To cover unexpected budget shortfalls, you can reallocate funds between budget categories (A group of income and expense transactions, used to track income and spending in Money reports.) . For example, if you exceed the amount in the current month's Automobile category by $100.00, you can reallocate $100.00 from next month's Automobile category, or take $100.00 from this month's Dining Out category to cover it. By reallocating funds, your budget evens out over the course of the year.

Reallocating funds between categories doesn't permanently change your budget. To change one of your spending categories and have that change show up every month, you must edit your budget.