Yes, we have to deal with the budget weekly, because our tax credits go in weekly.
That's why I break down our bills into each week.
The basic principle is 'what does this money have to do until we next get money?'
So, on the first day of the month, around 2/3 of our bills go out. We allocate DH's wages to all of those bills, then left over wages, etc., get put against groceries, fuel, etc., then anything left over goes towards 'saving goals' such as Christmas, birthdays, etc. That's week 1.
Then, the following week, we have 5 or 6 bills. Again, we allocate for the bills, then distribute anything left over amongst the variable categories - groceries, fuel, then discretionary spending categories.
The third week is heavier - 3 biggish bills, so after groceries and fuel, we can pad out the discretionary spending categories a little.
The fourth week is very light, so we can save some back for the following month's week 1 bills, to ease the burden on the wages.
Then it all starts again 