ACH File Format

The ACH file format consists of multiple levels of information that ensure proper processing and settlement of electronic payments through the ACH Network.

Nacha Batch/File Level Information

Entry Level Information

Suggested Resources

ACH Audit Workbook

Workbook designed to assist financial institutions in completing required annual audits. Available through your Payments Association.

ACH Participant Directory

Provides quick access to routing numbers and contact information for financial institutions that participate in the ACH Network.

ACH Quick Reference Cards

Seven-card series covering ACH Returns, NOCs, Special Exceptions, Electronic Check Applications, IAT, WEB and TEL. Available through your Payments Association.

ACH Risk Assessment Workbook

Workbook designed to assist financial institutions in completing ACH Risk Assessments as required by regulators. Available through your Payments Association.

ACH Risk Management Handbook

Guide for analyzing risks associated with ACH processing and recommendations for risk control methods and procedures. Available through your Payments Association.

ACH Rules

Complete ACH Rules documentation. Available through your Payments Association.

Electronicpayments.org

Website designed to assist financial institutions, businesses and consumers in understanding electronic payments.

Go Direct®

U.S. Treasury campaign to motivate federal benefit recipients to use direct deposit.

Green Book

Comprehensive guide for financial institutions processing Federal Government ACH payments and collections.

OFAC Specially Designated Nationals List

Listing of targeted countries, nationals and entities requiring asset and transaction freezing.

UCC Article 4A and ACH Network

Source information for UCC 4A with commentary. Available through your Payments Association.

Glossary

A

B

C

D

E

F - H

I - L

M - O

P - R

S - U

W - X

This appendix serves as a comprehensive reference for ACH processing terminology and procedures. Bookmark this page for quick access to definitions and explanations of ACH-related terms and concepts.