|
| Top-down | Senior management sets profit targets; lower managers fill in the details | Demoralizing — ignores operational knowledge; targets may be unrealistic |
| Participative (bottom-up) | Lower-level managers develop estimates for their areas | Budgetary slack — managers pad revenue low / expenses high to look good |
Best practice: participative with review. Lower-level managers draft, upper management reviews. Neither pure top-down nor unreviewed bottom-up.
Budgetary slack = the gap between what a manager expects they can achieve and what they put in the budget. Revenue set too low, expenses set too high. Motive: easier targets → easier bonuses.
The Trap — Slack vs. Pushback
Slack requires intent to hide achievable performance. If a manager budgets 500K — that’s slack. If she budgets 600K and the market won’t support it — that’s not slack, that’s a planning problem with unrealistic top-down targets. On the exam, check: is the manager hiding capacity, or pushing back on an unachievable target?
Beyond the Textbook: Slack as Symptom, Not Just Problem
The textbook treats budgetary slack as a problem to eliminate. But organizational justice and goal-setting theory from OB suggest it can be a symptom to diagnose. When lower-level managers pad budgets, ask: is this gaming, or is this a signal that top-down targets are unrealistic? The diagnostic approach — treating slack as information rather than misbehaviour — connects to consulting frameworks like discovery interviews. Before prescribing a fix (tighter review, incentive redesign), diagnose the root cause.
Benchmarking
Comparing your budget targets against competitors, best-in-class companies, or other internal business units. Purpose: identify factors that allow superior performance and incorporate them.
Trap
Benchmarking can push targets too high if you anchor to an outlier. The textbook recommends budgeting targets that motivate progress toward leading competitors’ performance — not copying it wholesale.
Behavioural factors
What is responsibility accounting?
Responsibility accounting = managers are held responsible for only the revenues and cost items that they can actually influence to a significant extent.
Each line item in the budget is assigned to a specific manager. When actual results differ from budget, that manager explains the variance — but only for their items. The budget is the tool that implements responsibility accounting. Without a budget, there’s nothing to hold anyone responsible against.
| Concept | What it’s about |
|---|---|
| Responsibility accounting | What scope the manager is accountable for |
| Challenging but attainable | How difficult the target should be |
How difficult should targets be?
- Too hard (stretch) → people recognize it’s unattainable → give up → motivation drops
- Too easy → hit targets without effort → inefficiency → resources wasted
- Challenging but attainable → requires real effort but success is possible → motivation sustained. Can “usually be met by competent managers with reasonable effort.”
When bonuses depend on meeting budget → managers prefer challenging-but-attainable over stretch goals (obvious incentive).
Kai
This connects directly to goal-setting theory from OB (BUSM-2200) — Locke’s theory says specific, moderately difficult goals produce the highest performance. Same principle, different course.
Beyond the Textbook: Budgets and Organizational Justice
When companies use static-only comparisons and punish managers for volume-driven variances, they violate distributive justice (unfair outcomes relative to contributions) and procedural justice (flawed evaluation process). The flexible budget (LO3) fixes the process so the outcome is fair. Responsibility accounting is a procedural justice mechanism — it ensures the evaluation scope matches what the manager can actually control. → organizational justice
Key Vocabulary — Budgeting Fundamentals
Master Budget
Definition: The complete package summarizing all of a company’s plans — culminates in a cash budget, budgeted income statement, and budgeted balance sheet. Example: Patterson Framing’s master budget includes 10 schedules from sales through to the balance sheet. Trap: The master budget is a collection of schedules, not a single document. Connects to: What are the Four Management Functions
Budgetary Slack
Definition: The gap between what a manager expects they can achieve and what they put in the budget. Revenue set too low, expenses set too high. Example: Manager expects 400K to make the target easier to beat. Trap: Not all underbudgeting is slack — a manager setting realistic targets against unrealistic top-down demands is pushback, not slack. Slack requires intent to hide achievable performance. Connects to: organizational justice, goal-setting theory
Responsibility Accounting
Definition: Managers are held responsible for only the revenues and cost items they can actually influence to a significant extent. Example: A production manager is evaluated on the flexible budget variance (efficiency), not on volume differences caused by the sales team. Trap: Using a static budget to evaluate a manager violates responsibility accounting — it holds them accountable for volume changes they didn’t control. Connects to: organizational justice, Ceteris Paribus
Glossary — Budgeting Fundamentals
Budget — a detailed plan for the future, expressed in quantitative (usually financial) terms Budgeting — the act of preparing a budget Budgetary control — using budgets to control a firm’s activities by comparing actual to plan Participative budget — a budget where lower-level managers develop estimates for their areas of responsibility; risks budgetary slack without review Continuous (perpetual) budget — a 12-month rolling budget that adds a month/quarter as each one ends; maintains a constant one-year horizon
2. Building the Master Budget — The Schedule Chain
The big picture — 10 questions a master budget answers
- How much sales will we generate?
- How much cash will we collect from customers?
- How much raw material will we need to purchase?
- How much manufacturing cost will we incur (DM + DL + MOH)?
- How much cash will we pay to suppliers, labourers, and overhead?
- What total cost transfers from finished goods to COGS?
- How much selling & admin expense, and how much cash for it?
- How much will we borrow / repay, including interest?
- How much operating income?
- What will the balance sheet look like at period end?
The schedule chain
Every schedule feeds the next. The dependency chain is:
Sales Budget (Schedule 1)
├── Production Budget (Schedule 2)
│ ├── Direct Materials Purchases Budget (Schedule 3)
│ ├── Direct Labour Budget (Schedule 4)
│ └── Manufacturing Overhead Budget (Schedule 5)
│ └── Ending Finished Goods Inventory Budget (Schedule 6)
├── Selling & Administrative Expense Budget (Schedule 7)
└── Cash Budget (Schedule 8) ← pulls from ALL above
├── Budgeted Income Statement (Schedule 9)
└── Budgeted Balance Sheet (Schedule 10)
The sales budget is the root. If it's wrong, everything downstream is wrong.
The universal budget formula
Across production, materials, and merchandise budgets, the same structure repeats:
| Line | Production Budget | Direct Materials Budget | Merchandise Purchases Budget |
|---|---|---|---|
| Need | Budgeted sales (units) | Raw materials for production | Budgeted COGS |
| + Buffer | Desired ending FG inventory | Desired ending RM inventory | Desired ending merch inventory |
| = Total | Total needs | Total RM needs | Total needs |
| − On hand | Beginning FG inventory | Beginning RM inventory | Beginning merch inventory |
| = Action | Required production | Required purchases | Required purchases |
This is the Universal Inventory Formula wearing budget clothes: Begin + Acquisitions = End + Usage. Rearranged: Acquisitions = Usage + End − Begin.
Kai
I noticed this pattern across schedules 2 and 3 in the textbook. The formula is always: what you need to do = what you need to have − what you already have. Memorize the abstract pattern, then slot in the specific terms per budget type.
Which schedules use the universal formula?
The universal formula only applies to things you can put on a shelf. If it's inventoriable, you need the beginning/ending adjustment. If it's consumed when performed or expensed in the period, you just calculate what you need.
| Schedule | Uses Universal Formula? | Why |
|---|---|---|
| Schedule 2: Production | ✅ Yes | Finished goods can be inventoried |
| Schedule 3: Direct Materials | ✅ Yes | Raw materials can be inventoried |
| Schedule 4: Direct Labour | ❌ No | Can’t store labour — consumed in the period |
| Schedule 5: MOH | ❌ No | Applied as a rate, not inventoried separately |
| Schedule 7: Selling & Admin | ❌ No | Period costs — never inventoried |
How does the sales budget produce three outputs?
The sales budget feeds three different downstream schedules — not just one.
| Output | Feeds | Timing |
|---|---|---|
| Revenue (accrual) | Budgeted income statement (Schedule 9) | Recognized when earned |
| Cash collections | Cash budget (Schedule 8) | When customers actually pay |
| AR balance | Budgeted balance sheet (Schedule 10) | Uncollected portion of Q4 sales |
Revenue recognition vs. matching principle
Revenue recognition = when to record revenue (when earned, regardless of cash). Matching principle = when to record expenses (match to the revenue they helped generate). Both are accrual concepts but they answer different questions. Cash collections follow neither — they track when money hits the bank.
Schedule 1: Sales Budget
The sales budget answers: How much will we sell, and when will we collect cash?
Two outputs:
- Budgeted sales in units and dollars (by quarter)
- Schedule of expected cash collections (based on collection pattern — e.g., 60% collected in quarter of sale, 40% next quarter)
The cash timing pattern is symmetrical. Collections (customer side): this quarter's sales collected + last quarter's uncollected. Disbursements (supplier side): this quarter's purchases paid + last quarter's unpaid. Every quarter's cash flow depends on two periods of activity.
The cash collections schedule feeds directly into the Cash Budget. Watch for: the opening accounts receivable from last year's Q4 sales that haven't been collected yet.
Schedule 2: Production Budget
The production budget answers: How many units must we produce?
| Line | Formula |
|---|---|
| Budgeted sales (units) | from Schedule 1 |
| + Desired ending inventory | % of next quarter’s sales |
| = Total needs | |
| − Beginning inventory | = prior quarter’s ending inventory |
| = Required production |
Key assumptions:
- Ending inventory is set as a % of next quarter’s sales (e.g., 10%)
- Q1’s beginning inventory = prior year’s ending inventory (from balance sheet)
Year column trap
The “Year” total for beginning inventory = Q1’s beginning inventory only (not the sum of four quarters). The year’s ending inventory = Q4’s ending inventory only. Required production for the year IS the sum of the four quarters.
Manufacturing vs. merchandising: A merchandising firm replaces “required production” with “required purchases” and uses COGS instead of unit sales. Service firms need neither.
Schedule 3: Direct Materials Purchases Budget
Answers: How much raw material do we buy, and when do we pay for it?
Same universal formula, now applied to raw materials:
| Line | Formula |
|---|---|
| Raw materials needed for production | Production (Sch 2) × material per unit |
| + Desired ending RM inventory | % of next quarter’s production needs |
| = Total RM needs | |
| − Beginning RM inventory | = prior quarter’s ending RM inventory |
| = Raw materials to purchase | in units, then × cost per unit = $ |
Kai
The 10% ending inventory buffer keeps showing up. It’s not a magic number — it’s a management policy decision about how much safety stock to carry. Different companies pick different percentages based on supply chain reliability. In the textbook problems, this % is always given.
Accompanied by a schedule of expected cash disbursements for raw materials (e.g., 70% paid in quarter of purchase, 30% next quarter).
Year column trap (same rule again)
Year’s ending RM inventory = Q4’s ending RM inventory. Year’s beginning RM inventory = Q1’s beginning RM inventory. Same relay-race logic.
Schedule 4: Direct Labour Budget
Answers: How many labour-hours do we need, and what will it cost?
| Line | Computation |
|---|---|
| Units to produce | from Schedule 2 |
| × DL hours per unit | given |
| = Total DL hours needed | |
| × DL cost per hour | given |
| = Total DL cost |
Kai
If a company guarantees minimum hours (union contract or policy), the minimum cost floor = workers × guaranteed hours × rate. Compare this to the computed DL cost — use whichever is higher. This creates idle capacity cost in low-production quarters.
Schedule 5: Manufacturing Overhead Budget
Answers: What’s our total MOH, and what’s the POHR for the year?
| Component | How computed |
|---|---|
| Variable MOH | DL hours (Sch 4) × variable rate per DL hour |
| Fixed MOH | Given per quarter (includes depreciation) |
| Total MOH | Variable + Fixed |
| Cash disbursements | Total MOH − depreciation (non-cash) |
| POHR for year | Total annual MOH ÷ Total annual DL hours |
Kai
“Non-cash overhead” just means depreciation. It’s a real cost on the income statement, but no cash leaves the building. That’s why we subtract it to get cash disbursements. Same logic applies in Schedule 7 for depreciation, insurance, and property taxes.
Schedule 6: Ending Finished Goods Inventory Budget
Answers: What’s the per-unit product cost, and what’s the ending FG inventory value on the balance sheet?
Uses absorption costing (DM + DL + MOH per unit):
| Cost component | Computation |
|---|---|
| DM per unit | material qty × cost per unit |
| DL per unit | DL hours × rate per hour |
| MOH per unit | DL hours × POHR |
| Unit product cost | Sum of above |
| Ending FG inventory $ | Ending units (Sch 2) × unit product cost |
Schedule 7: Selling & Administrative Expense Budget
Answers: What are our non-manufacturing expenses, and what cash goes out?
| Component | How computed |
|---|---|
| Variable S&A | Units sold (Sch 1) × variable S&A per unit |
| Fixed S&A | Given (advertising, salaries, insurance, property tax, depreciation) |
| Total S&A expense | Variable + Fixed |
| Cash disbursements | Total − non-cash items (depreciation) − accrued items (insurance, property tax) + actual cash payments for those items when they occur |
Accrual ≠ Cash
Insurance and property taxes are expensed evenly across quarters (accrual), but paid in lump sums in specific quarters (cash). The cash disbursement schedule must subtract the quarterly accrued expense and add back the actual payment in the quarter it happens.
Schedule 8: The Cash Budget
Kai
Exam confirmed: The professor said we will write this by hand.
Answers: Will we have enough cash? When do we need to borrow?
Four sections:
| Section | Contains |
|---|---|
| Receipts | Cash collections from customers (Sch 1) |
| Disbursements | Materials (Sch 3) + DL (Sch 4) + MOH cash (Sch 5) + S&A cash (Sch 7) + equipment purchases + dividends |
| Cash excess/deficiency | Beginning cash + receipts − disbursements |
| Financing | Borrowings, repayments, interest |
The borrowing formula (when cash is below minimum):
Where = amount borrowed, = quarterly interest rate.
Solving:
Interest stacking
In later quarters, interest on prior outstanding loans must also be paid. The formula becomes:
Cash budget financing decision tree
Process each quarter left to right, in order. Q1’s borrowing affects Q2’s interest.
Step 1: COMPARE
Excess (shortage) vs. Minimum cash balance
Is excess ≥ minimum?
├── YES → Step 2A (surplus — can I repay?)
└── NO → Step 2B (shortage — how much to borrow?)
Step 2A: SURPLUS — Do I owe anything from prior borrowing?
├── NO → Done. Ending cash = excess.
└── YES → Available for repayment = excess − minimum
Can I cover principal + interest and stay ≥ minimum?
├── YES → Repay. Ending cash = excess − principal − interest
└── NO → Pay interest (mandatory) + partial principal
Step 2B: SHORTAGE — How much do I borrow?
Shortfall = minimum − excess + interest owed on existing loans
Round UP to nearest required increment (if applicable)
Ending cash = excess + borrowing − interest
Interest is mandatory. Principal repayment is optional. The bank charges interest whether or not you can repay. When cash is tight, you pay interest and carry the loan. Repayment only happens when you have surplus above the minimum.
The Trap — Each Loan Tracks Separately
When repaying, calculate interest for each borrowing event based on how long it was held. A Q1 loan held to Q3 accrues 6 months of interest. A Q2 loan held to Q3 accrues only 3 months. You cannot average them.
Loan 1: $20,000 × 12% × 6/12 = $1,200 Loan 2: $10,000 × 12% × 3/12 = $300 Total interest: $1,500
Cash budget = flow document, not stock document
The cash budget shows this period’s borrowings, repayments, and interest. Total outstanding debt lives on the balance sheet (Schedule 10). Don’t look for cumulative loan balances on the cash budget — each quarter only shows its own activity.
Minimum cash balance — a management policy decision (given in the problem). The lowest amount of cash the company will allow at the end of any period. This is NOT calculated — it’s a constraint that drives all borrowing and repayment decisions.
Year column trap (same rule)
Beginning cash for the year = Q1’s beginning cash. Ending cash for the year = Q4’s ending cash.
Schedules 9 & 10: Budgeted Income Statement and Balance Sheet
Budgeted Income Statement — pulls from all prior schedules:
- Sales (Sch 1) − COGS (units sold × unit cost from Sch 6) = Gross margin
- − S&A expenses (Sch 7) = Operating income
- − Taxes − Interest (Sch 8) = Net income
Budgeted Balance Sheet — updates the prior year’s balance sheet:
- Cash from Sch 8, A/R from uncollected sales, inventories from Sch 3 and 6
- A/P from unpaid materials purchases
- Retained earnings = prior RE + net income − dividends
Glossary — Master Budget
Schedule — a structured worksheet completed in a specific order; each schedule feeds the next in the master budget chain Minimum cash balance — a management policy decision setting the floor for ending cash in any period; drives all borrowing and repayment decisions; given in the problem, not calculated Cash collections schedule — subsidiary schedule under the sales budget showing when revenue converts to cash based on collection patterns Cash disbursements schedule — subsidiary schedule under materials (or S&A) budget showing when purchases convert to cash outflows based on payment patterns
Beyond the Textbook: Treasury Management and Minimum Cash Balance
The textbook treats the minimum cash balance as a given. In practice, companies use models like the Miller-Orr model to set optimal cash boundaries, weighing the opportunity cost of idle cash against liquidity risk. Too much cash sitting idle = lost investment returns. Too little = scrambling for emergency financing at bad rates. Connects to corporate finance, not managerial accounting.
Beyond the Textbook: Ceteris Paribus as a Diagnostic Framework
The flexible budget is one instance of a universal analytical pattern: choosing what to hold constant determines what question you’re answering. Hold costs constant, vary volume → learn about volume effects. Hold volume constant, vary costs → learn about efficiency. This same logic drives A/B testing (hold everything constant except one variable), sensitivity analysis (what happens if this assumption changes?), and experimental design. Building custom analytical comparisons by selecting which variable to isolate is a core consulting and management skill. → Ceteris Paribus
3. When Plans Meet Reality — Flexible Budgets and Performance Evaluation
What is a flexible budget?
A flexible budget recalculates budgeted amounts at the actual level of activity, using budgeted rates. It answers: "Given the volume we actually hit, what should costs have been?"
This is Ceteris Paribus in action — hold cost rates constant, change only volume. The flexible budget sits between the static budget and actual results as a translation layer.
| Column | Volume | Rates/Costs | Purpose |
|---|---|---|---|
| Static Budget | Budgeted | Budgeted | What we planned |
| Flexible Budget | Actual | Budgeted | What costs should have been at actual volume |
| Actual Results | Actual | Actual | What actually happened |
The Trap — Don't Flip the Switches
The flexible budget uses actual volume, budgeted costs. NOT budgeted volume with actual costs — that would answer a hypothetical question about a volume level that never occurred. If it used actual costs too, it would just be the actual results. If it used budgeted volume, it would just be the static budget. It must sit in the middle with one from each side.
Why we need flexible budgets
Without the flexible budget, you can only compare static to actual. If costs are higher, a manager can wave their hands at volume: “We made more stuff — of course costs are higher.” That’s partially valid. But how much of the increase is legitimate volume, and how much is cost inefficiency?
The flexible budget splits the total variance into two pieces:
- Static → Flexible gap: pure volume effect (nobody’s fault)
- Flexible → Actual gap: pure cost/efficiency effect (manager’s responsibility)
The flexible budget equalizes volume between itself and actual results. Since both use the same volume, any difference between them cannot be blamed on volume. That's what makes the comparison fair.
How do fixed costs behave in the flexible budget?
Fixed costs are the same across all three columns — 200,000 in flexible, $200,000 in actual (unless actual fixed costs differed, which would be a spending issue, not volume).
The flexible budget only adjusts variable costs for volume. Fixed costs stay put by definition. If you adjust fixed costs for volume, you've misunderstood what "fixed" means.
Confusion Flag — Operating Leverage: "Sales" ≠ "Revenue" in Variance Questions
What confused me: A question asked which scenario demonstrates the “leverage effect on net operating income due to fixed costs.” I was drawn to revenue-related answers because I read “sales” as “revenue.”
The concept: Operating leverage means fixed costs act as an amplifier — a % change in sales volume produces a bigger % change in net operating income. Fixed costs don’t move, so every extra dollar of contribution margin from higher volume drops straight to NOI.
How to spot it: Sales % change is SMALLER than NOI % change, in the SAME direction.
Scenario Leverage? Why 25% ↑ sales → 30% ↑ NOI ✅ Yes NOI amplified beyond sales change — fixed costs absorbed nothing extra 25% ↑ sales → 30% ↓ NOI ❌ Opposite directions — not leverage, something else broke 15% ↑ sales → 15% ↑ COGS ❌ Proportional — that’s just variable cost behavior 25% ↑ sales → 30% ↑ fixed costs ❌ Fixed costs don’t increase with sales — that’s what makes them fixed
From flexible budget to performance evaluation
The flexible budget answers “what should costs have been?” Now the next question: how do we use that to evaluate managers? The answer is the performance report — which splits the total variance into two named pieces.
What are the two variances in a flexible budget performance report?
The three-column comparison produces two named variances:
| Variance | Between | What it measures | Who’s responsible? |
|---|---|---|---|
| Activity Variance | Static Budget ↔ Flexible Budget | Effect of operating at a different volume than planned | Generally not the manager’s fault — market-driven |
| Spending Variance | Flexible Budget ↔ Actual Results | At actual volume, did we spend more or less than expected? | The manager’s responsibility |
Static Budget Flexible Budget Actual Results
(planned volume) (actual volume) (actual volume)
| | |
|←— Activity variance →|←— Spending variance —→|
(volume difference) (efficiency/price diff)
How are variances labelled?
Each variance is Favourable (F) or Unfavourable (U):
- Favourable: Actual cost < Budget, OR actual revenue > budget
- Unfavourable: Actual cost > Budget, OR actual revenue < budget
Favourable ≠ Good
A favourable materials variance might mean you bought cheaper materials that cause quality problems. The label just means “better than budget” — whether that’s actually good requires investigation.
F/U labelling rule for costs: Did the number move in a direction that helps or hurts net income? Higher costs hurt = U. Lower costs help = F. Higher revenue helps = F. This applies to each line item independently — don't think about whether the underlying cause is "good news."
What is the static budget variance?
The static budget variance is the total difference between the static budget and actual results — before any flexible budget analysis. It's the raw gap.
This is the number a CEO sees when they compare plan to actual. It tells you that something is off, but not why.
The flexible budget splits it:
Activity variance + Spending variance = Static budget variance (total)
The Trap — Variances Can Offset
The activity variance and spending variance can go in opposite directions. If volume pushed costs up by 15,000 F through efficiency, the total static budget variance is only 50,000 over budget.”
The formula: Activity variance + Spending variance = Total variance. If you know two of three, solve for the third. Treat U as positive, F as negative (for costs).
How do revenue variances work?
Revenue follows the same three-column pattern but the F/U labels flip:
| Line Item | Higher than budget | Lower than budget |
|---|---|---|
| Costs | U (hurts income) | F (helps income) |
| Revenue | F (helps income) | U (hurts income) |
On a full performance report, each line gets its own activity and spending variance. Revenue and costs can have opposite F/U labels for the same variance type — that’s normal, not an error.
Confusion Flag — Activity Variance vs. Revenue/Spending Variance
What confused me: A question described a $5,000 unfavorable variance from comparing the flexible budget (9,000 units) to the planning budget (10,000 units). I picked “revenue variance” because “sales” made me think “revenue.” The correct answer was activity variance.
The fix: Don’t look at what line item is varying. Look at which two budgets are being compared.
Planning Budget Flexible Budget Actual Results (planned volume) (actual volume) (actual volume) | | | |←— Activity variance —→|←— Spending variance —→| (volume difference) (efficiency/price diff)
Comparing… Variance type What it isolates Planning budget ↔ Flexible budget Activity variance Pure volume effect — did we sell more/fewer units than planned? Flexible budget ↔ Actual results Spending variance At actual volume, were we efficient? Were prices as expected? Exam heuristic: If the two numbers being compared have different unit volumes, it’s activity. If they have the same unit volume but different dollar amounts, it’s spending.
Key Vocabulary — Flexible Budgets and Variance Analysis
Flexible Budget
Definition: A budget that recalculates expected costs at the actual activity level achieved, using budgeted cost rates. Sits between the static budget and actual results. Example: Static budget: 50,000 units × 400,000. Flexible budget: 60,000 actual units × 480,000. Actual: 60,000 units × 510,000. Trap: Uses actual VOLUME but budgeted COSTS. Not the reverse. Not both actual. Connects to: Ceteris Paribus, organizational justice, Responsibility Accounting
Static Budget
Definition: A budget prepared for a single planned level of activity. Does not adjust when actual volume differs. Example: Budgeted 50,000 units at 400,000. Actual was 60,000 units but the static budget still says $400,000. Trap: Comparing actual results to a static budget penalizes managers for volume changes they didn’t control — violates responsibility accounting. Connects to: Flexible Budget, organizational justice
Activity Variance
Definition: The difference between the static budget and the flexible budget. Measures the pure effect of operating at a different volume than planned. Example: Static budget costs 480,000 (60,000 units). Activity variance = $80,000 U. Trap: For costs, higher volume = higher costs = U. But higher volume is usually good news for the business. The U label describes the cost direction, not whether the cause is good or bad. Connects to: Flexible Budget, Responsibility Accounting
Spending Variance
Definition: The difference between the flexible budget and actual results. Measures cost efficiency at the actual volume achieved. Example: Flexible budget 510,000. Spending variance = 30,000 at the volume they operated at. Trap: This is the variance the manager is responsible for. It cannot be blamed on volume because both columns use actual volume. Connects to: Flexible Budget, Responsibility Accounting, Ceteris Paribus
Static Budget Variance
Definition: The total difference between the static budget and actual results — before any flexible budget analysis. The raw gap. Example: Static 450,000 = $50,000 U total variance. Splits into activity variance + spending variance. Trap: This number alone is useless for management action. It mixes volume and efficiency effects. Always split it using the flexible budget. Connects to: Activity Variance, Spending Variance
LO5 (Appendix 9A: EOQ / Optimal Inventory) — Skipped. Not covered in class; not exam-relevant. Return to self-study if needed later.
Key Formulas to Memorize
Universal budget formula: Required action = What you need + Desired ending − Beginning on hand
Production budget: Required production = Budgeted sales + Desired ending FG inventory − Beginning FG inventory
Direct materials: Required purchases = Production needs + Desired ending RM inventory − Beginning RM inventory
Cash budget borrowing:
POHR: POHR = Total budgeted MOH ÷ Total budgeted DL hours
Unit product cost (absorption): DM + DL + MOH per unit
Variance relationship: Activity variance + Spending variance = Static budget variance (total) (U = positive for costs, F = negative for costs. Solve for the missing one.)