Nacha Operating Rules - New Rules
The Nacha Operating Rules are the foundation for every ACH payment. By defining the roles and responsibilities of financial institutions and establishing clear guidelines for each Network participant, the Rules ensure that millions of payments occur smoothly and easily each day. All Rules are displayed by effective date.
Access Complimentary Rules Webinar Recordings
Feb. 5, 2026 Recording April 19, 2024 Recording
Click here for a list of approved rule changes and implementation dates
RISK MANAGEMENT TOPICS – (Fraud Monitoring Phase 1)
These Rule amendments related to monitoring for fraud become effective on March 20, 2026 and are part of a larger Risk Management package intended to reduce the incidence of successful fraud attempts and improve the recovery of funds after frauds have occurred.
RISK MANAGEMENT TOPICS – Company Entry Descriptions
These two Rule amendments on Company Entry Descriptions become effective on March 20, 2026 and are part of a larger Risk Management package intended to reduce the incidence of successful fraud attempts and improve the recovery of funds after frauds have occurred.
Expanding Same Day ACH
This rule expands access to Same Day ACH by allowing Same Day ACH transactions to be submitted to the ACH Network for an additional two hours every business day. The new Same Day ACH processing window became effective on March 19, 2021.
Learn more about Same Day ACH with our Resource Center.
Supplementing Fraud Detection Standards for WEB Debits
The WEB Debit Account Validation Rule became effective March 19, 2021. The rule was originally approved by Nacha members in November 2018 to become effective January 1, 2020.