Updated for Opencart 3.0.0.0 - 3.0.2.0
This extension will let you insert prices for products with or without tax. A lot of Opencart users have their product prices WITH tax and it's a hassle to convert each product without tax and then insert them in the product prices.

this modification allows you to insert prices with tax in:
- Product Price including tax
- Product Options including tax
- Product Discounts including tax
- Product Specials including tax

click the demo button and see it in action

When ever you enter a price in the field Price+tax the price without tax is automatically calculated (based on the choosen/used tax class). If you change the tax class, the price without tax is automatically calculated

Make sure you have vqmod installed. If you don't have vqmod installed:
- To install vqmod, you will have to download it from https://github.com/vqmod/vqmod/releases/tag/v2.6.1-opencart
- Download latest version : vqmod-2.6.1-opencart.zip
- Unzip -> ftp files and folders to the root of your Opencart Installation.
- Login in admin and go to this URL http://yoursite.com/vqmod/install (replace 'yoursite.com' with your own domain)

INSTALLATION
====================
Just drag the folder vqmod (in folder upload of your current version of Opencart you are using) of this extension in the root of your webshop (FTP) - or - find PSM_Admin_prices_with_tax.xml in this package and ftp this to vqmod/xml/

- After that go in admin to System --> Settings --> Options ->Taxes
- Set "Insert Prices Including Taxes" to yes and choose wether you want "Calculate Taxes Based On The Store Location" or not. Make your selection and hit "Save"
- Navigate to Catalog -> Products -> Edit a Product (or create a new one) and see the new price-field "Price+Tax"
- Insert the price with tax and set the Tax class -> See how the price changes......

That's it! Enjoy You are now a step closer to a perfect Opencart System

NOTE: not tested on Mijoshop and equivalents and only works on default admin template!