Three of my retail clients still run QuickBooks Desktop Pro and refuse to switch to Online. I export their Square POS transactions weekly, convert to IIF format, and import into each company file. The automatic ASCII encoding and 41-character name truncation prevent the import errors I used to get with manual data entry.
Square to QuickBooks Desktop (IIF Format)
or drop files here .csv, .xls, .xlsx, .xlsm (up to 50 MB)
Free 5-row preview · No sign-up required
Invoice import blocked if Sales Tax enabled in QBO
Convert Complete
Your converted file is ready!
Download now before closing this page
QuickBooks Desktop IIF Format
Showing valid rows only (download includes all rows + errors)
All rows valid
| $ |
|---|
+ more rows
valid rows
invalid rows skipped from preview
credits
| Row | Column | Value | Error |
|---|---|---|---|
Showing first 50 errors. more errors not shown.
more errors hidden. Download the full validation report to see all errors.
Validation Report Download
The download includes your original file with an added "Validation Error" column showing error messages for each row. Valid rows have an empty error column.
• credits
Use credits to download
Click any download button to use your credits
- Full CSV & Excel export
- Google Sheets export
- Instant browser download
for credits
One-time payment
256-bit SSL encryption
14-day money-back guarantee
PCI DSS compliant
Powered by Paddle
Want to save on credits?
Buy bundles and get up to 27% off. Perfect for recurring monthly conversions.
Liked the preview?
Upload your actual file to get the real conversion
Convert Square POS transactions to IIF format for QuickBooks Pro, Premier, and Enterprise Desktop editions.
Free preview — then from $5. Save with bundles.
Free preview before you pay
Files never leave your browser
No account needed to start
How to Convert Square → QBD IIF
1
Export from Square
Dashboard → Reporting → Transactions → Export CSV
2
Upload and Configure
Upload Transactions Export CSV and choose IIF File format
3
Preview and Download
Review converted data, download Quickbooks Desktop-ready file
4
Import to QuickBooks Desktop
File → Utilities → Import → IIF Files → Select File
Output is in QuickBooks Desktop IIF format — ready to import directly, no manual reformatting needed.
How People Use Square → QBD IIF
My restaurant processes everything through Square but our accountant uses QuickBooks Desktop Enterprise. I export transactions monthly and convert them to IIF with tips and tax on separate split lines. The deposit account mapping to Undeposited Funds matches exactly how our accountant reconciles the books.
Several clients use Square for payment processing but need their data in QuickBooks Desktop. There is no native Square-to-Desktop integration, so I convert their transaction exports to IIF files and import them during monthly close. The unique SQ reference numbers on each transaction help me catch duplicates before they hit the ledger.
Square → QBD IIF Conversion Questions
Which QuickBooks Desktop versions are supported?
Pro, Premier, and Enterprise editions from 2020 to 2025. IIF format is supported in all Desktop versions.
What accounts do I need to create first?
All accounts in the IIF must exist in your Chart of Accounts before import. Create: deposit account, sales income, tips income, and sales tax payable.
What data transfers from Square to QuickBooks Desktop?
Sales data, fees, taxes, tips, and discounts transfer daily. Data is summarized into a single daily invoice for easy bank reconciliation.
Why Use the Square → QBD IIF Converter?
Desktop-Ready IIF
Valid IIF format that QuickBooks Desktop accepts without errors.
Cash Sale Transactions
Transactions imported as Cash Sales with proper split lines.
Tax & Tips Separation
Separate split lines for tips and sales tax.
Customer Name Handling
Customer names truncated to Desktop's 41-character limit.
ASCII Encoding
Proper ASCII encoding required by QuickBooks Desktop.
No Monthly Fee
Pay-per-use pricing. No subscription required.
The Desktop Gap
No Native Square-Desktop Integration
Square doesn't offer a direct QuickBooks Desktop integration.
Most accounting apps (A2X, Synder) only support QuickBooks Online.
Desktop users are left with manual data entry or expensive middleware.
IIF: The Desktop Import Format
QuickBooks Desktop accepts IIF (Intuit Interchange Format) files.
IIF is a tab-delimited format with specific headers (TRNS, SPL, ENDTRNS).
We convert your Square transactions to valid IIF files that Desktop accepts.
Field Mapping
How Square Transactions fields map to Quickbooks Desktop Iif
| Square Transactions | Source Value | Quickbooks Desktop Iif | Target Value | Note | |
|---|---|---|---|---|---|
Transaction ID |
abc123def456 |
→ | DOCNUM |
abc123def456
|
Transaction ID as document number |
Date |
2026-01-15 |
→ | DATE |
2026-01-15
|
Transaction date MM/DD/YYYY |
Customer Name |
John Smith |
→ | NAME |
John Smith
|
Customer name (max 41 chars) |
Total Collected |
102.20 |
→ | AMOUNT |
102.20
|
Transaction amount (TRNS) |
Gross Sales |
100.00 |
→ | AMOUNT (SPL) |
|
Product sales to income account |
Tax |
7.20 |
→ | AMOUNT (SPL) |
|
Tax to Sales Tax Payable |
Tip |
5.00 |
→ | AMOUNT (SPL) |
|
Tips to Tips Income |
Fees |
-2.90 |
→ | AMOUNT (SPL) |
|
Fees as expense (ABS of negative) |
Your Square → QBD IIF Conversion is Secure
Browser-Only Processing
All conversion runs in your browser. Files are never uploaded to any server.
No Data Retention
Nothing is stored after conversion. Close the tab and your data is gone.
GDPR Compliant
Full EU data protection compliance. Your privacy rights are fully protected.
Data Transformation
Each Square transaction expands to IIF TRNS/SPL rows
Input
Square Transaction
One row per payment transaction
Key columns:
Transaction ID,
Date,
Total Collected,
Fees
1:N — One input row creates multiple output rows
Output
IIF Transaction Block
3-6 rows per
input
TRNS header + SPL splits + ENDTRNS
HDR
TRNS
Transaction header: debit to deposit account
CR
SPL (Sales)
Split: credit to Sales Income (negative)
CR
SPL (Tax)
Split: credit to Sales Tax Payable
CR
SPL (Tips)
Split: credit to Tips Income
DR
SPL (Fees)
Split: debit to Fees Expense (positive)
ENDTRNS
End of transaction marker
TRNS amount = sum of SPL amounts
Common IIF File Import Errors
Issues you might encounter when importing Transactions Export data to IIF File - and how we solve them
Account Not Found in Chart
QuickBooks Desktop requires exact account name matches
Account: 'Square Sales' (not in your Chart)
Account: 'Sales Income' (matches your Chart)
Configure account names to match your QuickBooks Desktop setup
Check File → Chart of Accounts and update settings
Square Uses Negative Fees
Square exports fees as negative (e.g., -$3.22)
Fees: -$3.22
Fees SPL: $3.22 (positive expense)
Fees are converted to positive for expense tracking
Automatic conversion using ABS()
Customer Name Too Long
QuickBooks Desktop limits names to 41 characters
Long Customer Name With Extra Details...
Long Customer Name With Extra...
Customer names are truncated to 41 characters
Names are automatically shortened
More credits - more savings
Buy bundles and get up to 60% off. Perfect for recurring monthly conversions.
Frequently Asked Questions
You can, but free scripts and AI often miss edge cases that break real-world data: missing SKUs, currency formatting quirks, tax calculation errors, or date format mismatches. We have battle-tested validators specifically designed for accounting software imports that catch these issues before they corrupt your books. Plus, you get instant browser-based conversion without installing Python or managing dependencies.
Pro, Premier, and Enterprise editions from 2020 to 2025. IIF format is supported in all Desktop versions.
Yes. QuickBooks Desktop requires admin login and single-user mode for IIF imports.
All accounts in the IIF must exist in your Chart of Accounts before import. Create: deposit account, sales income, tips income, and sales tax payable.
QuickBooks Desktop limits customer names to 41 characters (vs 100 in Online). Names are automatically shortened to fit.
Yes, but be careful of duplicates. Each transaction gets a unique reference number (SQ-xxx) to help identify duplicates.
Check that all account names exist in your Chart of Accounts. Account names must match exactly. QuickBooks Desktop is case-sensitive.
Sales data, fees, taxes, tips, and discounts transfer daily. Data is summarized into a single daily invoice for easy bank reconciliation.
Yes, always backup before importing IIF files. Go to File → Back Up Company → Create Local Backup. IIF imports cannot be easily undone.
Square POS doesn't automatically export inventory to QuickBooks. Export your Square inventory list as CSV and manually import it into QB separately.
Only one Square account can connect with QuickBooks Desktop at a time. Locations must be synced individually or use separate company files.
Square → Quickbooks Desktop Data Ecosystem
All available data flows from Square to Quickbooks Desktop
🥦
Quick question before you go
Help us improve—what stopped you today?
🎉
Thank you!
Enter your email to claim your welcome bonus