I have a Fujitsu ScanSnap S1500M and I scan all my receipts directly into evernote. I file the receipts based on what the purchase was for. For example, my computer stuff goes into a notebook for my computer. My tool receipts go into my home inventory notebook. And so on. For tax stuff, I use tags. I have a 2011-Tax tag I add to all my notes that I need to remember for tax time. This way I can file things logically, but also recover them at the end of the year (or any year) so I can do my taxes. For Sales Tax I use two different methods. The first method is like above only I add a second tag (2011-Sales Tax). The second method is for stuff I don't need the receipt for other than the sales tax. I have a box in my kitchen and everyone puts their receipts in this box. For EVERYTHING. School supplies, groceries, eating out, gas, etc... I mean everything. Every Sunday, I grab all the receipts out of the box and scan them into EN as 1 note. I add the total sales tax dollar amount to the title and add my sales tax tag. I also file the note into a "Sales Tax" notebook. At the end of the year, I can call up the 2011-Sales Tax tag and just add up the dollar amounts in the title of all the notes to get my total sales tax for 2011. This helps a lot at tax time.