I used RfP (Request for Payment) today for the first time. It was ~11k USD between IBKR and Chase and the transfer was instant with verification on both sides. It's interesting to see the evolution of payments in the US moving so quickly over the past few years (FedNOW, etc...)
I was transferring to myself (different bank). The message from the sending bank triggered a push notification from the receiving bank which I approved and the money moved instantly. This works for up to $10MM I believe.
