> <i>homeowners who have regularly rented out their property on Airbnb or other short-term rental sites will be subject to paying 13 per cent HST when putting the home up for sale</i><p>How are they defining regularly? If someone rents out their home for one weekend every month, will they be liable for that 13% tax? Regardless of whatever threshold they choose, it seems weird that someone's tax liability will jump from 0 to potentially hundreds of thousands, because of a tiny change in their renting behavior.