What is Stripe's refund processing time?
Learn about Stripe's processing times
From Stripe:
Stripe submits refunds to your customer's bank immediately. Depending on the bank's processing time, it can take anywhere from 5-10 business days to show up on your customer's bank account.
For more information, please visit the Stripe website here: https://support.stripe.com/questions/customer-refund-processing-time