Revision and practice on why businesses budget, how operational budgets are built, and how variance analysis is used to check performance against them.
A budget is a financial plan that forecasts revenues and costs over a future period. Budgets help coordinate activities, set targets for managers, and provide a benchmark for measuring performance.
Key purposes of budgeting:
Planning: budgets force managers to think ahead about what they will do and what resources they need.
Coordination: different departments prepare budgets that are coordinated to keep the overall business plan consistent.
Motivation: budgets set targets that can motivate managers and staff to perform well and control costs.
Control: comparing actual results to budgeted figures lets managers identify problems early and take corrective action.
Preparing Operational Budgets
Operational budgets forecast revenues and costs for a future period — typically one year, broken down by quarter or month — and form the backbone of financial planning in a business.
Revenue budgets forecast sales in units and pounds, typically based on market research, past sales trends and pricing plans.
Cost budgets forecast raw materials, labour, energy, rent and other operational costs, based on production plans and historical data.
Budgets are often prepared by department, product or business unit, then consolidated into a master budget for the whole business, including a budgeted income statement.
Contingency budgets may be prepared for different scenarios — best case, worst case and most likely case.
Variance Analysis
Once a budgeted period is complete, a business can compare its actual figures against the budget. The difference between the two is called a variance.
Favourable variance: actual figures were better than expected in relation to profit — e.g. revenue £10,000 above budget, or materials costing £5,000 less than budgeted.
Adverse variance: actual figures were worse than expected in relation to profit — e.g. revenue £15,000 below budget, or labour costs £8,000 higher than budgeted.
Managers investigate significant variances to understand their cause — has the market changed, were there supply chain problems, did productivity fall? Once the cause is understood, corrective action can be taken: adjusting pricing, improving efficiency, negotiating better supplier contracts, or revising future budgets.
Real-World Case Studies
Rolls-Royce — a run of favourable variances against its own guidance
Rolls-Royce has repeatedly beaten its own profit guidance in recent years. Its 2024 operating profit of £2.5 billion came in 8% ahead of expectations, and it went on to raise its full-year 2025 guidance mid-year to £3.1-3.2 billion — before actually reporting full-year 2025 underlying operating profit of £3.5 billion, beating even that upgraded figure. Each of these beats is a favourable variance: actual profit turning out better than the figure the business itself had budgeted and told investors to expect, driven by factors like improved operating margins.
Source: verified via search, September 2026 — Rolls-Royce's own Full Year Results announcements and Investing.com/CNBC coverage of its 2024-2025 guidance upgrades.
UK profit warnings — when a business signals an adverse variance is coming
A "profit warning" is essentially a business telling investors in advance that its actual results will be an adverse variance against what the market expects. EY's tracking of UK-listed companies found profit warnings running at a high rate through 2025 and into 2026, with nearly half of warnings in early 2026 citing policy change and geopolitical uncertainty as a leading cause, and retailers particularly affected — more than a third of FTSE-listed retailers issued a profit warning during 2025. This shows how external factors outside a business's control, not just internal errors, can drive a variance between budget and actual results.
Source: verified via search, September 2026 — EY-Parthenon's quarterly UK Profit Warnings analysis.
Quick Quiz
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1. A business budgets for costs of £40,000 but actual costs come in at £35,000. Is this variance favourable or adverse?
2. A business budgets for £200,000 in sales but only achieves £170,000. Is this variance favourable or adverse?
3. Which of these is NOT one of the four main purposes of budgeting covered in this lesson?
4. What is a "master budget"?
5. Why might a manager investigate a significant variance rather than just noting it?
Score: 0 / 0
Quick Knowledge Check
Short, snappy recall questions — tap to reveal the answer.
What is a budget? (1 mark)
A financial plan that forecasts revenues and costs over a future period.
What is a favourable variance? (1 mark)
Actual figures were better than budgeted, in relation to profit.
What is an adverse variance? (1 mark)
Actual figures were worse than budgeted, in relation to profit.
Key Term Flashcards
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Budget
A financial plan that forecasts revenues and costs over a future period.
Variance
The difference between a budgeted (forecast) figure and the actual figure achieved.
Favourable variance
A variance where actual figures were better than budgeted in relation to profit.
Adverse variance
A variance where actual figures were worse than budgeted in relation to profit.
Master budget
Individual department, product or business-unit budgets consolidated into one overall budget for the business.
A*/A Stretch
Examiner's eye
Don't assume "favourable" always means good news for the business overall — a favourable cost variance from cutting a training budget, for example, could damage staff skills and performance longer-term, even though it looks good on this period's numbers. Strong exam answers acknowledge this kind of trade-off.
Synoptic link
Connecting to financial objectives (L1, this unit): Budgets are one of the main tools a business uses to work towards its financial objectives day-to-day — a business with a profit objective will build a budget designed to hit a specific profit figure, then use variance analysis throughout the year to check it's on track.
Try This With AI
Before using this: AI tools can get facts or mark scheme details wrong, and quality varies by tool. Always check anything factual against your notes or ask your teacher.
Give me a short table of budgeted vs actual figures (sales, costs, profit) for a fictional business. Ask me to calculate each variance and state whether it's favourable or adverse. Then mark my answers and ask me to suggest one possible cause and one corrective action for the most significant variance.