I use Turbo tax as well - just be careful with the business use of home because the equation used is NOT for shared space but dedicated space - it does not figure out the hours of business over hours of personal use and days open verses closed that we are required to do ... So to trick the software you need to figure out what percentage you are allowed to use using the CRA calculation for US and put in the square footage used over total that will give you that percentage ... So for example I'd your percentage is 23 that you would tell the program you use 230 feet put of 1000 feet - which would be the 23 percent of the total expenses input ....otherwise if we just put in our real square footage used it will write off way more than we are allowed cause it assumes we use that space 100 percent of the time -like a hairdresser or someone with a home office would ...hope that makes sense