How do I accept credit cards for real estate transactions? | Payment Gods Forum

Okay, so my real estate business has been booming lately, which is awesome, but I keep running into this issue with buyers wanting to pay earnest money or even full down payments with credit cards. I've been operating for about five years now, and honestly, I'm lost on how to even begin setting up credit card processing for real estate transactions. What am I missing here- has anyone successfully done this, and what's the catch?