Hi icepalacegolf,
I’d like to commend your initiative for changing the tax codes of your sales to HST.
Aside from setting up HST on your Square company, you will want to check your mapping too. Please be sure to use HST, so it will show on the transactions that will be synced in the future. You can do this with the help of the Square support team.
Feel free to add a comment below if you have other questions.