[jokethrowaway]

it's not easy, it's a nightmare for both you and your accountant (which is happy to charge you for that)

Use paddle or revin instead of stripe or use stripe with quaderno or with stripe tax.

Stripe tax doesn't work too well yet imho but it may end up getting there

[jiggywiggy]

In EU it's easy if you have their VAT numbers, otherwise you just have to charge it. If you have EU VAT nr it's actually work for your EU customers, they have to pay for it without it being on the invoice.