What Is a Budget in Accounting?

Definition, types of budgets, and how budgets are compared with actual results.

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Quick answerA budget is a financial plan that estimates a business’s income and expenses for a future period. It guides spending decisions and is later compared with actual results.
Common typesSales, production, cash and master budgets
Used forPlanning, control and performance review
TopicManagement accounting · Planning

Budget in plain English

A budget is a plan expressed in numbers. It sets targets (for example monthly sales), limits (for example spending), and gives managers a yardstick to judge whether the business is on track.

Worked example

BudgetActualVariance
Sales10,0009,0001,000 adverse
Expenses7,5007,800300 adverse
Profit2,5001,2001,300 adverse

Comparing the two shows that lower sales and higher expenses both reduced profit. This comparison is variance analysis.

Common mistakes
  • Setting a budget once and never reviewing it.
  • Using unrealistic targets, which people then ignore.

Frequently asked questions

What are the main types of budgets?

Sales, production, purchases, cash and capital budgets, which combine into a master budget.

What is the difference between a budget and a forecast?

A budget is a target plan. A forecast is a prediction of what is likely to happen and is updated more often.

Why do businesses prepare budgets?

To plan resources, control costs, coordinate departments and measure performance.

Keep learning

This page is for general learning. Accounting rules vary by country and standard.