Step 1: Click on the Person tab in the main menu.

Step 2: Set the view to Suppliers using the drop-down menu.

Step 3: Double-click on the name of the supplier for which you want to modify the record. This will open the supplier record.

Step 4: From here, make the necessary changes.

This is where you will be able to change the taxes applicable to transactions made with this supplier.

Step 5: Save your changes using the green check mark.

The "Taxes" field allows you to determine, from the drop-down menu, which type of taxes will be applied to transactions made with the supplier.

By default, the tax rate depends on the province entered in the supplier's address.

For example, for a supplier to whom we would like to apply Ontario taxes, we would simply (1) select the appropriate taxes in the drop-down menu and (2) ensure that the province entered in the address of the supplier's person record is Ontario.

If you want the tax rate to be the one of the province of your office instead, just check the box "Apply the tax rate of the province of the office".

This will ensure that even if you have, for example, a supplier whose address is in another province, the tax rate will be that of the province of your office. In other words, when this box is checked, the tax rate no longer depends on the province of the supplier.