[superdeeda]

I really liked checkout.com. Their documentation is top notch, their support was helpful (albeit a bit slow) and their error codes are useful. We were also a UK-based company fyi.

It’s hard to move between payment service providers (PSPs) if you don’t want you’re users to have to enter their cvv again and go through SCA again. PSPs are reluctant to help you export your users’ cards to another PSP (obviously because they’ll be losing out on your payments then). However, most of them should have some kind of export process if you manage to get to the right support person.

You could use a card proxy service like PCI Proxy if you know you’ll be using many different PSPs or move between them a lot, but they charge a fee for each proxy call AFAIK.

I’ve heard that https://www.paddle.com/ is useful for handling tax across multiple different countries.