Can I change my budget each month

Usually I have a set income, but I occasionally get one or two extra payments into my account, for example the cost of living grant. This increases my budget for one month. Can i change my budget for that month without it affecting the previous months?

When looking at previous months, we should you information based on what the budget was at the end of that month.

So - changes you make to your budget today, don’t change the historic budgets for October, September etc.