**Target URL:** `/learn/banking-statement-formats-mt940-vs-bai2`
**Target Query:** mt940 vs bai2
**Intent:** Understanding the differences between the two most common bank statement formats to inform parser development and treasury reconciliation strategies.
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When evaluating electronic bank statement formats, the primary difference between MT940 and BAI2 is their regional origin and structural design. **MT940** is a SWIFT international standard built on a tag-based architecture (e.g., `:61:` for transactions) that dominates global and European banking. In contrast, **BAI2** was developed by the Bank Administration Institute and is the standard for North American corporate banking, utilizing a hierarchical, comma-delimited record structure (e.g., `16` for transaction details). While MT940 relies heavily on a single free-text field (Tag 86) for transaction context, BAI2 uses highly granular, 3-digit type codes to specifically identify different credits, debits, and balance types like ledger and float, making it better suited for complex US cash management.
**Q: Can a company use MT940 in the US?**
A: Yes, but it is less common. Large US banks can provide MT940 statements for international corporate clients, but BAI2 remains the native and more detailed standard for domestic US accounts.
**Q: How does BAI2 handle transaction details differently than MT940?**
A: BAI2 uses specific 3-digit type codes to categorize transactions (e.g., identifying a check deposit vs. a wire transfer). MT940 relies on a more generic code and places the specific details in an unstructured free-text field (Tag 86).
**Q: What is a BAI2 continuation record?**
A: Because BAI2 lines have length limits, long transaction details wrap to the next line. These wrapped lines start with the code `88` and must be combined with the preceding transaction record by your parser.
**Q: Are these formats being replaced?**
A: Yes, both MT940 and BAI2 are gradually being phased out in favor of the newer, XML-based ISO 20022 standard (specifically the camt.053 format), though the transition will take many years.
**Q: Why is parsing MT940 difficult?**
A: The main difficulty lies in Tag 86, which contains the narrative description of the transaction. Because it lacks strict sub-fields, extracting structured data like invoice numbers requires complex, bank-specific parsing rules.
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