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You might be eligible for <30 EUR exemption: https://stripe.com/en-US/guides/strong-customer-authenticati...

You’d still have to handle the complete flow for the case where the exemption has been used multiple times since the last authentication though.

This should help: https://stripe.com/sca

Sounds like you're in Europe, do you handle VATMOSS?

I built Quaderno to deal with the VATMOSS nightmare on Stripe. More information at https://quaderno.io/integrations/stripe/. Let me know if you have any questions. Glad to help.

I've tried Quaderno in the past for a simple SaaS I built but found it didn't really work, it was a while back so I may be misremembering but I believe you couldn't use Stripe Billing's built-in free trial system with it, because the Quaderno checkout would create a new customer.