My felt business is registered because the BIN is also my GST/HST number for collecting and remitting taxes. My daycare is not registered since Revenue Canada has not been as open about home based businesses in the past. Now it is much more commonplace rather than the exception and things have been opened up to us too such as registering without all of the other options being a necessity. Will I bother for the 5-6 more years I am likely to be doing this not sure. That is about how long the license would last. Again using a SIN number wasn't something that was considered an issue years ago either and it was asked for by many places that are no longer allowed to use it which is pretty much everyone. It was what we used for ID.