Also i am registered at OSS and have activated this feature within shopify.
Now i am in the testing process:
I put something into the cart and checkout and change to the target country Spain or Austria and no TAX will be calculated within the checkout after editing the target address and clicking to the next step with payment.
we know exactly what you are talking about! We have the complete solution for you, full EU VAT compliance automation. The solution supports all operating models, whether intra-EU or non-EU. You are nearly there, just book a meeting with us here (link: https://meetings.hubspot.com/robert662/30-min-demo ) or check out EAS EU VAT automation (link: https://apps.shopify.com/eas-eu-compliance ) at Shopify App store