Yes depending.. You can writeoff expenses like insurance, management fees etc from the rental and 75% of the mortgage interest... If there's anything left over after that you pay tax on it.. For eg you earn 10,000 from your rent. Mortgage interest for the year is 10,000. You can deduct 7500 ( 75% of mortgage interest) from your rental which leaves 2,500 which is taxable. Then take away the other allowable expenses lets say there's about 1000 there. Take that off the 2,500 leaving 1500 which is then taxed. Hope that makes sense...