Inside my suitcase upstairs is a huge manilla envelope that has the majority of receipts in it for my trip to South America. Since some of them represent expenses that I can write-off on the business side, it was important to keep them for Revenue Canada in the odd event of an audit down the road. Unfortunately for me though, it meant that I had to collect all my receipts while traveling around the world. It's one thing when you have an apartment in Canada and everything can be sorted into file folders once a week or so, but when you're traveling with a backpack and trying not to accumulate anything ...