Definition
A budget is a plan defining expected income, expenditure and financial-resource requirements for a specified period or a particular project.
Human Explanation
It shows how much money will be needed and how it is intended to be used.
Why it Matters
It supports cost control, funding planning and assessment of whether an undertaking is feasible.
Conceptual Boundary
A budget does not guarantee actual costs. It is a plan based on the assumptions and data available at the time.
Practical Perspective
A sound budget should include a risk reserve, an expenditure schedule and allowance for changes during project delivery.