Validate a W-2G CSV and download the matching IRIS template.
Certain gambling winnings requires a consistent file structure. This free browser tool preselects Form W-2G and compares your CSV with the bundled W-2G layout while checking several common structural issues.
✓ Your W-2G CSV stays in your browserUse the validator as a first check, not the final filing decision.
For certain gambling winnings, the exact required fields and accepted values come from the current IRS IRIS formatting guidelines. This page helps catch common CSV structure problems before you spend time in the portal.
- ✓Check the W-2G header layout
- ✓Find rows with the wrong number of columns
- ✓Review tax year and TIN formatting warnings
- ✓Identify files above the current 250-record CSV file limit
Need more than a quick CSV check?
1099ERICH adds the Windows workflow for importing, validating, printing recipient copies, and creating IRIS-ready filing files for W-2G.
The bundled W-2G template contains 54 columns.
The free validator compares your header with that exact layout. In addition to payer/filer and recipient identity fields, the W-2G template includes form-specific columns such as:
- ✓Office Code
- ✓Box 1 - Reportable Winnings
- ✓Box 2 - Date Won
- ✓Box 3 - Type of Wager
- ✓Box 4 - Federal income tax withheld
- ✓Box 5 - Transaction
Use the current template
Start with the bundled CSV layout so column names and order are predictable, then enter or export your filing data into that structure.
Download W-2G CSV TemplateUse the error troubleshooter before rebuilding the CSV.
Separate portal behavior from file-formatting problems and follow the IRS-specific checks for the symptom you see.
Questions about the free W-2G validator
What does the free W-2G CSV validator check?
The tool compares the header with the bundled W-2G CSV template, checks that data rows have a consistent number of columns, warns about more than 250 records, and performs several common tax-year and TIN format checks.
Does my W-2G CSV leave my computer?
No. The validator runs in your browser. Your selected CSV is not uploaded to 1099ERICH.com.
Does passing the validator guarantee IRS acceptance?
No. It is a pre-check. The IRS applies the final validation and acceptance rules, and IRIS formatting can change by processing year.
What if my W-2G CSV has more than 250 records?
Use the free IRIS CSV splitter to create smaller files or submission batches, then validate the resulting CSV files before upload.
Compare related information returns before you validate.
Use the comparison center if two forms have similar names or report different sides of the same account or transaction.
Use the W-2G correction guide after validation.
The correction path depends on whether IRIS accepted or rejected the original transmission.
TIN or name mismatch?
Use the W-2G TIN guide for pre-filing cleanup, CP2100/CP2100A, B Notices, backup withholding, and TIN Matching notes.
Check the full W-2G filing workflow.
The readiness guide adds recipient timing, IRS deadlines, extension planning and acknowledgement follow-up to this CSV check.
Prepare Form W-2G in the full 1099ERICH desktop workflow.
The free W-2G resources help with individual checks. 1099ERICH handles the repeatable workflow: import CSV or Excel data, validate and re-import, print recipient copies, and create IRIS-ready CSV files.