Improved cost control

With a planned annual budget of expenses, moving on to the month, we see the permissible amounts of monthly expenses by category. It would be good when at the beginning of a new month the amount of expenses is taken into account based on expenses in previous months. Example: the expense category "fast food" annual budget $ 1200. monthly $ 100. if in January I spent $ 150, then at the beginning of February the available amount for the month will be $ 50. thus, we will see in which categories we should be more economical this month, so as not to go beyond the annual budget for total expenses.