Free tools for information-return filers

Check your files before you open the IRS IRIS Portal.

Use free browser tools to validate CSV structure, clean TIN/name data, respond to CP2100/CP2100A notices, troubleshoot IRIS errors, plan corrections, download templates, compare forms, and review filing setup.

✓ CSV tools run locally in your browser

Use the free tools first

Free tools solve one filing problem. 1099ERICH handles the whole workflow.

You do not need to buy software just to use these resources. If a one-off validator, deadline tool, correction guide, or W-9 checker solves the problem, keep using it. When you need a repeatable production workflow, the desktop software picks up where the free tools stop.

Free on 1099ERICH.com

Check, diagnose and plan

Validate CSV structure
Download form templates
Troubleshoot IRIS errors
Review corrections and deadlines
Clean up W-9 / TIN data

Keep using free tools

1099ERICH Windows software · $299

Prepare the filing from source data to IRIS-ready export

Import CSV or Excel data
Validate, correct and re-import
Print masked recipient copies
Create IRIS-ready CSV files
Keep the workflow on your Windows PC

See the Software Purchase Details — $299

TIN

TIN / CP2100 Center

Pre-filing cleanup, CP2100/CP2100A response, B Notices, backup withholding, and IRS TIN Matching.

Open TIN center →✓

Pre-Filing TIN Cleanup

Scan a CSV locally for malformed TINs, scientific notation, blank names, whitespace, and inconsistent name/TIN data.

Check a CSV →CP

CP2100 / CP2100A Helper

Choose the mismatch type and notice history to see the B Notice or withholding path to review.

Open helper →↺

IRIS Correction Center

Correct accepted returns, recover rejected transmissions, and use form-specific correction workflows.

Open correction center →PATH

Correction Helper

Choose the IRIS status and error type to see the correction or recovery path to review.

Find the right path →WHO

Who Might Need to File?

Choose your organization type and see information returns commonly worth reviewing.

Find forms by filer type →15

Filer Guide Center

Guides for small businesses, accountants, banks, schools, brokers, custodians, real estate, insurers, employers, and more.

Browse filer guides →VS

Form Comparison Center

Compare commonly confused information returns and jump to the matching templates, validators, and software pages.

Compare forms →↔

Compare Any Two Forms

Select any two supported forms and compare their reporting focus, template size, and preparation resources side by side.

Open comparison tool →!

IRIS CSV Error Troubleshooter

Choose the portal or CSV problem you see and get a focused troubleshooting plan.

Troubleshoot an error →35

Form-Specific CSV Error Guides

Diagnose CSV problems using the exact layout and fields for each supported information return.

Choose a form → ✓

Free IRIS CSV Validator

Compare your CSV structure with the bundled form template and find common structural or formatting problems.

Validate a CSV → 250

Free IRIS CSV Splitter

Split one CSV into adjustable batches up to 250 records while preserving the header row.

Split a CSV → ?

Which Form Do I Need?

Choose what you are reporting and see a likely IRS information return to review.

Find a form → 31

Deadline Calculator

Check the general federal e-file and recipient statement dates for supported information returns.

Check a deadline → TCC

IRIS TCC Readiness Checker

Review the practical setup items you need before uploading through the IRS IRIS Taxpayer Portal.

Check readiness → CSV

IRIS CSV & Excel Template Library

Search the supported forms and download the matching CSV or Excel layout with a direct validator link.

Browse template library →Aa

CSV Formatting Checklist

Review UTF-8 saving, text-formatted identifiers, header structure, and other pre-upload formatting steps.

Run the checklist →

New troubleshooting library

See CSV error checks for the exact form you are filing.

Each guide highlights the form-specific columns most likely to deserve review after spreadsheet export.

Browse 35 Error Guides General Troubleshooter

Form-specific validators

Validate the form you actually prepare.

Each dedicated page opens the same private browser validator with that form selected and links to its matching software and CSV template.

Need the full workflow?

Move from a free check to import, validation, printing, and IRIS file preparation.

1099ERICH is the Windows desktop workflow for larger or repeated filing work.

Buy 1099ERICH — $299 Software Coming Soon

New: personalized filing calendar

Turn 35 possible deadlines into your own filing plan.

Select only the forms you file, download an ICS calendar, track the work in a deadline dashboard, or print a year-end organizer.

ICS

New: 2026 filing-season tools

Know what is due before January turns into a deadline emergency.

Check filing readiness, recipient statement timing, extensions, late-filing recovery, and form-specific preparation for all 35 supported returns.

2026

New: W-9 & vendor onboarding

Fix payee records before filing season.

Collect, track and clean vendor information before it becomes a missing-TIN or CP2100 problem.

W-9