Default Tax Class is a free extension for OpenCart 3 and 4 which help you set default tax class for new products created via admin.

No coding skills required.

Added version for Opencart 3.5.0.0.
Added version 2.0 for Opencart 4.0.2.0 and newer.

Instructions for Opencart 3:

1. Upload extension in Extension -> Installer or through Marketplace
2. In Extensions -> Modifications refresh press refresh button
3. Then install it and enable in Extensions -> Extensions -> Modules -> Default Tax Class
4. Edit Default Tax Class, set status to Enabled and choose default tax class which should be on new products, Save
5. Enjoy :)

Instructions for Opencart 4:

1. Upload extension in Extension -> Installer or through Marketplace
2. In Extensions -> Installer install Default VAT for new products
3. Then install in Extensions -> Module -> Default VAT
4. Edit Default VAT module, set status to ON and choose default tax class, Save
5. Enjoy :)