Rules & documentation

ACSS rule changes enhance payment system processes

These changes took effect on July 27, 2026.

Payments Canada has implemented a series of administrative and operational amendments to the Automated Clearing Settlement System (ACSS) rules. These updates provide expanded definitions and process efficiency.

Payments Canada’s rules, standards and procedure documents are updated regularly and versions posted online are in force. You can contact Payments Canada for confirmation by e-mail at info@payments.ca.

Item Title Updated System
Rule 11
Cross-Border Arrangements
Real-Time Rail payment system
Rule 12
Suspension, Revocation, Withdrawal and Reinstatement
Real-Time Rail payment system
Rule 13
Fraud Management
Real-Time Rail payment system
Rule 14
RTR Financial Institution Number Lookup Database
Real-Time Rail payment system
Rule 15
Settlement-Only Direct Settlement Participant
Real-Time Rail payment system