Problem with Draft Order API adding VAT Exempt

I have commented on this thread: https://community.shopify.com/c/international-commerce/draft-orders-tax-exempt-tax-not-being-deducted/m-p/1349998/highlight/false#M1994 and Elias told me to create a topic here.

Problem: Can’t create a draft order and add a Customer with VAT exemption. The total price always show wrong

I think this is a core bug of Shopify Platform

Steps:

  1. Customers login (this customer is tax-exempt)
  2. Add to cart
  3. Checkout with Draft Order. Tax is not exempt (although we checked the return API, Shopify set True on Tax Exempt)

Configs:

  • Product is set “charge tax”

  • Customer is tax-exempt

  • Tax country rate is set

  • Tax config: All products include tax

This case is very important to B2B Customers. We use this solution to create custom prices for specific customers and make tax-exempt for them
Shopify checkout default order works well, the problem happens with Draft Order

See my video attachment for more information