Hi @SiggyMarvin,
That's a great question and I can answer it with the information we've been provided. When processing a payment via a debit or credit card, several of them will use the same processor which means we would incur fees regardless of whether it's a debit or credit card. Card processors and banks will do this as you're afforded a lot more dispute options when transactions are processed as credit. When debit cards are rarely processed as a debit card, we don't incur a fee for processing this payment. However, it happens so little, that we choose to have a flat rate for cards when you send a personal payment.
Debit cards have the ability to process as a credit or debit. Most places like Venmo will only allow a debit card to process as a debit to ensure that fees aren't charged to them to process the payment. However, this option can also limit the ability as to which cards can process with them. There is a give and take in each situation. I know this response can be confusing but I hope it helps you understand the difference.
Regards,
Drew
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