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
Standard 010
Standards and Guidelines for the Standard Intermember Control Document
Retail batch payment system
Standard 013
Return Replacement Document Design Standard
Retail batch payment system
Standard 014
Clearing Replacement Document Design Standard
Retail batch payment system
Standard 015
Companion Document to the ANSI X9.100-187-2008, "Specifications for Electronic Exchange of Check and Image Data - Domestic"
Retail batch payment system
Standard 018
Payment Item Information Security Standard
Retail batch payment system
Standard 023
Technical Requirements Applicable to Electronic Data Interchange
Retail batch payment system