Hi there MGT2,
It's important that all your transactions be entered correctly for your books to be well balanced. QuickBooks Online is a great tool able to help you keep track of sales and expenses so you can see the profitability of your business. I can point you in the right direction for assistance with sales tax.
To know how that transaction should be taxed, I recommend speaking to your accountant. Their expertise will be able to help guide you in the choice of tax code to be applied to this transaction done for an American company for services in Canada. You can invite your accountant to your QuickBooks account by going to the My Accountant tab. You can also find an accounting professional near you who has experience using QuickBooks by clicking on the Find a pro to help option to help you in this section.
If you have any other questions, feel free to reach out here.
