One in five ACA clients will change their address at some point during a plan year. Many of them will not realize a move triggers a Special Enrollment Period, or that the clock on that window started the day they moved, not the day they remembered to call. By the time a client reaches you, the 60-day window may already be half spent.
Key Takeaways
- Permanent relocation to a new coverage area triggers a 60-day SEP window from the move date.
- The new rating area changes the SLCSP benchmark and therefore the APTC amount.
- Clients who moved but kept the same address on file may have already started the clock without knowing it.
- The prior plan should be terminated as of the last day of the month before the new plan begins.
- Documentation: proof of prior address plus proof of new address. Request both before starting enrollment.
What qualifies as a change of residence SEP
Under ACA rules, a permanent move to a new coverage area is a qualifying life event. The coverage area is defined by the rating area, which in most states maps to county. Moving across the street into a different county triggers the SEP. Moving to a new apartment in the same county generally does not, unless the new address falls outside the carrier's service area.
A few situations that do not qualify: a temporary relocation for work or school where the client maintains a primary address elsewhere, a move to a second home or vacation property, or a move within the same coverage area. CMS looks at whether the new address is the primary and permanent residence.
The broker workflow, step by step
| Step | Action | Detail |
|---|---|---|
| 1 | Confirm the move date | The 60-day window starts from the date of move. Get the exact date before anything else. |
| 2 | Collect prior and new address documentation | Utility bill, lease, or government mail showing both addresses. Request both upfront. |
| 3 | Identify the new rating area | County determines the rating area in most states. Pull plans in the new county before quoting. |
| 4 | Run new APTC estimate | The new SLCSP benchmark changes the subsidy. Recalculate before the client sees any premium. |
| 5 | Compare plans and select | Check that the client's current providers are in-network in the new area. Network continuity rarely carries over. |
| 6 | Coordinate termination of prior plan | The prior plan should terminate the last day of the month before the new plan begins. Confirm effective dates. |
| 7 | Confirm enrollment and document the file | Save the move date, documents, and enrollment confirmation. Statute of limitations on SEP disputes is long. |
The APTC calculation change matters
This is the part brokers most often underexplain to clients. APTC is calculated as the difference between the client's expected premium contribution (based on income and FPL percentage) and the SLCSP premium in their rating area. When the rating area changes, the SLCSP premium changes, and the APTC changes with it.
Example: a 45-year-old client with household income at 250% FPL moves from a rural county in Georgia with a low SLCSP benchmark to Atlanta metro. The higher metro benchmark produces a higher APTC, which may offset some or all of the higher plan premiums in the new area. The opposite applies for a move from a high-cost market to a lower-cost one. Run the new APTC estimate using the new zip code before showing the client any premium figures.
Illustrative example. Actual APTC depends on the client's household income, FPL percentage, and the SLCSP benchmark in the specific rating area for the current plan year.
Network coverage does not follow the client
A client who moves to a new coverage area does not carry their provider relationships with them. The plan they were enrolled in had a network built around their prior area. The new plans in the new area have different networks, and the client's current providers may not participate in any of them.
During the plan comparison step, check provider network before looking at premium. A client who prioritizes keeping their primary care physician or a specific specialist needs that verified before selecting a plan, not after enrollment. Provider directories are not always current; the most reliable check is a direct call to the provider's billing office.
The clock issue
The 60-day window starts on the date of the move. Not the date the client calls, not the date you update the Marketplace account, not the date the client gets around to unpacking. Clients who moved four weeks ago and are calling now have approximately 32 days remaining. The first question on every relocation intake call should be the exact move date.
Clients who miss the window have no recourse until OEP unless another qualifying event applies. A client who moved in August and calls in November is in OEP territory anyway, but a client who moved in August and calls in October is locked out for two to three months. Document the move date and the SEP window in the client record at intake.
Prior plan termination
The prior plan should terminate at the end of the month before the new plan becomes effective. If the new plan effective date is October 1, the prior plan should end September 30. Confirm termination dates with both the outgoing carrier and the Marketplace to avoid a gap or an overlap that creates a billing issue at tax time.
In states where the prior carrier operates in the new area under a different plan, confirm whether the Marketplace treats the transition as a new enrollment or a plan change. The enrollment path affects the termination and effective date logic.
Frequently asked questions
Common questions from brokers handling ACA change of residence SEP events.
What counts as a qualifying change of residence for ACA SEP?
A permanent move to a new coverage area qualifies. This includes moving to a different state, a different county, or any area served by a different set of carriers and plans. A temporary move, a second address, or a move within the same rating area does not trigger the SEP. CMS requires the new address to be the primary residence.
When does the 60-day SEP window start?
The window starts on the date of the move, not the date the client reports the move to you or updates their Marketplace account. If a client moved three weeks ago and is calling today, you already have 39 days left, not 60. Confirm the move date at the start of every intake call for a relocation SEP.
How does moving affect the client's APTC?
APTC is calculated based on the SLCSP premium in the client's rating area. When the rating area changes, the benchmark changes, and the APTC changes with it. A move from a low-cost rural area to a high-cost metro area could significantly increase the benchmark and therefore the subsidy. A move in the opposite direction reduces it. Run the new APTC estimate before the client selects a plan so there are no surprises at tax time.
Can a client keep their current plan after moving?
Generally no. Plans are rated by service area. If the client moves outside the service area of their current carrier, the plan terminates. The client must select a new plan in the new area. In some cases, a carrier operates in both areas under the same or a different plan name, but the client still needs to re-enroll through the Marketplace for the new address.
What documentation does the Marketplace require for a relocation SEP?
CMS requires proof of the prior address and proof of the new address. Acceptable documents include a utility bill, lease agreement, bank statement, or official mail from a government agency showing the new address. A utility bill or lease works well for both. Collect both documents before starting the enrollment so you are not waiting on the client mid-process.
What if the client misses the 60-day SEP window?
A client who misses the window must wait until Open Enrollment Period (November 1 through January 15 for most FFM states) unless another qualifying life event applies. There is no grace extension for a missed relocation SEP. Document the move date and the missed window in the client record in case the issue comes up later.
