Hi Mickyc....I keep receipts for any other incidentals I claim....the only receipts I wasn't keeping was groceries....keeping it at 3.50 per child...I don't believe will ask for an audit...and I keep the 40% for space used in the home. I DON'T USE MY CAR....so I am not sure what else I am missing out on....I have had H&R do my taxes for the past 5 years.....