To set up tax codes, navigate to Resources >> Tax Codes
Tax codes should correspond with those set up in your third-party accounting system.
Click the [+ New Tax Code] button.
Enter the tax code and description.
Percentages must be entered as decimals. For example, an 8.25% tax would be entered as 0.0825.
Once tax codes are set up, go to Resources >> Customers and edit your customers to assign these codes to each customer record. Then, any orders made for the customer will default to the tax rate assigned to them. Remember: the tax code for particular orders can still be changed for each order by editing the products on that order.
We now support a Secondary Tax Rate and calculation to handle additional VAT, City, or local taxes.
Enable Secondary Tax by going to Administration >> Portal Settings and checking the "Use Secondary Tax" box under Other Settings.
Then, navigate to Resources >> Tax Codes and add or edit a tax code to include secondary tax.