Hi @Sam4794 ,
Disclaimer, I am not licensed to provide specific information or advice. The below is general knowledge that can be found on the CRA website. BTW all taxes are ultimately the hosts responsibility as they are providing the service. Airbnb is only a tool to market and collect guest payments.
So you know, GST/HST is setup on the federal level and then flows down to the provinces.
You can set up your tax accounts on your listing and add your tax id's if you have them. You then have the option (a checkbox) that tells Airbnb that you agree to file directly to CRA. I am presuming that is needed so that your guests are not charged twice.
One thing about GST/HST is that once you earn $30,000 in a year, suppliers (you) are required by law to deduct and remit these taxes. As well, you will be able to claim the input tax credit, that's where you likely need an accountant.
If your sales are over, $7,500 per year and under $30,000 you may voluntarily deduct and remit. The reason for this is that allows you to claim the input tax credits.
Municipal Accommodation Taxes (MAT) are the new rage in a lot of municipalities as a way to gain tax dollars from tourists. In the case of South Bruce Peninsula for example, as of Jan 1, 2022 all STR's are required by by-law to be registered and approved with the city. STR's are then required to deduct and remit 4% of the room rate. Each municipality does things in their own way.
Truly, if you are not sure, you would be well advised to contact a tax accountant as there are many implications with regards to collecting, remitting, year-end reporting.
I hope this information helps.
Best of luck, whatever you decide.
@Sybe , @Emiel1
Hope this gives you some insight.