Frequently Asked Questions About ACH Processing

The NACHA website (Opens in a new Window) has clear instructions for new user sign up, claiming your subscription, and logging in to the system. In addition, they provide NACHA Resource Guidelines that may be helpful.
You’ll want to review the file to confirm that there are no duplicate payments. If you remove any duplicates, and still receive the error, please call your local Northwest Bank office or report the issue using the link to the right.
Corrections and file reversal processing are available under specific circumstances and within five business days of the original settlement date. Please call your local Northwest Bank office for assistance.