Invoice - modify tax rate for all product line items at once?

Using my Dolibarr
1

We are required to apply tax based on the province of the customer as is available in sage 50
This creates a problem when creating an invoice in dolibarr since tax is based on product in dolibarr.

Is there a workaround where tax can be modified for all products in an invoice at once?

manually modifying fifty line items per invoice or creating duplicate products per each province is not an option

2

Hello,
Have a look at the module CustomLine https://www.dolistore.com/fr/interface-utilisateurs/438-CustomLine----dition-rapide-et-import-des-lignes-des-documents-commerciaux.html. It think it should suit your needs. Otherwise you’d have to write your own module and take profit of the doAction hook.

Regards,
Marc