Hi! Is it possible to add a tax code along with an order when creating an order via Shopify's API? Customers are being charged incorrectly in taxes after our current API code creates an order and it doesn't look like we have an option to apply tax codes. For context, we're getting our tax codes from Avalara. Thank you in advance!
As far as I'm aware you can read tax fields associated with transactions, but can't write to them. If you search the forum you'll see more than a few threads related to this. Since AFAIK the only iron-clad way you can ensure you're properly collecting sales taxes for all the oddball locale-specific scenarios is to have Shopify Plus with the Avalara app.