How does Stripe deal with the currency conversion? Is this tracked by Alipay on an individual level (i.e. so consumers can't spend more then the legal conversion amount of 50k USD)?
How is that annual 50k USD monitored/enforced now? If I have multiple bank accounts, will I be prevented from withdrawing a combined 50k from overseas ATMs?
So, the bank will report these currency exchanges (including overseas ATM withdrawals from an RMB account) to some central authority like PBOC, who will then combine it with info from other banks, and thereby know if I've breached the annual limit?
There is an real-time system shared by all banks. I can see my remaining quota immediately updated whenever I made an exchange.
In your example, if you have RMB in your China bank account and withdraw RMB overseas, these are no currency exchanges at all. It's not relevant to the $50k exchange cap.