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Validate your IIF files before importing into QuickBooks® Desktop. Catch errors before they cause problems — 100% browser-based.
!TRNSTRNSID TRNSTYPE DATE ACCNT AMOUNT!SPLSPLID TRNSTYPE DATE ACCNT AMOUNT!ENDTRNS0 Errors
file validated
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HOW IT WORKS
Drag & drop your IIF file. Supports .iif and .txt formats from any source.
See validation status, errors, warnings, and a readable preview of all transactions.
Fix any issues and import your validated IIF file into QuickBooks® Desktop with confidence.
WHY PRIMECONNECT
The IIF viewer accountants and bookkeepers trust
Your financial data is processed entirely in your browser. Nothing is uploaded to any server — ever. No tracking, no storage, no compromise.
IIF formats supported
Validation results in milliseconds
No premium tiers or trial limits
Headers, balances, dates, accounts
Works on any device, any browser
4.9 out of 5 — trusted by accountants and bookkeepers
IIF files use a specific structure that our validator checks thoroughly
!TRNSTransaction header line with column names!SPLSplit line header with column names!ENDTRNSMarks the end of a transaction blockTRNSMain transaction data rowSPLSplit line data (offsetting entry)ENDTRNSTransaction block terminatorOur validator recognizes all standard IIF transaction types
General journal entries for any debit/credit transaction
Check payments with optional check numbers
Bank deposits and incoming payments
Customer invoices and receivables
Vendor bills and payables
Bank-to-bank fund transfers
FAQ
Everything you need to know about IIF file validation. Can't find your answer? Reach out.
Contact SupportIIF (Intuit® Interchange Format) is a tab-delimited text file format used by QuickBooks® Desktop to import and export data. It supports various transaction types including checks, deposits, invoices, and journal entries.
Validating your IIF file before importing catches errors like missing ENDTRNS markers, unbalanced transactions, invalid dates, or missing account names. This prevents import failures and data corruption in your QuickBooks® company file.
Absolutely. All file processing happens locally in your browser using client-side JavaScript. Your IIF file is never uploaded to our servers — we don't see, store, or have access to any of your financial data.
Our validator checks for: missing or malformed headers (!TRNS, !SPL, !ENDTRNS), unbalanced transaction amounts, invalid date formats, missing required fields (ACCNT, TRNSTYPE), and structural issues that would cause QuickBooks® to reject the import.
Yes! IIF format is supported by QuickBooks® Desktop Pro, Premier, and Enterprise across all recent versions. Note that QuickBooks® Online does not support IIF imports — use QBO format for the online version.
Our validator provides specific error messages with line numbers and suggested fixes. Common issues include missing ENDTRNS tags, amounts that don't balance to zero, or invalid date formats. You can edit the file and re-validate until all issues are resolved.
Yes! Our viewer displays your transactions in a readable table format so you can review the data before importing into QuickBooks®. You'll see dates, amounts, accounts, memos, and transaction types clearly formatted.
Yes, 100% free with no limits. A free account is required to ensure fair usage and prevent automated abuse, but all tools remain 100% free. No credit card, no premium tiers. We built this tool to help small businesses and accountants save time and avoid costly import errors.
Looking for a reliable IIF file viewer to inspect your QuickBooks® import files? Our free tool lets you view IIF file contents in a readable format and validates the structure before importing into QuickBooks® Desktop. Catch errors before they cause problems.
Whether you created your IIF file manually, exported it from another system, or converted it using our CSV to IIF Converter or QBO to IIF Converter, our IIF validator ensures compatibility with QuickBooks® Desktop Pro, Premier, and Enterprise editions.
Don't risk corrupting your QuickBooks® company file with malformed data. Our IIF file checker examines every transaction for structural integrity, balanced amounts, and required fields. Validate IIF files in seconds with instant feedback on any issues found.
Common issues detected include missing ENDTRNS markers, transactions that don't balance, invalid date formats, and missing account references. Each error includes a suggested fix.
Our IIF reader displays your file contents in a clear, tabular format. See all your transactions with dates, amounts, accounts, and memos at a glance. This IIF file viewer online works entirely in your browser — no downloads required.
Review every transaction before committing to an import. Identify incorrect amounts, wrong dates, or mismatched accounts before they become accounting headaches.
The IIF File Viewer is part of our complete suite of free QuickBooks® conversion tools:
Our IIF validator performs comprehensive checks including: header validation (!TRNS, !SPL, !ENDTRNS structure), balance verification (debits equal credits), date format validation, required field checks, and QuickBooks® compatibility verification. Use the best free IIF file viewer today.
QuickBooks® is a registered trademark of Intuit Inc. This tool is not affiliated with, endorsed by, or sponsored by Intuit Inc. · Explore all free QuickBooks® utilities · Set up your Chart of Accounts · Clean messy bank exports with our Bank CSV Cleaner · For troubleshooting, visit LedgerClinic.
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