What it does is take the total in column B at the bottom of the page and at the first of the month it changes that formula into just the number value instead of a formula. That way it the total in B for let's say the month of March will not keep changing now that it is april. if the cell that gives you your total in column b didnt move then I wouldn't have this problem but sometimes it moves down a couple lets say from row 38 to 39 or 40. I hope this makes it clearer.