How to file information returns through the IRS IRIS Taxpayer Portal.

The IRS IRIS Taxpayer Portal is the IRS web-based system for electronically filing many information returns. For businesses and preparers working from spreadsheets or accounting exports, the practical challenge is usually not finding the portal—it is getting the source data into the exact structure needed for a clean upload. This guide explains the workflow and how 1099ERICH is designed to help prepare that data before it reaches the IRS.

What is the IRS IRIS Taxpayer Portal?

IRIS stands for Information Returns Intake System. The IRS provides the Taxpayer Portal as a no-cost online option for filing supported information returns. Filers can enter forms in the portal or upload CSV files. The portal is separate from 1099ERICH: 1099ERICH prepares and checks the data locally, and the filer then uploads the final files to the IRS.

For Processing Year 2026, the IRS lists a broad set of supported forms, including Forms 1097-BTC, the 1098 and 1099 series, Forms 3921 and 3922, the 5498 series, and W-2G. Always verify the exact tax year and current IRS form list before filing.

What do you need before you can file in IRIS?

The IRS states that organizations using the Taxpayer Portal need an approved IRIS Transmitter Control Code (TCC). The TCC identifies the business for IRIS filing. Because application review can take time, it is better to obtain access before the filing deadline rather than waiting until the returns are ready.

See our IRIS access and TCC guide for the basic setup steps and official IRS links.

How do CSV uploads work?

The IRS publishes CSV template formatting guidelines for each supported form. Under the current Processing Year 2026 user guide, a CSV upload file can contain up to 250 forms. The portal then has its own submission workflow, so filers should follow the current IRS instructions for reviewing and submitting uploaded records.

That makes data preparation important. A single malformed value, missing required field, or inconsistent source column can create extra correction work. 1099ERICH is designed to keep the working spreadsheet or CSV on your Windows PC while you import, review, correct, and regenerate the final upload files.

Where 1099ERICH fits in the IRIS workflow

1. Start with an IRS-style CSV or Excel layout. Use the free templates or prepare your source file in the supported structure.
2. Import the data into 1099ERICH. Work from the same controlled source file instead of retyping each recipient into a separate system.
3. Validate the imported records. Review missing fields and formatting issues before you create final filing files.
4. Print recipient copies. Use the same reviewed data for recipient output.
5. Create IRIS upload files. Generate the CSV output used in the IRS portal workflow.
6. Upload through your IRIS account. Sign in to the IRS Taxpayer Portal and follow the current IRS steps to upload, review, and submit.

Does 1099ERICH send returns directly to the IRS?

No. The standard 1099ERICH workflow is intentionally local. The software prepares the source data and creates the upload files; you submit those files through the IRS IRIS Taxpayer Portal using your own access. A separate assisted filing service is available for customers who need help with the upload process.

Why use desktop software if the IRS portal is free?

The IRS portal is the filing destination. Desktop software can be useful earlier in the process when you already have payer and recipient data in spreadsheets or exported files and want a repeatable way to import, validate, print, and prepare upload files without re-entering the same information one form at a time.

This is especially useful for organizations preparing larger batches or multiple form types, where consistent source data and repeatable validation can save time.

Popular IRIS filing resources

Current IRS IRIS details can change. Verify portal requirements, supported forms, TCC instructions and CSV formatting at IRS.gov and in IRS Publication 5717 before filing.