Companies that collect GST also get back from the government any GST they spend. So effectively they don't have to pay for GST/HST on fuel, maintenance, even a

Companies that collect GST also get back from the government any GST they spend. So effectively they don't have to pay for GST/HST on fuel, maintenance, even a new car. Companies that don't collect GST/HST (people with sales under $30k, exempt service providers like doctors, etc...) cannot claim any input tax credit and have to pay it just like regular individuals.