It's not the spreadsheet that I have trouble with. It's understanding the tax law so that I can know what kinds of things can be claimed and what can't, how the government wants all of that presented, which forms are needed for what, and how to use them. And also knowing how to do all of the corporate red tape. The spreadsheet is easy. We pay our accountant to know and understand tax law. Something tells me that tax law is a lot less complicated in Canada than it is in the US.