ACH File Converter

ACH to CSV Converter

Open an ACH file and export its entries to CSV.

1

Source ACH/NACHA file

Use the extracted payment rows

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Continue with a tool that fits the next step in this workflow.

What becomes a row in the CSV

Each Entry Detail Record becomes a row with its related batch values. Addenda information is attached where the flat export supports it rather than being mistaken for a separate payment.

Columns included for reconciliation

Receiver and payment values

Review receiver name, routing data, account value, amount, transaction code, identification, trace number, and addenda.

Batch context

Company name and ID, SEC code, effective date, entry description, service class, and batch number explain how each row was originated.

Limits of a flat-file export

CSV does not preserve the original fixed-width record layout or every hierarchy rule. Keep the source file when raw records, controls, signatures, or exact byte-for-byte evidence matter.

Checks before importing the CSV elsewhere

  • Compare exported entry count and totals with the source summary.
  • Keep routing and account columns formatted as text.
  • Confirm how multiple addenda are represented.
  • Mask sensitive fields before sharing the spreadsheet.

Questions about ACH data in CSV

Does the CSV include batch information?

Yes. Relevant batch values are repeated with each entry so the flat rows retain useful originator and classification context.

Can CSV be converted back into an identical ACH file?

Not necessarily. A flat export may omit raw formatting and file-level metadata, so it is not a byte-for-byte round trip.

Will addenda appear as extra payments?

No. Supported addenda are associated with their parent entry in the export.

Which authoritative sources support this page?

Technical explanations are checked against these primary sources. Bank-specific requirements can be narrower than general format guidance.

  1. Nacha ACH File Details — Official record-field guidance, including Batch Header SEC codes and addenda capabilities.
  2. Nacha ACH File Overview — Official explanation of files, batches, entries, controls, and batch grouping.
  3. Nacha: How ACH Works — Official overview of ACH participants, consumer and corporate payments, and authorization responsibilities.
  4. Nacha Operating Rules Topics — Current rule changes and implementation topics published by Nacha.

Sources reviewed August 20, 2026. Nacha owns and maintains the linked materials.