I keep all the copies of invoices issued to parents over the year so I can tally up the 'fortune' at the end of the year. Add up all my other bills pertaining to daycare which is....well....almost everything. Then I gather up all the receipts out of purses, pockets, the junk drawer and plastic bags, spread them out on the floor, open a bottle of wine and camp on my living room floor with them every night for a week till they're all sorted, added and looking so tidy that it impresses my accountant

Every year I swear I'll do it month by month. 13 years later and it's not happened yet.