By Adham Abadier, CPA — Licensed in California, License #158599
If you transmit 1099s to contractors, interest statements to lenders, or other information returns, this is not a 2027 problem — the IRS FIRE system retirement switch to IRIS is already underway, and the IRS is telling filers to prepare now. At Catalyst CPA Corporation, we build deadlines like these into our tax planning for Moreno Valley small businesses, because a missed transmitter cutoff in November becomes a January filing scramble. Here is the timeline, who must act, and a step-by-step switch plan for the Inland Empire.
The IRS FIRE system retirement switch to IRIS is now the defining e-filing deadline of Q4. Per IRS reminder IR-2026-99, current FIRE users must transition to the Information Returns Intake System (IRIS) to file tax year 2026 information returns during the 2027 filing season — and Nov. 19, 2026, at 3 p.m. ET is the last day to file through FIRE.
⚠️ October 15 extended-return deadline — date reminder
Extended federal returns are due Oct. 15, 2026 — including individual Form 1040, C-corporation Form 1120, and FBAR (FinCEN 114) on auto-extension. Late filing can trigger a 5%-per-month penalty, up to 25%, under §6651(a)(1) (IRS).
Key Takeaways
- The FIRE system is scheduled to retire at the end of Filing Season 2026; after Jan. 1, 2027, IRIS is the only information returns electronic filing system — including current-year, prior-year, and corrected returns.
- Nov. 19, 2026, at 3 p.m. ET is the last day to file information returns through FIRE; Nov. 1 is the last day for test files, and Nov. 9 is the last day to make changes to IR Applications for TCCs.
- The IRS is no longer accepting new FIRE TCC applications; existing applications can be updated through December 2026, then become read-only and are retained for historical reference.
- Every IRIS filer needs an IRIS-specific TCC — existing FIRE TCCs do not carry over, and processing can take up to 45 business days.
- The free IRIS Taxpayer Portal e-files up to 100 returns at a time; larger volumes go through IRIS Application to Application.
- IRIS Working Group meetings run the second Wednesday of each month, and IRIS QuickAlerts subscribers receive transition updates first.
IRS FIRE System Retirement Switch to IRIS: Key Dates
In an Aug. 24, 2026 newsroom reminder (IR-2026-99), the IRS told information return filers exactly what is coming: after the November maintenance window, filers will no longer be able to submit information returns through FIRE, and current FIRE users must transition to IRIS to file tax year 2026 information returns during the 2027 filing season. The FIRE login page carries the same warning — the system is scheduled to retire at the end of Filing Season 2026 (fire.irs.gov).
The three November 2026 deadlines
- Nov. 1, 2026: last day to file test information returns through the FIRE Trading Partner Test System.
- Nov. 9, 2026: last day to make changes to Information Returns (IR) Applications for Transmitter Control Codes (TCCs).
- Nov. 19, 2026, at 3 p.m. ET: last day to file information returns through the FIRE system.
What happens after November
Once that window closes, FIRE submissions end. Existing IR Application for TCC records can still be updated through December 2026; after that, they become read-only and are retained for historical reference. IRIS itself is not new — it became available in 2023 as part of a phased transition of forms from FIRE — and beginning in 2027, all forms previously supported by FIRE will be available through IRIS. Practically, that means any organization that has not transitioned by then will be unable to e-file information returns at all.
Who Must Act — and Who Is Already Locked Out of FIRE
Current FIRE TCC holders
If you transmit through FIRE today, the instruction is explicit: complete an IRIS Application for TCC and transition to IRIS to file tax year 2026 returns during the 2027 filing season. Treat it as a new application, not a renewal — filer guidance from Tab Service Company notes that every organization filing through IRIS must obtain an IRIS-specific TCC and that existing FIRE TCCs cannot be used with IRIS. Applications run through IRS e-Services, require individual authentication (SSN or ITIN) plus business and contact details, and processing can take up to 45 business days.
Businesses without any TCC
As of the IRS’s current FIRE guidance, new IR Applications for FIRE TCCs are no longer being accepted. The path forward is to file through IRIS directly — the free, web-based Taxpayer Portal — or through a third-party transmitter. Either way, the setup work belongs on your 2026 calendar, not your 2027 one.
Filing 1099s for vendors, contractors, or lenders this January? The FIRE exit ramps close Nov. 19, 2026, and IRIS applications take weeks to process — so the switch belongs on your October calendar, not your January panic list. Adham Abadier, CPA, will map your return inventory and TCC plan with you.
📞 (951) 223-1826 | Book a free 30-min diagnostic →
How to Switch to IRIS: A Five-Step Q4 Checklist
IR-2026-99 lists the preparation steps, and filer guidance fills in the mechanics. In order for a small-business filer:
- Complete an IRIS Application for TCC. This gates everything else — no IRIS TCC, no IRIS filing. Given the processing time, submit it now rather than alongside your January filings.
- Choose your filing channel. The IRIS Taxpayer Portal is free and web-based, handling up to 100 returns at a time — key information manually or upload a CSV file, download payee copies, and maintain records of completed and filed forms. Higher-volume filers using third-party or self-developed software take the IRIS Application to Application (A2A) route.
- Test before you transmit. A2A and vendor-software filers should complete successful test transmissions through the IRIS Assurance Testing System (ATS) — submit formatted test files, resolve any errors, and confirm acceptance well before deadline week.
- Work the IRS guidance pages. IR-2026-99 points filers to E-file Information Returns with IRIS, and Publication 5911 is the IRS tutorial for the IR Application for TCC.
- Plug into the update stream. Subscribe to IRIS QuickAlerts for system-change and maintenance notices, and register monthly for the IRIS Working Group meetings held the second Wednesday of each month — participants must register every month to receive the link.
Keep one more date handy: anything you still must submit through FIRE this year — a prior-year correction, for example — has to land by Nov. 19, 2026, at 3 p.m. ET. For FIRE account questions, the IRS Technical Services Operation line (866-455-7438, weekdays 8:30 a.m.–5:30 p.m. EST) remains staffed.
FIRE vs. IRIS: What Actually Changes for Filers
IRIS receives information returns through two channels — the Taxpayer Portal and Application to Application — and the differences from FIRE go beyond the login screen:
| FIRE (through Nov. 19, 2026) | IRIS (2027 filing season onward) | |
|---|---|---|
| Status | Scheduled to retire at the end of Filing Season 2026; last filings Nov. 19, 2026, at 3 p.m. ET | Only information returns e-filing system after Jan. 1, 2027 — current year, prior year, and corrections included |
| New TCCs | Closed; existing applications updatable through December 2026, then read-only | Open — complete the IRIS Application for TCC; FIRE TCCs do not transfer |
| Channels | FIRE production system login | Free Taxpayer Portal plus Application to Application for larger volumes |
| Data format | ASCII format based on Publication 1220 specifications | XML, with more granular fields such as separate first-name and last-name entries |
| Error feedback | Errors generally surface after processing | Real-time validation at submission |
Dates and system status per IRS.gov and fire.irs.gov; format and validation details per Tab Service Company’s transition guide.
Two edge cases are worth flagging. Golden Parachute payments can no longer be filed through FIRE at all — current- or prior-year amounts must go through IRIS or on paper. And the Affordable Care Act Information Return (AIR) system, which carries forms 1095-B and 1095-C, does not yet have a published retirement date, though the IRS has indicated intentions to eventually consolidate all information return filing into IRIS.
What Inland Empire Business Owners Should Do Before Q4 Closes
For the warehouse and logistics operators around Moreno Valley and Riverside, the contractors bidding jobs across San Bernardino and Fontana, and the professional firms in Temecula and Corona, information returns are a volume business — many operations owe 1099-NECs to dozens of subcontractors and vendors. A platform change lands differently at that scale, and Q4 is when payee data gets fixed cheaply.
Three moves keep the transition boring. First, pull your 2026 payee list now and reconcile it against what your accounting system actually holds — clean payee records are the raw material of every 1099, and keeping them current month to month is exactly what our bookkeeping services in Moreno Valley are built for. Contractors who track vendors job by job can fold the workflow into their construction bookkeeping instead of maintaining a parallel spreadsheet. Second, decide your channel: filers within the portal’s batch size can run the whole season there, while larger or software-driven filers should start A2A and ATS testing early. Third, calendar the three November dates with a one-week reminder on each.
Frequently Asked Questions
What is the IRS FIRE system retirement switch to IRIS?
It is the IRS’s planned shutdown of the Filing Information Returns Electronically (FIRE) system and the move of electronic information-return filing to the Information Returns Intake System (IRIS). The last FIRE submissions happen by Nov. 19, 2026, at 3 p.m. ET; after Jan. 1, 2027, IRIS is the only e-filing system for current-year, prior-year, and corrected information returns.
Do I need a new TCC for IRIS if I already have a FIRE TCC?
Yes. Current FIRE users must complete an IRIS Application for TCC to file tax year 2026 information returns during the 2027 filing season, and filer guidance confirms existing FIRE TCCs cannot be used with IRIS. The processing time makes early fall the right moment to apply.
What are the final FIRE filing dates?
Three, per the IRS: Nov. 1, 2026, the last day for test files through the FIRE Trading Partner Test System; Nov. 9, 2026, the last day to make changes to IR Applications for TCCs; and Nov. 19, 2026, at 3 p.m. ET, the last day to file information returns through FIRE.
Is the IRIS Taxpayer Portal free, and how many returns can it handle?
It is a free, web-based system that lets filers e-file up to 100 returns at a time. You can enter information manually or upload a CSV file, download payee copies, and maintain records of completed and filed forms. Higher volumes belong in IRIS Application to Application.
Can I still file corrections or prior-year returns after FIRE retires?
Yes — through IRIS. The IRS states that after Jan. 1, 2027, IRIS handles current-year, prior-year, and corrected information returns, and that beginning in 2027 all forms previously supported by FIRE will be available through IRIS.
What about ACA forms 1095-B and 1095-C, or Golden Parachute payments?
Filer guidance flags both: the ACA Information Return (AIR) system does not yet have a published retirement date, while Golden Parachute payments can no longer be filed through FIRE — they must go through IRIS or on paper.
How do I stay current on the transition?
Subscribe to IRIS QuickAlerts for notices about system changes, maintenance, and working group meetings, and register monthly for the IRIS Working Group meetings held the second Wednesday of each month. The IRS will continue sharing updates through IRIS QuickAlerts, the working group meetings, and IRS.gov.
FREE FOR INLAND EMPIRE BUSINESS OWNERS
Free Tax Optimization Audit
In a 30-minute call, Adham personally reviews your information-return setup — payee data, TCC status, portal-versus-A2A fit — alongside your Q4 estimated-tax position and year-end deduction timing, so the FIRE-to-IRIS switch and your 2026 tax plan land together instead of colliding in January.
The Bottom Line Before the November Cutoff
The mechanics of this switch are not hard — the calendar is, and it is public. Filers who complete an IRIS Application for TCC this fall, choose the right channel, and test early will e-file tax year 2026 returns in January without drama; filers who wait will meet the Nov. 19, 2026, 3 p.m. ET wall. Catalyst CPA Corporation works with owners across Moreno Valley, Riverside, Corona, and the wider Inland Empire — call Adham Abadier, CPA, at (951) 223-1826, or book the free diagnostic above and bring your vendor list.
And if you would rather deadlines like this never surprise you again, that is exactly what year-round tax planning for Inland Empire businesses is for — one October conversation beats a January scramble.
About the Author
Disclaimer
This article is provided for general informational purposes only and does not constitute tax, legal, or accounting advice for any specific situation. IRS systems, deadlines, and procedures can change; verify current requirements with the IRS and your licensed tax professional before acting on anything described here. Reading this post does not create a CPA-client relationship. Catalyst CPA Corporation · 13114 Yellowwood St, Moreno Valley, CA 92553 · (951) 223-1826
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