How did you solve adding VAT?

Hello, I am selling to Europe and therefore need to calculate VAT from the price. I’ve tried almost everything, but if the order comes to funnelish and then send it to shopify, it doesn’t include VAT, which is wrong. I need to set up funnelish to be able to send the total price with calculated VAT to shopify.

Can someone please advise me how to solve this? Or if it can be programmed somehow?

Thanks a lot.