Instructions: Use the file input below to load your NACHA file. The file may be in .txt, .ach, .ACH, .nacha, or .NACHA format. Once loaded, the file will be parsed into its components (File Header, Batch Header, Entry Detail, Addenda, Batch Control, and File Control) and validated against default NACHA rules or your custom configuration. Click the gear button in the top right to open the configuration modal and set the parameters expected by your bank. When configuration settings are updated, the file is immediately re‑validated.