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 3 |
Access
|
High-value payment system - Lynx | |
| Best practice |
CACPA code straight-through processing (STP) formatting
|
High-value payment system - Lynx | |
| Rule 14 |
Claims and compensation
|
High-value payment system - Lynx | |
| Rule 4 |
Commencement
|
High-value payment system - Lynx | |
| Association By-law No. 6 |
Compliance
|
Retail batch payment system, High-value payment system - Lynx, System by-laws | |
| Rule 15 |
Cross-border Arrangements
|
High-value payment system - Lynx | |
| Guideline |
Deduction of charges for the receipt of Lynx payments
|
High-value payment system - Lynx | |
| Rule 12 |
Emergencies
|
High-value payment system - Lynx | |
| Rule 9 |
End of payments processing cycle
|
High-value payment system - Lynx | |
| Rule 10 |
Finality and return
|
High-value payment system - Lynx | |
| Rule 2 |
General
|
High-value payment system - Lynx | |
| Quick Links - Lynx |
High-value payments - Lynx system rules, procedures and by-laws
|
High-value payment system - Lynx |