Montana open enrollment 2027 Open enrollment · Montana

Montana Open Enrollment 2027 for Families

Last updated November 3, 2026 · By Frank Caballero, licensed health insurance broker

Short answer

For families buying their own coverage in Montana, open enrollment for 2027 coverage runs November 1, 2026 to January 15, 2027 on HealthCare.gov, and December 15 is the date to choose by for a January 1 start. A private, medically underwritten plan for the household does not wait for the window either: if approved, it can start the first of any month.

What 2027 looks like for you

Montana's average 2027 rate change is 22.6% to 23.3% (finalized). The details are on the Montana 2027 premium increase page.

The 2027 subsidy line rises with household size: $109,280 for a household of three, $132,000 for four, and higher for larger families. Marketplace plans charge for at most three children under 21, so a bigger family's premium stops growing after the third child. Montana parents above the line pay full price at every metal level, which is when a side-by-side comparison matters most.

Montana this year

Montana families have only two insurers to pick from for 2027, and the finalized increase averages about 23 percent. In many counties the whole decision comes down to two networks, and the drive to a hospital in Billings, Missoula, Bozeman, Great Falls or the Flathead Valley can be long, so the network for a child's care weighs more than a few dollars of premium. Montana's reinsurance program, approved through 2029, softened the jump but did not stop it. Montana's HealthCare.gov season runs through January 15, and plans picked by December 15 begin on New Year's Day. Over $109,280 for three, no subsidy applies.

One thing to do before you choose

If you live an hour or more from a hospital, find out which regional referral centers each of the two networks includes, not just the nearest clinic, since that is where a seriously ill child would go. Seasonal guides and outfitters with little winter income should estimate 2027 earnings over the whole year. If your family is healthy and earns past the cutoff, I can run a private quote to set against a 23 percent increase.

Your checklist

Each family member's doctors and the children's hospital you use
The family deductible and out-of-pocket maximum
Household income against your household-size line
Planned 2027 care: a pregnancy, braces or surgery

Private plan or Marketplace?

Private plan

Whole household healthy, income above the line: each person is approved on their own health answers; not an ACA Marketplace plan.

Marketplace

Ongoing care for a child or parent, or income under the line: HealthCare.gov accepts everyone, and the subsidy grows with household size.

Compare Montana plans this open enrollment

Private plans priced first, the Marketplace alongside when it fits. Phone or video, English or Spanish, no fee.

Get a quote Book a call (786) 218-2384

About your broker

Frank Caballero (NPN 21032307), licensed in 31 states including Montana. Phone or video, English or Spanish, no fee; independent, not HealthCare.gov or any government agency.

Questions

When is the 2027 open enrollment deadline in Montana?

January 15, 2027 on HealthCare.gov. Choose by December 15, 2026 for coverage that starts January 1; plans picked after that start February 1.

With only two insurers in Montana, how do I choose for my kids?

Start with where your children would go for serious care. Check which referral hospitals each network includes, then compare drug lists and premiums. If neither fits and everyone is in good health, private plans are another path, with the caveat that the insurer reviews health questions before accepting anyone and that covered services differ from one plan to the next.

Can I get a private plan in Montana after open enrollment closes?

Yes. You can apply in any month and, if approved, a private plan can start the first of a month; the insurer can decline based on health answers.

More for Montana

Official sources: HealthCare.gov, the federal Marketplace; HealthCare.gov: special enrollment periods. FC Insurance Solutions is an independent, licensed brokerage and is not affiliated with any government agency.

Written by Frank Caballero, licensed health insurance broker in Montana and 30 other states, NPN 21032307. Last updated November 3, 2026.