How to Identify Financial File Formats
💰 Open the Financial File Detector to try every feature described in this guide.
Open Financial File Detector →What Is the Financial File Detector?
The Financial File Detector identifies which supported financial format an uploaded file most likely is: OFX, QFX, QBO, MT940, or IIF. Detection is based on file extension and content inspection — every matched indicator is shown so you can understand why the verdict was reached.
Try the Financial File Detector — free, private, no install.
Open the Tool →Formats Detected
| Format | Key Indicators |
|---|---|
| OFX | .ofx extension, <OFX> element, OFXHEADER marker, transaction elements |
| QFX | .qfx extension, OFX markers, <FI> financial institution element |
| QBO | .qbo extension, OFX markers, <ACCTTYPE> element |
| MT940 | .sta/.mt940 extension, :20: :25: :28C: :60F: field markers |
| IIF | .iif extension, !TRNS !ACCNT !END record headers |
Indicator Transparency
Unlike black-box detection tools, the Financial File Detector shows every indicator it checked — both those that matched (✓) and those that did not (—). This lets you understand the confidence of the verdict and diagnose edge cases such as files with unusual extensions or missing headers.
Privacy
All detection is local. Your file never leaves your browser.
For a step-by-step walkthrough see the Financial File Detector tutorial.