OFX vs QBO: Which Format Do You Need?
OFX (Open Financial Exchange) is an open standard for financial data. QBO is Intuit's proprietary variant, specifically designed for QuickBooks. The internal structure is nearly identical — the difference is in the file header and some Intuit-specific extensions.
Use QBO if you're importing into QuickBooks Online or QuickBooks Desktop. Use OFX if you're importing into MYOB, Sage, Money, or another OFX-compatible platform that isn't QuickBooks-specific.
| Format | Standard | Compatible Software | Zera Books Support |
|---|---|---|---|
| QBO | Intuit proprietary OFX | QuickBooks Online, Desktop | Full support |
| OFX 1.x | OFX open standard (SGML) | MYOB, Sage, Money, various | Full support |
| OFX 2.x | OFX open standard (XML) | Modern banking apps, APIs | Full support |
| CSV | Plain text | Varies by software | Input format — converts to OFX/QBO |
When in doubt: If you're using QuickBooks, export QBO. For MYOB, Sage, and most other platforms, export OFX. Zera Books generates both from the same CSV input. See the full CSV to OFX converter.
What a Valid OFX File Contains
OFX files are structured hierarchically. The header defines the file version and encoding; the body contains account information and transaction records. Manual CSV-to-OFX conversion breaks most often in the header section or FITID generation.
| OFX Element | Purpose | Common Error in Manual Conversion | Zera Books |
|---|---|---|---|
| OFXHEADER | File version declaration | Wrong version string breaks parsing | Auto-generated correctly |
| BANKID | Bank routing number | Often left blank, fails strict validators | Extracted from statement data |
| ACCTID | Account number | Missing or incorrect | Auto-detected from CSV data |
| DTSTART/DTEND | Transaction date range | Hardcoded wrong, causes rejections | Calculated from actual transaction dates |
| FITID | Unique transaction ID | Sequential IDs collide on re-import | Hash-based, collision-resistant |
| TRNAMT | Signed transaction amount | Positive/negative signs incorrect | Unified from debit/credit columns |
How CSV to OFX Conversion Works
Upload your CSV file
Upload one file or a batch. Zera Books auto-detects column headers. If absent, confirm column assignments in a one-time review.
Data cleaning and validation
Dates normalized to YYYYMMDD. Debit/Credit columns consolidated to signed Amount. Special characters that break OFX parsing removed from descriptions.
AI categorization
Each transaction mapped to account categories compatible with your target accounting software. Review confidence scores and override where needed.
OFX file generation
Valid OFX generated with correct header, collision-resistant FITIDs, and DTSTART/DTEND range. Download and import into your accounting software.
Valid OFX from any CSV in minutes
Correct structure, collision-resistant FITIDs, AI categorization. Compatible with MYOB, Sage, QuickBooks, and more. $79/month unlimited.
Try for one weekOFX Software Compatibility
MYOB
MYOB AccountRight and Essentials accept OFX 1.x for bank statement import under Banking > Import Statement.
Sage
Sage 50 and Sage Business Cloud accept OFX for bank transaction imports. Zera Books exports Sage-compatible OFX with correct account structure.
QuickBooks
While QuickBooks prefers QBO, it also accepts OFX. Zera Books can export either format from the same CSV input.
International platforms
European, Australian, and Canadian accounting platforms that support OFX 2.x (XML) are compatible with Zera Books' output.
Frequently Asked Questions
What is OFX format and which software accepts it?
OFX (Open Financial Exchange) is an open standard for financial data exchange. Software that accepts OFX includes MYOB, Sage, Microsoft Money, and various European accounting platforms. QuickBooks uses QBO, a proprietary Intuit variant of OFX.
What is the difference between OFX and QBO?
QBO is Intuit's proprietary modification of OFX, specifically for QuickBooks. OFX works with a broader range of accounting software. The internal structure is very similar — the main difference is the file header and some Intuit-specific extensions in QBO.
Can I convert a CSV from any bank to OFX?
Yes. Zera Books accepts CSV files from any bank in any column layout. Date, amount, and description columns are auto-detected. Separate debit and credit columns are consolidated into a single signed amount field as OFX requires.
Does OFX conversion include transaction categorization?
Yes. Zera Books AI categorizes each transaction before generating the OFX file. You review and adjust suggested categories, then export. The OFX includes account code metadata compatible with your target software.