Adding a Tax Rate Per Line Item, Including HST, GST and PST
Sprout Invoices includes a method to adjust a line item by %, at first you might think this is strictly for discounts, with a negative value the rate is calculated as a tax rate. For example, adding -10 would add 10% to the line item.
Sprout Invoices also includes two additional tax rates, which can be added to the total of the invoice.
Advanced tax rates can be had with the Advanced Tax Rate add-on. If you need a tax rate that's not the default for that add-on (HST and PST) let us know via priority support and we will be happy to provide a filter to modify the add-on to your needs.