Rolling budgets are continuous budgets that are regularly updated after the expiration of previous budgets, or they can be called extensions of current budgets. Budget rollovers are also known as rolling budgets.

A rolling budget is a budget that changes with the time. The budget is made up of months, weeks, days, hours, minutes, and seconds which can all be covered when spending money. With this type of budgeting method there are no set budgets for certain periods in the year.