Announced at WWDC 2017, Apple Pay Cash is Apple’s answer to services like PayPal. It lets you send money to other iOS users via Messages. The money you send is taken from the Apple Pay card(s) you already use. When that cash is received, it is added to a new virtual payment card found in the Wallet. You can pay for things using the balance on that card and Apple Pay. You can also transfer the money into your bank account.
What are the fees and limitations of Apple Pay Cash?
Apple Pay Cash is made available with help from a company called Greendot. You can read the terms and conditions for what they do here. On that page, you’ll find the following fees: