Hi there Angela115,
Thanks for reaching out about your taxes. QuickBooks Online is a great tool able to assist you in keeping track of sales tax in order for you to know the amount to declare. I can point you in the right direction for assistance with this.
To enter a tax code that doesn't report to the GST/PST/HST payable account, you can go to the Taxes section, then Manage Sales Tax.. Beside The first Tax Agency's name, click on Add Rate, then give this tax a rate. Select if this is applicable expenses, then in the Account dropdown, select Non-Tracking. This will put the money for the tax in the same category then the expense line on which it's applied.
If you have any other questions, feel free to reach out here.
