Hi @Christian48
I understand that you don’t have Registration Based Taxes setup on your store at this time. If you are selling to the UK/EU this will be an important step for you to complete. Depending on your tax setup you had on your store when we rolled this feature out, you may not have been automatically opted in for it. If that is the case you will want to contact our live support and let them know that you need to enable “Registration Based Taxes” on your store. From there, they can reach out to the appropriate support teams internally to get that feature enabled (Feel free to share this forum post for context). You can also see more information on this here: Manage Your UK Taxes.
To contact our live support please follow this link: Shopify Help Center - Contact Support, sign into your store account, search for your issue and use the contact support button at the bottom of the search results to see all our live support options.
As @Savvy_Paul shared in their screenshots, registration based taxes allows you to provide your tax registration ID for the appropriate countries/states/provinces you sell to and uses our automated tax system to check the appropriate tax and apply it at the checkout. After July 1st, this will be updated to include your OSS/IOSS registration information to capture taxes on orders that meet the specific threshold requirements put in place by Brexit.
In regards to the integration of an external services to work as your intermediary for businesses using the IOSS model, I want to reiterate that your feedback here is being shared with the appropriate teams.
I know that while IOSS registration is not mandatory, the simplification of the checkout experience it provides is definitely the ideal option for businesses with a lot of sales to the UK/EU. At this time, because IOSS is not a legal requirement Shopify does not provide a built in integration for an IOSS intermediary.
Based on the information that has been shared in this thread, Taxamo does offer an integration solution but that is restricted to our PLUS store plans as it requires access to the checkout API. If there are other options available for this integration, the ability to offer it is entirely in Taxamo’s, or any external providers, hands to create. They have full access to our API documentation and can develop and list their app in our app store. If they require any support from our developers, that is something handled by a team outside of my own and I am not able to provide additional insight into that process on the back end. Shopify does not control the integration of third party apps and services and if you would like to have features provided by a third party company (Like Taxamo), you will need to contact them directly to ask them to create a suitable app integration.
I am going to mark this response as the “Solution” to make it easier for other merchants to see the information shared here. Please feel free to continue sharing your feedback and I will answer any questions I am able to.
Thank you!
-Shay