For many healthcare payers, FIRE has been part of the filing routine for years. It is familiar, it is established, and for teams that have built their year-end process around it, it can feel easier to stay with what already works.

That window is closing.

The IRS has set tax year 2026, filed during filing season 2027, as the target for retirement of the FIRE system. After that, IRIS is expected to be the only intake system for information returns currently received through FIRE. That makes this more than a technology update. It is a filing transition with real operational consequences for organizations that wait too long to prepare.

For payer teams, the risk is not only missing a technical detail. The bigger risk is treating this like a future problem and discovering too late that the move to IRIS touches more than one step in the process. It affects filing method, system readiness, authorization, workflow design, internal ownership, and the timeline for getting ready before filing season pressure arrives.

The good news is that this does not need to become a fire drill.

The organizations that handle this well will not be the ones that react fastest in late 2026. They will be the ones that start earlier, ask the right operational questions, and make the transition before the deadline starts carrying all the pressure.

FIRE is being retired, and that changes the planning calendar

The first thing payer teams need to understand is simple: this is no longer a vague future shift.

The transition from FIRE to IRIS has a real timeline behind it. FIRE is targeted for retirement with tax year 2026 returns filed in filing season 2027. For organizations that currently depend on FIRE, that means the work of preparing for IRIS should not be treated like a last-minute filing-season task.

That matters because system transitions rarely create stress in only one place. A change in filing method can affect internal process owners, software providers, testing plans, documentation, support expectations, and how teams handle corrections or status monitoring. Even if the actual filing deadline does not change, the readiness work does.

That is why the planning calendar needs to move up.

If your team waits until the filing season itself to start working through IRIS requirements, you are asking a deadline period to carry work that should have been done earlier and more deliberately.

IRIS is not just a new name for the old process

One reason some organizations underestimate this transition is that they assume IRIS is simply a newer version of the same workflow.

It is not.

IRIS introduces a different filing model. It gives filers two main paths: the Taxpayer Portal and the Application-to-Application, or A2A, method. The portal supports manual entry and CSV upload, while A2A supports direct transmission from approved software using XML. That means the transition is not only about where files get sent. It is also about how the organization intends to file going forward.

That difference matters operationally.

A smaller-volume organization may decide the portal is enough. A higher-volume filer or software-driven environment may need A2A. A payer that relies on vendor software may need to confirm that software is actually ready for IRIS, not just assumed to be ready. A team planning for automation may need more lead time because A2A introduces additional setup, testing, and technical coordination.

This is why the smartest first move is not “we’ll deal with IRIS later.” It is “which IRIS path actually fits how we file?”

Existing FIRE credentials are not enough

This is one of the most important points in the transition, and one that organizations should not gloss over.

A FIRE TCC does not carry over into IRIS.

The systems use different TCCs, and the IRS makes clear that TCCs are not interchangeable between intake systems. In practical terms, that means an organization that already files through FIRE still needs to apply for an IRIS TCC if it plans to file through IRIS.

That is a meaningful operational step, not a minor formality.

The application process can take time. IRS materials say to allow up to 45 calendar days for application processing. For organizations that need internal coordination across responsible officials, contacts, software choices, or transmission methods, that timeline can become more significant very quickly.

This is exactly why payer teams should not treat the IRIS TCC as something to handle at the last minute. If your filing process depends on getting that approval in place, the safest move is to start early enough that a delay in setup does not become a filing-season problem.

The real risk is not the deadline alone. It is compressed preparation.

Most filing teams know how to work under deadline pressure. That is not usually the issue.

The issue is when too much setup work gets pushed into the same period as the filing pressure itself.

When that happens, the team is no longer just trying to file accurately and on time. It is also trying to finalize system access, confirm the right filing method, coordinate with vendors, understand new workflows, and make sure nothing important was missed in the transition away from FIRE.

That is a heavy lift for a deadline period.

A better approach is to separate readiness work from deadline work as much as possible. The closer a team gets to filing season without resolving the IRIS transition, the more likely that ordinary filing stress turns into preventable operational stress.

This is especially important for healthcare payers, where year-end and compliance-related workflows already carry enough complexity without adding a last-minute filing-platform transition on top of them.

What healthcare payers should be doing now

The most practical way to approach this transition is to break it into a short list of real decisions and actions.

First, confirm whether your current process depends on FIRE today. That sounds obvious, but organizations sometimes assume they know how filing happens without fully mapping the current workflow.

Second, determine which IRIS path fits your organization. If your filing volume is smaller, the portal may be appropriate. If your process depends on system integration, automation, or larger-scale transmission, A2A may be the better fit.

Third, apply for the right IRIS TCC rather than assuming existing credentials will carry over. They will not.

Fourth, confirm vendor or internal software readiness. If your organization uses third-party software, this is not a detail to leave unasked. You need to know whether the software supports IRIS, which transmission method it supports, and whether it supports the correction and replacement workflows your business may need.

Fifth, give the transition an owner. Not a vague committee, not a loose acknowledgment that someone will handle it later. A real owner or internal path that can move the work forward.

These are straightforward steps, but they matter because they shift the transition out of the abstract and into something operationally manageable.

Waiting creates the wrong kind of pressure

There is a pattern that shows up in almost every compliance-related process change.

Early on, the change feels easy to postpone because nothing appears broken yet. Existing workflows are still running. Deadlines are still being met. The old system is still available. It feels reasonable to wait.

Then time shrinks.

Now the organization is working against a real cutoff, with less room to test, confirm, and fix anything that turns out not to be ready. What looked like a manageable deferral becomes a compressed project attached to a deadline. That is exactly the kind of situation that creates avoidable stress.

The FIRE-to-IRIS shift carries that same risk.

The organizations most likely to struggle are not necessarily the least capable. They are often the ones that waited because the urgency did not feel immediate enough early on. By the time it does, they are asking a filing deadline to absorb a transition project it should not have to carry.

This is also a workflow readiness issue

It is easy to think about IRIS only as an IRS system change. It is also a workflow readiness issue inside the organization.

A filing platform change affects more than submission. It affects who needs access, what approvals are needed, how data gets prepared, how errors get handled, how acknowledgments get tracked, and what happens if corrections or replacements are needed later. For teams that already manage year-end pressure, those are not small details.

That is why this transition deserves attention now.

Even if your organization is not ready to change everything immediately, it should be ready to start the readiness work. That is the difference between a controlled transition and a rushed one.

The organizations that move early will have more options

There is a practical advantage to moving early on this transition.

You have more room to choose rather than react.

More room to decide whether the portal or A2A is the better fit. More room to work through TCC and access requirements. More room to confirm software support. More room to fix process gaps before the filing season puts pressure on every unresolved detail.

That flexibility matters because late transitions tend to narrow options. Teams stop choosing the best setup and start choosing whatever can be put in place fastest. That is rarely the strongest long-term outcome.

The organizations that start now give themselves a better chance to move into IRIS in a controlled, decision-ready way rather than through last-minute scramble.

FIRE is ending. The preparation window is now.

This transition is coming whether organizations feel ready or not.

For healthcare payers, the smartest response is not panic. It is preparation.

FIRE may still feel familiar, but familiarity is not a transition plan. The move to IRIS requires real operational readiness: the right filing path, the right TCC, the right software support, and enough lead time to get those pieces in place before filing season pressure does the deciding for you.

Teams that start now are more likely to make the shift cleanly.

Teams that wait risk turning a manageable filing transition into another year-end fire drill.

If your organization is still relying on FIRE or has not yet mapped out its move to IRIS, Baseload can help you think through the operational side of the transition before the deadline pressure arrives. Contact Baseload to see where your filing workflow may need more preparation before IRIS becomes mandatory.