3.9 Budgets

A cost centre is a department or unit judged mainly by the costs it controls. A profit centre is judged by both the revenue it generates and the costs it incurs, so its performance can be compared through profit.

The distinction gives managers a clearer budget and a defined area of responsibility. It can speed local decisions and reveal which units need support, but costs shared across products or locations may be difficult to allocate fairly. A manager should not be blamed for a cost they cannot influence.

For example, a retailer can treat each store as a profit centre while head-office IT and human resources operate as cost centres. Store managers can respond to local demand, while the centre manager monitors whether a sales gain came from genuine performance or simply higher spending.

A profit centre is not automatically a separate business and a cost centre is not ‘unproductive’. Both are control units; the useful question is whether the chosen measures match the manager’s actual decision rights and the organisation’s objectives.

A budget is a financial plan for a stated period. It converts expected activity into planned revenue, costs, staffing, output or marketing spending, then gives managers a reference point for monitoring performance.

Historical budgeting starts with past figures and adjusts for expected changes such as inflation, demand or exchange rates. Zero-based budgeting starts each spending item at zero and requires evidence for every request; it can challenge waste but takes more time and skill.

Departmental budgets are combined into a master budget. A sales forecast may drive production, staffing and marketing plans, so the numbers should be coordinated rather than prepared as isolated targets. Negotiation and available finance also shape the final allocation.

A budget is not a prediction that must be obeyed regardless of context. It is an agreed plan and control baseline; weak data, biased assumptions or a sudden market change can make a technically precise budget poor guidance.

A budget variance is the difference between an actual result and the budgeted result. For revenue or profit, a higher actual figure is favourable; for costs, a lower actual figure is favourable. The same arithmetic sign can therefore mean different things.

Suppose planned revenue is £120,000 and planned costs £80,000, but actual revenue is £135,000 and actual costs £101,000. Budgeted profit is £40,000; actual profit is £34,000, so the profit variance is £6,000 adverse. Higher sales did not prevent a weaker final result because costs rose more.

Investigate the mechanism before acting: a cost variance may reflect waste, an input-price shock or a deliberate quality improvement. An adverse sales variance may point to demand, pricing or promotion, while a favourable cost variance deserves a quality check rather than automatic praise.

‘Favourable’ does not mean ‘good in every respect’, and ‘adverse’ does not prove poor management. Variance analysis identifies a signal; the decision comes from its cause, materiality, trend and effect on the wider objective.

Managers use budgets to allocate scarce resources, set targets and compare actual performance with an agreed plan. Variance analysis then shows where attention, training, reprioritisation or additional investment may be needed.

A department that repeatedly overspends may need a supplier review or process change; one that underspends may have spare capacity—or may be cutting maintenance and damaging quality. Decisions should connect the financial signal to operations, customers and strategy.

Budgets also coordinate departments: a marketing campaign can increase the sales budget while requiring extra production, staffing and working-capital finance. If demand changes suddenly, managers may need to revise the plan instead of protecting an obsolete target.

A budget is not a neutral measure of managerial worth. Targets can motivate, but unrealistic or short-term targets encourage gaming, rivalry or under-investment. Use the budget as evidence alongside context, non-financial indicators and the business’s longer-term aim.