Management Accounting · Nature and purpose of budgeting

Budgets, Planning, Control and Responsibility Centres

Updated 11 October 2026 · Fact-checked

A budget turns a long-term strategy into a short-term financial plan, then acts as a yardstick for control. Feedback control compares actual results with budget after the event. Feedforward control uses forecasts to act before problems occur. Managers should be judged only on costs and items they control.

Understand Budgets, Planning, Control and Responsibility Centres

A budget is a quantified plan for a future period, usually a year. It turns the organisation's goals into numbers and gives each manager a target.

Plans work at three levels. Strategic plans are long-term and set by senior management, such as entering a new market. Tactical plans cover the medium term and decide how resources are used to deliver the strategy. Operational plans are short-term and day-to-day, such as this month's production schedule. The annual budget sits mainly at the tactical and operational levels. It should flow from the strategy and not be set in isolation.

Budgets also support control. In feedback control, you compare actual results with budget after the period, find variances and take corrective action. It looks backwards, so it reacts to problems that have already happened. In feedforward control, you compare the budget with forecast results before the period ends. If the forecast shows a shortfall, you act early. A cash forecast that shows an overdraft next quarter, followed by action now, is feedforward.

Budgets work best when each manager is accountable for a responsibility centre. A cost centre is responsible for costs only. A revenue centre is responsible for revenue only. A profit centre is responsible for both costs and revenues. An investment centre is responsible for profit and also for the capital invested, so it is judged against assets used, for example with ROI.

The key control idea is controllability. A controllable cost is one a manager can influence in the period. An uncontrollable cost is one the manager cannot influence, such as a head office allocation. Holding managers to account for uncontrollable costs demotivates them. Reports should separate the two.

Key formulas to remember

Variance: Variance = Actual − Budget (or Budget − Actual, depending on convention); Label each variance as favourable (F) or adverse (A). A cost below budget is favourable. Revenue above budget is favourable.
Feedback control: Actual results vs budget, after the event, then corrective action; Backward-looking. Based on variances.
Feedforward control: Forecast results vs budget, before the event, then preventive action; Forward-looking. Based on forecasts.
Responsibility centre scope: Cost centre: costs. Revenue centre: revenue. Profit centre: costs and revenue. Investment centre: profit and capital invested; Match the manager's authority to what they are judged on.
Controllable cost test: Controllable if the manager can influence it in the period; otherwise uncontrollable; Controllability depends on the manager and the time frame. A cost can be controllable for one manager and not for another.

How to solve Budgets, Planning, Control and Responsibility Centres questions

Most objective test questions on this topic ask you to classify something or choose the correct term. Use this method.

1Read the scenario and note the time frame: long-term, medium-term or short-term. This points to strategic, tactical or operational.
2Ask when the comparison happens. After the period using actuals means feedback. Before the period ends using forecasts means feedforward.
3For a responsibility centre, list what the manager controls: costs only, revenue only, costs and revenue, or also investment decisions.
4For each cost, ask whether this manager can influence it in the period. If not, it is uncontrollable for them.
5Check any numbers. Compute variances as actual against budget and label F or A.
6Match your answer to the exact wording of the options and eliminate those that fail on the clues you found.

Quickest way: Clue-word classification

When to use it: Use this for multiple choice questions on control type or responsibility centre type when time is short.

Look for clue words. Forecast, expected or anticipated points to feedforward. Actual, variance or after the period points to feedback.
Look for authority words. Only costs means cost centre. Costs and sales means profit centre. Capital employed or asset decisions means investment centre.
Years ahead means strategic. Next year's resource use means tactical. This week or month means operational.
Pick the option that fits all clues and ignore partly right options.

Common mistakes in Budgets, Planning, Control and Responsibility Centres

Calling any budget comparison feedforward.
Students see 'budget' and think of planning ahead.
Fix: Check the timing. Actual against budget after the event is feedback. Only forecast against budget before the event is feedforward.
Treating a profit centre as an investment centre.
Both are judged on profit, so they look alike.
Fix: An investment centre manager also controls capital investment and is judged on profit relative to capital employed.
Holding a manager responsible for allocated head office costs.
The costs appear in the centre's report, so they seem relevant.
Fix: Treat costs the manager cannot influence as uncontrollable. Report them separately or exclude them from performance judgement.
Saying controllability is fixed for a cost.
Students memorise fixed costs as uncontrollable and variable costs as controllable.
Fix: Controllability depends on who the manager is and the time frame. A senior manager may control a cost a junior cannot.
Placing the annual budget at the strategic level.
Budgets feel important, so students assume top-level planning.
Fix: Strategy is long-term. The annual budget is a short-term plan that helps carry out the strategy, mainly tactical and operational.
Getting the sign of variances wrong.
Students subtract in the same order for costs and revenues.
Fix: Ask whether profit is better or worse than budget. Higher profit is favourable, lower is adverse.

Worked examples

Example 1

A manager of a regional depot receives a monthly report. It shows actual costs against budget, and the manager then investigates the overspend in fuel. Which type of control is this, and what is it based on?

Show the solution

The report shows actual costs against budget.
The comparison takes place after the period has ended.
Action follows the variance, so it is a reaction to a past event.
This matches the definition of feedback control.

Answer: Feedback control, based on variances between actual results and budget after the event.

Example 2

A division's budgeted sales are $400,000 and budgeted costs are $310,000. Actual sales are $420,000 and actual costs are $335,000. The manager controls selling prices, costs and the purchase of new equipment. Which responsibility centre is it, and what is the profit variance?

Show the solution

The manager controls revenue, costs and capital investment decisions, so this is an investment centre.
Budgeted profit = $400,000 − $310,000 = $90,000.
Actual profit = $420,000 − $335,000 = $85,000.
Profit variance = $85,000 − $90,000 = $5,000 below budget, so adverse.
As an investment centre, profit should also be judged against capital employed, for example by ROI.

Answer: Investment centre. The profit variance is $5,000 adverse.

Exam tips

Link the answer to timing. Most feedback versus feedforward questions are solved by asking whether actuals or forecasts are used.
Read what the manager controls, not just the centre's name. The scenario's authority clues decide the centre type.
In multiple response questions, select exactly the stated number of options and check each against controllability.
For number entry, compute actual minus budget for profit, and state F or A if the question asks for it.
Remember that budgets support planning, coordination, communication, motivation and control. Questions may ask you to pick the purpose that fits a scenario.

Practice questions from Nature and purpose of budgeting

Budgets, Planning, Control and Responsibility Centres: frequently asked questions

What is the difference between feedback and feedforward control?

Feedback control compares actual results with the budget after the event and corrects problems that have already happened. Feedforward control compares forecast results with the budget before the event and takes action early. Feedforward is proactive, feedback is reactive.

What is the difference between a profit centre and an investment centre?

A profit centre manager controls costs and revenues. An investment centre manager also controls the capital invested in the centre. Investment centres are therefore judged on profit relative to capital employed, not on profit alone.

What is a controllable cost?

A controllable cost is one that a particular manager can influence within the period being reviewed. Costs the manager cannot influence, such as allocated head office charges, are uncontrollable for that manager. Performance reports should separate the two.

How do budgets link to strategic planning?

Strategic plans set long-term goals. The budget turns part of the strategy into a detailed one-year plan with targets for each manager. This links day-to-day decisions to the organisation's long-term direction.