If you run a payroll company, the IRS FIRE shutdown on December 31, 2026 creates a problem that’s easy to misunderstand. Half of your filing workflow is fine. The other half needs to change – and the line between the two isn’t always obvious.
Here’s the short version: W-2 filing is unaffected. 1099 filing must move to IRIS. If your operation touches both sides – and most payroll companies do – you need a plan for the 1099 half before January.
The W-2 Side: Business as Usual
Let’s start with the good news. W-2 and W-2C filings go through the Social Security Administration’s Business Services Online (BSO) system. BSO is completely separate from FIRE. The FIRE shutdown does not affect BSO in any way.
If your payroll company files W-2s electronically – and you almost certainly do – that workflow continues unchanged. Same system, same file format, same process. No migration needed on the W-2 side.
The 1099 Side: Everything Changes
Here’s where it gets real. Most payroll companies don’t just process W-2s. You also handle 1099-NEC for independent contractors, 1099-MISC for various payments, and sometimes 1099-R for retirement distributions. All of those forms currently file through FIRE – and after December 31, 2026, FIRE is gone.
The replacement is IRIS (Information Returns Intake System), and it works fundamentally differently from FIRE:
This isn’t a minor version upgrade. FIRE and IRIS use completely different data formats. Your FIRE-format flat files cannot be uploaded to IRIS. Any automated pipeline you’ve built to generate Pub 1220 files for 1099 submission needs to either produce XML output or go through a conversion layer.
Why Payroll Companies Face a Unique Challenge
Generic businesses filing their own 1099s have it relatively simple: pick a new filing path and move on. Payroll companies have it harder because you’re filing for hundreds or thousands of clients, each with their own data, their own timelines, and their own expectations.
Volume and complexity
A payroll company handling 500 clients might process 50,000+ 1099-NEC forms in a filing season. At that volume, manual approaches (like the IRIS Taxpayer Portal) are out of the question. You need a system-to-system solution – either a direct IRIS API integration or a provider that handles the transmission.
Client expectations
Your clients are paying you to handle this. They don’t want to hear about IRS system transitions. They want their 1099s filed correctly and on time. If the transition causes delays, errors, or missed deadlines, that’s your problem – not theirs. This is non-negotiable.
The two-system reality
After the transition, payroll companies will operate across two separate filing systems: BSO for W-2s and IRIS for 1099s. Different formats, different authentication, different error handling, different correction processes. Your operations team needs to understand both.
Your Three Options for 1099 Filing
As a payroll company, you have the same three options every filer has – but the stakes and considerations differ at your volume.
Option 1: Build a direct IRIS integration
This means your systems generate IRIS-compliant XML, authenticate via OAuth, submit through the IRIS API, and handle acknowledgments and errors. If you have an in-house development team and plan to file tens of thousands of returns, this can make sense long-term. But be realistic about the timeline: TCC application (45 days), XML development (8-16 weeks), sandbox testing (2-4 weeks), and ongoing schema maintenance.
Option 2: Use the IRIS Taxpayer Portal
This is the IRS free web interface. For a payroll company filing thousands of returns, this is not a viable option. It’s designed for small businesses entering a handful of forms manually. We mention it only for completeness.
Option 3: Use a filing provider
Upload your data to a provider, they handle the IRIS transmission. This is the option that lets you keep your focus on payroll operations instead of IRS plumbing. The right provider handles format conversion, XML generation, TCC management, error handling, and corrections.
For payroll companies, Option 3 has a specific advantage: you can keep generating the same FIRE-format flat files you’ve been producing for years. BoomTax accepts Pub 1220 files and converts them to IRIS XML automatically. Your data export pipeline stays identical. The only change is where the file goes.
What About 1099-R and Other Information Returns?
Some payroll companies handle more than 1099-NEC and 1099-MISC. If you process retirement plans, you may file 1099-R. If you handle real estate transactions, there might be 1099-S. Insurance? 1099-INT or 1099-DIV.
All of these currently go through FIRE and all must move to IRIS. The same transition applies across every information return form type. When evaluating your migration plan, make sure you account for every form type you file – not just the most common ones.
The Corrections Question
Payroll companies know that corrections are a fact of life. A client enters the wrong TIN, an amount changes after year-end, a contractor’s name was misspelled. In FIRE, corrections used the same flat-file format with a corrected indicator flag. In IRIS, the correction process is different.
When planning your migration, don’t just plan for original filings. Your correction workflow needs to work through IRIS too. Test it. Make sure your team understands the process. Corrections happen in February and March – two months after FIRE is gone. If you haven’t tested corrections in IRIS by then, you’re going to have a problem with no fallback.
Migration Timeline for Payroll Companies
Payroll companies need more lead time than individual businesses because the stakes are higher and the complexity is greater. Here’s a recommended timeline:
- Now (July 2026): Make the build-vs-provider decision. If building, start TCC application immediately. If using a provider, begin evaluation.
- August: If using a provider, sign up and complete a test upload with realistic data. Confirm all your form types are supported. Verify the FIRE-format file upload works with your existing exports.
- September-October: Run a full parallel test. Submit a representative batch through your new workflow. Validate acknowledgments. Test error handling and corrections.
- November: Train your operations team on the new workflow. Update internal documentation. Communicate to clients that their 1099 filing is covered.
- December: Final readiness check. FIRE shuts down December 31.
- January 2027: File through IRIS. 1099-NEC forms due January 31.
How BoomTax Handles the Payroll Company Use Case
BoomTax was built for volume filers. Here’s specifically how it works for payroll companies:
- Keep your FIRE files: Upload the same Pub 1220 flat files your systems already generate. BoomTax converts to IRIS XML. Zero changes to your data pipeline.
- Bulk upload: Upload thousands of returns in a single file. No manual entry, no per-form clicking.
- All 1099 types: 1099-NEC, 1099-MISC, 1099-INT, 1099-DIV, 1099-R, 1099-B, 1099-S – every information return type is supported.
- Corrections included: File corrections through the same platform. No separate process, no additional setup.
- No TCC required: BoomTax files under our own TCC. You don’t need to apply for one or manage the credential lifecycle.
- Volume pricing: Per-form pricing with volume discounts. No platform fee, no subscription. Pricing scales with your filing volume.
For the complete integration guide, see our IRIS Filing Guide for Payroll Providers.
Frequently Asked Questions
Will BSO also change, or is it just FIRE?
Only FIRE is shutting down. BSO (Business Services Online), which handles W-2 filing with the Social Security Administration, is unchanged. Your W-2 filing workflow continues as-is. The FIRE shutdown affects only information returns (1099s, 1098s, etc.) filed with the IRS.
We already have a FIRE TCC. Does it work with IRIS?
No. FIRE and IRIS use separate TCC systems. A FIRE TCC does not grant access to IRIS. If you plan to file directly through IRIS, you need to apply for a new IRIS TCC. If you use a filing provider, the provider’s TCC covers your filings.
Can we file 1099s through IRIS and W-2s through BSO from the same platform?
BoomTax handles both. You can file 1099s through IRIS and W-2s through BSO using the same BoomTax account. One platform, two filing channels, both handled for you.
Our payroll software vendor says they handle 1099 filing. Do we need to worry?
Contact them directly and ask: “Are our 1099 filings going through IRIS?” If the answer is yes and they can demonstrate it, you’re covered. If the answer is “we’re working on it” or they can’t give a clear answer, start evaluating a backup plan now. January is not the time to discover your vendor isn’t ready.
What happens if we miss the January 31 1099-NEC deadline because of the transition?
The IRS doesn’t distinguish between “we missed the deadline because of the system change” and “we just missed the deadline.” Penalties apply per return: $60 if filed within 30 days, $130 within 6 months, $310 after that, and $660 for intentional disregard. For a payroll company filing thousands of returns, even a short delay can add up fast. The transition timeline is fixed – plan accordingly.
Don’t Let the 1099 Side Catch You Off Guard
For payroll companies, the FIRE shutdown is a split-screen situation. Half your filing world is stable. The other half is changing completely. The organizations that handle this well are the ones that treat the 1099 transition with the same seriousness as any major operational change – not as an afterthought to the W-2 workflow.
Start with the IRIS overview. Review the payroll provider guide. Then test with real data.
Create a free BoomTax account and upload a FIRE-format test file today. In 15 minutes, you’ll know your 1099 filing is covered – and you can focus on what your clients are actually paying you for.
BoomTax, The Boom Post, and its affiliates do not provide tax, legal or accounting advice. This material has been prepared for informational purposes only, and is not intended to provide, and should not be relied on for, tax, legal or accounting advice. You should consult your own tax, legal and accounting advisors prior to engaging in any transaction.
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