Budgets can be a living thing – in other words, they should change based on your needs.
Think about it this way…
When was the last time your income changed? When was the last time you had additional bills, another payment like a loan, or some other large expense?
These all happen. And, they can all be good times to review and alter your budget.
How often is a good amount for altering my budget?
The simple answer is: as much as you need.