A must do for who? The entire issue of incorporation started with Gerry Butts advising McGinty to allow Ontario doctors to incorporate so the Province would not have to increase their pay. Lower the tax rate to increase the take home and keep doctors on this sides of the border. When the the provinces followed suit it became one of the main reasons my Brother left Mass. General and came home. The silly Liberals are in their on echo chamber and are playing with a fire thaTs about to get out of control. Most small business owners voted Liberal in 2015 and we'll see what Singh does o the Left and Scheer on the Right.