Additional Tax Extension

additional-tax
Free extension for invoicing in countries/regions where two different taxes or tax rates are used together.

Some countries/region require more than just one tax on invoices — for example, the country of Spain has VAT and IRPF; the Canadian province of Quebec has TPS and TPQ; and so on.

This extension adds extra fields in the Sliced Invoices –> Payment Settings page which allow you to set global settings for your additional tax rate, which you can also override on a per-quote or per-invoice basis if needed.