_alex - VAT

[amber pivot]

Hi there! Just to be clear, are you referring to customer tax IDs? https://stripe.com/docs/billing/customer/tax-ids

[pastel umbra]

correct

Wait, I think I get the correct country when I add the country code in front of the number (e.g. DE1234....). Still, I would expect an error message.

[amber pivot]

Also just to confirm, are these the tax IDs you're using to test? https://stripe.com/docs/billing/testing#customer-tax-id-verfication

[pastel umbra]

nope - I am using a real taxID. If I would use 000000000 I would have Austria associated with it (AT code)

I am using a random TaxId I found on the web: LU18175618 (Luxemborg), if it helps

Using only "18175618" would give me Hungary (HU), even though the billing address' country would be set to Luxemburg

[pastel umbra]

BTW: You seem to have an error in the docs:
"Austria | eu_vat | European VAT number | ATU12345678"

I believe that it should have only "AT" and not "ATU" as prefix.

[amber pivot]

To simulate a tax ID for a specific country, any ID should work as long as it matches the example format here: https://stripe.com/docs/billing/customer/tax-ids#supported-tax-id

Our docs flag this but, in terms of validation, we validate whether the tax ID is a valid one or not. You'll need to validate the customer address and ensure it matches their registration: https://stripe.com/docs/billing/customer/tax-ids#eu-vat