A budget is a financial plan that outlines the expected income and expenses for a specific period, usually one year. It helps individuals and organizations manage their finances by allocating funds for various expenses. Individuals can spend the budgeted amount on their personal expenses, while organizations allocate the budget to different departments or functions. Therefore, a budget is typically written for one year, can be spent by individuals, can be spent on expenses, and is an amount of money given to a department.