1. Fill a binder with plain 3-hole punched paper and 12 monthly index dividers — one for each month. 2. Instead of shuffling receipts off into a file box (or lets be real, a shoe box), scotch tape your receipts to the paper. 3. Once you fill up a page, add up the receipts and jot down the total in the corner. 4. Use the index dividers to separate the months for easy reference.