An OCMOD XML file to add fields to the admin so you can enter the price of a product including taxes, and have the price excluding taxes calculated for you using JavaScript.
Adds fields to the data, options, special and discount tabs of the product edit form, and shows prices including tax in the product list view.
Use the extension installer in Opencart to install the xml file Then go to 'Modifications' and click the refresh icon to apply.
You'll find a configuration option to switch it on and off in Settings -> Edit Store -> Option -> Taxes
v1.1 - Fully functional and tested v1.0 - Adapted code to the OCMOD platform