If a card is swiped through a Stripe reader the processing fee per transaction is 2.75%.
If a card is manually keyed in by the Business or paid online by a Client, the processing fee per transaction is Stripe's standard rate of 2.9% + $0.30.
If either swiping or manually keying in an American Express card, the fee is always 2.9% + $0.30.
Note: As of 8/23/23, due to an increase in payment security, USB Stripe readers will no longer process payments.