I'm having a hard time in trying to find a way by which I can update the taxlines of the lineitems at the time of checkout.
Actually I'm trying to use a third party api to fetch the tax amount from there and replace the tax calculated by shopify.
Please if someone can suggest me any way.
Please its urgent.
@Vibhuti_Choubey I have also been chasing down this path of getting access to call an external API to get more accurate tax rates than what is available in Shopify. So far what I have found is Shopify does not expose the taxline or totaltax properties to the general users. They have a partnership with Avalara which appears to be the only partner that can interact with this. I have spent hours with Shopify Partner Support, via chats, emails and phone calls and so far have not been able to get a clear direction on how to do this.
I believe that if you are a Shopify Plus Developer you may be given access to this. Earlier times there was a Tax Service API which was exactly what we are looking for. However this is no longer available to general users.
Please let me know if you solved this or found a workaround.