The main differences between ACH vs check payments are cost, security, and speed of delivery. ACH transfers are electronic whereas checks are physical documents that are manually sent – making ACH transfers a safer and more efficient payment method.
With real time payments, the payee’s account is credited immediately, and the payer is instantly notified about the status. With a paper check, however, a payee could delay cashing it, leaving the payer with an unreliable cash balance and the potential for writing bounced checks. RTPs eliminate that.