ACK (ACH Payment Acknowledgement)
An ACK entry is an acknowledgement by the receiving depository financial institution (RDFI) confirming the receipt of a corporate credit or debit (CCD) credit entry.Learn More
NACHA (National Automated Clearing House Association – The Electronic Payments Association)
The national trade association responsible for developing and enforcing ACH rules and guidelines.
RCK (Re-presented Check)
An additional presentment of an eligible returned paper check through the ACH network.Learn More