Hey Irvin, that’s a tough question to answer specifically, because it depends on the credit card vs. PayPal decision. As we get lower on the scale, say under about $7 USD, PayPal is better b/c we have a “micro” account with them as well, where the per-transaction fees are only $.05 (as opposed to most other donations, which have a $.30 per transaction cost on top of the 2.2%.) Also … to figure this accurately, you really need to know the probability that any given transaction is fraudulent, which has potential for a $15 fee … so, basically, it’s complicated. 
1 Like