Free TIN, 1099 and IRIS Compliance Tools

Seven free, browser-based tools built on the same IRS rules we use in our managed service engagements. Check TINs and files before they go to the IRS, work a CP2100 or 972CG notice, and get a 1099 file through IRIS, in minutes, without sharing your data.

  • 100% client-side: your data never leaves your browser
  • No login, no account, no credit card
  • Built on IRS Publications 1281, 1586 and 1220, the IRIS rules and TIN matching rules
  • Export results as CSV, IRIS files or print-ready reports
Browse the tools When to get help Request a Risk Assessment

Seven free tools. No account required.

Built on IRS Publications 1281, 1586 and 1220, the IRIS business rules and the TIN matching rules. Everything runs in your browser; nothing is uploaded or stored.

This filing season: 1099s through IRIS

Start here

IRIS 1099 File Checker

Drop in your IRIS portal CSV or A2A XML. Every record is checked against the IRS business rules for its tax year, so nothing comes back "accepted with errors".

  • All 37 portal templates and A2A XML, tax years 2022 to 2026
  • Missing TINs, box arithmetic, indicator combinations, the 250-row and 100 MB limits
  • Marked file and summary to keep with the filing
The IRS has no test site for real data; this is the check before the one on record Open tool
FIRE stops Nov 19

Pub 1220 to IRIS Converter

Still have software that writes FIRE files? Drop one in: the converter reads the T, A and B records, detects the Pub 1220 edition, writes IRIS A2A XML and portal CSV, and checks the result.

  • Editions 2022 to 2025, 32 form types, every amount code mapped to its IRIS box
  • Shows the edition evidence and waits for you to confirm; stops on a conflict
  • Lists every field FIRE could not carry, record by record
Converted and checked against the IRIS rules Open tool

Before and after IRS TIN Matching

Before TIN Matching or an IRIS upload

TIN Format Validator

Paste a list of TINs and instantly flag wrong lengths, stripped leading zeros, non-numeric characters and SSN/EIN pattern mismatches. Checks the dash format for the IRS TIN Matching bulk file and IRIS A2A XML (no dashes) or the IRIS portal CSV (dashes required).

Catches IRS result Code 1 and Code 4 format errors before submission
Flags the usual culprit: Excel stripping leading zeros from TIN columns
Fixes dashes either way: strips them for TIN Matching and A2A XML, adds them for the IRIS portal CSV
First step before bulk TIN Matching or an IRIS portal CSV Open tool
Pre-submission check

IRS Bulk TIN File Validator

Upload your IRS bulk TIN matching submission file for a line-by-line pre-flight check. Catches every format issue that causes a rejection before it reaches the IRS.

  • Validates delimiters, TIN format, name length and illegal characters
  • Flags duplicate records and TIN type mismatches
  • Delivers a line-by-line report with a corrected export
Run this before every IRS submission Open tool
Post-matching analysis

IRS Bulk TIN Results Analyzer

Upload your IRS bulk TIN matching results file and get a full breakdown by result code, with payee-level action steps, a mismatch summary and an export ready for your remediation workflow.

  • Decodes every IRS result code (0 to 8) in plain English
  • Flags mismatches, missing TINs and invalid format errors by payee
  • Exports a prioritized remediation list: filter by code, name or account
Step 2 after bulk TIN matching returns results Open tool

When an IRS notice arrives

IRS Pub. 1281

CP2100 B-Notice Triage Tool

Upload your CP2100 extract and instantly classify every payee as a first or second B-Notice, with deadlines, action steps and backup withholding triggers.

  • Compares current and prior-year CP2100 files to tell first from second B-Notices
  • Calculates notice deadlines and backup withholding start dates
  • Exports a prioritized action list as CSV
Based on IRS Publication 1281 Open tool
IRS Pub. 1586

972CG Penalty Analyzer

Upload your 972CG extract, enter the notice details, and get deadlines, a W-9 solicitation letter and a draft abatement response grounded in the Pub. 1586 reasonable cause rules.

  • Calculates your 45-day response window and solicitation deadlines
  • Generates a draft abatement letter signed under penalties of perjury
  • Produces a W-9 solicitation packet letter for all affected payees
Based on IRS Publication 1586 Open tool

How the tools fit together

Most TIN and 1099 compliance work follows the same sequence. Each tool covers one stage.

1

Format check

Run TIN Format Validator on your vendor list before submitting anything to the IRS.

Open tool
2

Pre-flight

Run Bulk TIN File Validator on your submission file to catch structural errors.

Open tool
3

Analyze results

Feed IRS results into Bulk TIN Results Analyzer for a code-by-code plan.

Open tool
4

FIRE to IRIS

If your software still writes Pub 1220 files, convert one to IRIS XML or CSV.

Open tool
5

IRIS check

Check the IRIS CSV or XML against the IRS rules before you upload it.

Open tool
6

B-Notice triage

If a CP2100 arrives, classify every payee and get the deadlines instantly.

Open tool
7

Penalty response

If a 972CG arrives, build your abatement response and W-9 letters in minutes.

Open tool

When the free tools are not enough

The tools handle analysis and drafting. These are the situations where you will want hands-on execution support.

High payee volume

Sending W-9 packets to 500 or more vendors needs outreach tracking, reminders and a documented solicitation log, not just a letter template.

Full-Service W-9 Outreach

Tight notice deadlines

A 972CG gives you 45 days. If you are already behind, an abatement draft is not enough: you need the solicitations in the mail and documented, fast.

972CG Penalty Support

Repeat notices

If you see CP2100s or 972CGs year after year, the issue is process, not a one-time cleanup. We fix the root cause.

CP2100 & B-Notice Handling

Need more than a tool can do?

Send us your notice or vendor export and we will scope the fastest path to resolution, with a fixed-fee quote and no commitment.

Request a Risk Assessment View managed services

Questions people ask

Are the tools really free, and do I need an account?

Yes and no. Every tool on this page runs without an account, a login or a card. They exist because the same checks sit inside the TIN Comply platform; the free versions handle the part that needs no IRS connection, and a free account adds IRS TIN Matching when you want the name and TIN verified.

Is my payee data uploaded when I use a tool?

No. Each tool is JavaScript that runs in your browser. The file you drop in is read on your computer, the results are built there, and nothing is sent to TIN Comply or stored. You can run any of them with the network disconnected.

Which tool should I start with?

This season, with FIRE closing on November 19, 2026, start with the IRIS 1099 File Checker before you upload, or with the Pub 1220 converter if your software still writes FIRE files. Before IRS TIN Matching, run the TIN Format Validator and then the Bulk TIN File Validator; once the IRS answers, use the Results Analyzer. If a notice arrived, go to CP2100 B-Notice Triage or the 972CG Analyzer.

What IRS rules are the tools built on?

Publication 1281 (backup withholding and B-Notices), Publication 1586 (reasonable cause for TIN penalties), the IRS TIN Matching program rules and result codes, the IRIS business rules for tax years 2022 to 2026, and Publication 1220 editions 2022 to 2025 for FIRE files.

Can the tools verify a name and TIN with the IRS?

Not on their own; only the IRS TIN Matching service can, and it needs an authorized connection. The tools check everything that can be checked without it and count the pairs the IRS will test. A free TIN Comply account includes IRS TIN Matching, and bulk matching covers whole files.

Related reading on tincompliance.com: 37 calculators for the questions a file does not answer, 34 letter templates and the compliance calendar.