[Shoothe]

Wouldn't you need personal data to accept payments? Or maybe a broker (like Stripe) would store these and the end business just a reference to payment.

[xxs]

You can get external ref to payment providers. Depending on the business you might need KYC and anti laundering procedures and then it's harder.

However if you have some direct business and do accept payments - by all means make it secure and transparent to your customers.

[smu]

In lawyers terms: a payment apparently is just a contract. So you can store the data needed for the payment under that legal basis.

IANAL