TIN Comply says it has released two free browser-based tools for businesses preparing 1099 information returns for the IRS Information Returns Intake System (IRIS): one checks IRIS-format files, and the other converts legacy FIRE files into IRIS formats. They address different stages of the transition, but neither replaces reviewing a return or completing the IRS filing process.
What TIN Comply’s two tools do
According to the company’s October 9, 2026 announcement, both tools are available at no charge through its tools page and do not require an account or login. The descriptions below are vendor-reported; the tools’ operation and security have not been independently tested.
| Tool | Input and output | What TIN Comply says it does |
|---|---|---|
| IRIS 1099 File Checker | IRIS Taxpayer Portal CSV files or A2A XML files | Checks records against IRS IRIS business rules for the relevant year, the A2A schema, or portal template formatting, then reports errors and possible fixes. TIN Comply says it supports tax years 2022–2026. It also says the checker flags a 250-row portal upload limit and A2A’s 100 MB transmission limit; the row limit is a vendor product specification. |
| Pub 1220 to IRIS Converter | Legacy FIRE files based on Pub 1220 editions 2022–2025; IRIS A2A XML and portal CSV output | Detects the file edition from its records and asks the user to confirm it. The company says it stops rather than guessing if the evidence conflicts, checks the output, and reports field-mapping judgments and fields without a direct counterpart. |
The checker is for a file that is already in an IRIS format. The converter is for a legacy FIRE-format file that needs to be moved into an IRIS format. TIN Comply describes converter output as “converted and checked, never as ready to file,” so users still need to review the records and submit through the applicable IRS filing route.
Why FIRE users need to plan for IRIS
The IRS says FIRE submissions will end on November 19, 2026, at 3 p.m. Eastern Time. It also says current FIRE users must transition to IRIS for tax-year 2026 information returns during the 2027 filing season. These are IRS transition dates, not TIN Comply product deadlines. See IRS notice IR-2026-99.
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For filing through IRIS, the IRS describes two routes: the Taxpayer Portal and Application to Application (A2A). The Taxpayer Portal is a free online option for information returns for tax year 2022 or later, and IRS Topic 801 says portal use requires no special software. A2A supports transmissions up to 100 MB, but requires more preparation. IRS guidance says A2A users must apply for an IRIS A2A Transmitter Control Code, obtain an API Client ID and schema package, and complete Assurance Testing System transmissions before production filing. Details are in the IRS IRIS filing guidance and IRS Topic 801.
The IRS says electronic filing is required for filers submitting 10 or more information returns for tax years beginning in 2023. Its explanation includes Forms W-2, which are filed with the Social Security Administration, so the threshold should not be read as applying only to 1099 forms. Check the IRS instructions for the rule and its application to your filing situation.
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How to decide whether a tool fits your workflow
If you already have an IRIS CSV or XML file
The IRIS 1099 File Checker is the tool TIN Comply says is designed for that stage. Choose the matching input type and tax year, then examine each reported issue against the actual records and the current IRS requirements. A checker report can help identify formatting or rule problems, but it is not proof that the return is complete, accurate, accepted, or filed.
If your records are in FIRE Pub 1220 format
The Pub 1220 to IRIS Converter is intended to create an IRIS portal CSV or A2A XML file from supported legacy formats. TIN Comply says it supports Pub 1220 editions 2022–2025 and asks users to confirm its detected edition. Review the resulting mappings and any fields the tool identifies as lacking a direct counterpart. The company explicitly says the output is not ready to file without further review.
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If you are setting up A2A
A2A is not simply a different file extension. It involves IRS access credentials, a schema package, and testing before production transmissions. The IRS lists a 100 MB maximum transmission size. Check the current IRS schema package and business rules for the relevant tax year before relying on any tool’s validation coverage.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Check the current IRS requirements before filing
IRIS schemas and business rules are versioned and can change. The IRS schema index lists tax-year 2026 v1.2 as available in the Secure Object Repository on September 24, 2026, with production in January 2027; the IRS notes that versions and business rules may coexist and that schema packages can be updated. Use the IRS schema and business-rules index to identify the release that applies to your filing. A checker’s claimed support for a tax year does not, by itself, establish that it reflects the latest IRS release.
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What the browser-based privacy claim means
TIN Comply says the tools run JavaScript in the user’s browser, read files on the user’s computer, and do not upload or store those files. Those are claims in the company’s announcement, not independent security findings. Before processing taxpayer data, review the live tool’s privacy information and decide whether its stated handling meets your organization’s requirements.
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