Your Guide to Montana's 2027 Health Insurance Marketplace Plans

f you’ve been paying attention to health insurance news in Montana over the past few months, you know this is an important year to be informed. PacificSource — one of three carriers that offered individual Marketplace plans in Montana in 2026 — has announced it is exiting the market entirely, effective December 31, 2026. That means every Montanan currently enrolled in a PacificSource plan will need to actively select a new plan before coverage ends.

But even if you don’t have PacificSource right now, 2027 brings meaningful changes to Montana’s Marketplace that every individual and family buyer should understand before open enrollment begins. This guide covers who’s offering plans, how subsidies work in 2027, key enrollment deadlines, and how to make sure you end up in the right plan for your situation.

What’s New for 2027: The Big Picture

Three things stand out as the most significant changes heading into the 2027 plan year:

1. PacificSource is exiting the Montana market. Effective January 1, 2027, PacificSource will no longer offer individual, family, or employer-sponsored health plans in Montana. If you’re currently enrolled in a PacificSource plan, your coverage ends December 31, 2026. You must actively enroll in a new plan.

2. Open enrollment is shorter. Starting with the 2027 plan year, open enrollment on the federal Marketplace (HealthCare.gov, which Montana uses) runs from November 1 to December 15, 2026 — a 45-day window. This is significantly shorter than the extended January 15 deadline that was available for the 2026 plan year. All plans selected during this window take effect January 1, 2027.

3. The subsidy landscape continues to evolve. The enhanced federal premium subsidies that were available from 2021 through 2025 expired at the end of 2025. For 2026 and heading into 2027, subsidy eligibility returns to pre-enhancement parameters — available to households earning between 100% and 400% of the federal poverty level. This has already resulted in higher after-subsidy premiums for many enrollees, and that dynamic is expected to continue into 2027.

Montana’s 2027 Marketplace Carriers

With PacificSource’s exit, Montana’s individual ACA Marketplace for 2027 will have two carriers:

Blue Cross Blue Shield of Montana (BCBS MT)

Blue Cross Blue Shield of Montana — operating as part of Health Care Service Corporation (HCSC), the largest nonprofit health insurer in the United States — is Montana’s dominant individual market carrier. BCBS MT offers both PPO (Preferred Provider Organization) and POS (Point of Service) plan types, giving members meaningful flexibility in how they access care.

BCBS MT’s network is well-established across Montana, including in both urban centers like Billings, Missoula, Great Falls, and Kalispell, and in more rural and frontier communities. For Montanans who see specialists regularly or manage ongoing health conditions, BCBS MT’s relatively lower deductibles (compared to Mountain Health CO-OP) have historically made it the stronger value when you factor in total annual out-of-pocket costs, not just the monthly premium.

Plan types: PPO and POS
Best for: Regular healthcare users, those managing chronic conditions, and members who prioritize network breadth.

Mountain Health CO-OP

Mountain Health CO-OP is Montana’s homegrown nonprofit health insurer — a member-governed cooperative and one of only three ACA-created CO-OPs still operating anywhere in the country. It offers PPO plans across Montana, including coverage for Wyoming residents as well.

Mountain Health CO-OP consistently offers some of the most competitive monthly premiums in Montana’s individual market. However, their deductibles tend to be higher than BCBS MT’s, meaning members pay more out of pocket before coverage kicks in. For generally healthy Montanans who don’t expect to use their insurance frequently beyond preventive care, Mountain Health CO-OP’s lower premium can represent real savings.

Plan types: PPO only
Best for: Generally healthy individuals and families who want to minimize monthly premiums and don’t expect to hit their deductible.

Understanding Your Plan Options: Metal Tiers Explained

Both carriers offer plans across the four ACA “metal” tiers. Every plan at every tier covers the same set of essential health benefits — doctor visits, emergency care, hospitalization, prescription drugs, mental health and substance use disorder services, maternity care, preventive services, rehabilitative services, and pediatric care. What changes across tiers is how you and your insurer split the cost when you use care.

• Bronze: The insurer covers approximately 60% of costs across a standard population; you cover the remaining 40%. Lowest monthly premiums, highest deductibles. Best suited for healthy individuals who want a safety net for major or catastrophic events but rarely use routine care.

• Silver: The insurer covers approximately 70%; you cover 30%. Middle-ground premiums and deductibles. The most strategically important tier — Silver is the only plan level eligible for Cost-Sharing Reductions (CSRs), which can dramatically reduce your deductible and out-of-pocket costs if your income qualifies. For most Montanans who are subsidy-eligible, Silver is the default starting point for comparison.

• Gold: The insurer covers approximately 80%; you cover 20%. Higher monthly premiums, lower deductibles and out-of-pocket costs. Best for people who use healthcare regularly and want predictable, lower costs when they access care.

• Platinum: The insurer covers approximately 90%; you cover 10%. Highest monthly premiums, lowest out-of-pocket exposure. Rarely available in Montana’s market.

The maximum out-of-pocket cap for ACA plans limits how much you’ll pay for covered services in a year. These limits are set annually by the federal government and apply across all metal tiers. No matter what happens medically in a given year, your covered costs won’t exceed this ceiling.

Cost-Sharing Reductions: The Silver Plan Advantage

If your household income is at or below 250% of the federal poverty level, you may qualify for Cost-Sharing Reductions (CSRs) — but only if you enroll in a Silver plan. CSRs reduce your deductible, copays, coinsurance, and out-of-pocket maximum, effectively giving you Gold- or even Platinum-level protection at a Silver price.

In 2026, 24% of Montana Marketplace enrollees received CSR benefits. If you’re in the income range that qualifies, choosing anything other than a Silver plan means leaving this benefit on the table entirely.

Here’s how CSR tiers work in practice:

• Income 100–150% FPL: Silver plan acts like a Platinum plan — very low deductible, low out-of-pocket maximum

• Income 150–200% FPL: Silver plan acts like a Gold plan — meaningfully reduced deductible and out-of-pocket costs

• Income 200–250% FPL: Silver plan provides moderate CSR benefits — still significantly better than a standard Silver

Important: CSRs are only available through the Marketplace. They cannot be obtained through off-exchange plans or short-term health insurance.

Premium Subsidies in 2027: What You Need to Know

Premium subsidies — formally called Advance Premium Tax Credits (APTC) — are available to households earning between 100% and 400% of the federal poverty level (FPL). If you qualify, these credits are applied directly to your monthly premium, reducing what you owe.

For reference, 400% FPL in 2026 was approximately:

• $62,600 for a single person

• $84,600 for a household of two

• $128,600 for a household of four

If your income is above these thresholds, you won’t qualify for a subsidy — a cliff that returned in 2026 after the enhanced subsidy provisions from the American Rescue Plan expired at the end of 2025.

A few things to keep in mind for 2027:

• Your subsidy is tied to the benchmark plan. Subsidies are calculated based on the cost of the second-lowest-cost Silver plan in your zip code. If you choose a cheaper plan, you keep the difference. If you choose a more expensive plan, you pay the additional cost.

• Estimate your income accurately. If you receive too much in advance subsidies and your actual income ends up higher, you’ll repay the difference at tax time. If you underestimate and receive too little, you’ll receive the difference as a tax credit when you file.

• Income fluctuates? Review annually. Self-employed Montanans, farmers, contractors, and gig workers with variable income should revisit their subsidy eligibility every year at open enrollment.

Key Deadlines for 2027 Coverage

November 1, 2026: Open enrollment begins. This is the first day you can enroll in, change, or renew a 2027 Marketplace plan.

December 15, 2026: Open enrollment closes for 2027 coverage on HealthCare.gov. This is the hard deadline for Montana residents using the federal Marketplace. Plans selected by December 15 take effect January 1, 2027.

Note for PacificSource members: Your current plan ends December 31, 2026. You have a Special Enrollment Period triggered by your carrier’s exit — but the cleanest path is to enroll during open enrollment before December 15 so your new coverage starts January 1 with no gap.

Outside of open enrollment, the only way to enroll is through a Special Enrollment Period (SEP) triggered by a qualifying life event such as losing other coverage, getting married, having a child, or moving to a new coverage area.

Don’t Let the Marketplace Auto-Enroll You

If you currently have a Marketplace plan and take no action during open enrollment, the exchange may attempt to auto-enroll you in a comparable plan for 2027. While this is better than going uninsured, it’s almost never the optimal outcome. The auto-assignment algorithm doesn’t know which doctors you see, which prescriptions you take, or how you actually use your insurance throughout the year.

This is especially true for PacificSource members, who will be reassigned to a completely different carrier with a different network, formulary, and cost structure. Never assume that the auto-assigned plan is the right plan — always review your options manually.

What to Check Before Choosing a Plan

Before you lock in a 2027 plan, take the time to verify:

• Network: Are your primary care doctor, specialists, and preferred hospital in-network with the plan you’re considering? Both BCBS MT and Mountain Health CO-OP offer some level of out-of-network coverage through their PPO and POS structures, but in-network care is always significantly less expensive. In Montana’s rural and frontier communities, this is a particularly critical check.

• Prescription formulary: Does the plan cover your medications? And at what tier? The difference between a Tier 1 and Tier 3 drug copay can add up to hundreds of dollars per year.

• Deductible vs. premium trade-off: Don’t choose a plan based on monthly premium alone. A Bronze plan with a $7,000 deductible may look attractive at $150/month, but if you have a health event mid-year, you’ll pay far more out of pocket than a Gold plan member would.

• Out-of-pocket maximum: Know your ceiling. This is the most you’ll ever pay for covered services in a plan year, regardless of how much care you need.

How a Local Broker Can Help

Shopping the Marketplace independently is possible — but it’s easy to miss things that matter. An independent insurance broker works for you, not for the insurance company, and can:

• Compare both carriers side by side based on your specific doctors and prescriptions

• Identify whether you qualify for CSRs and which Silver plan maximizes that benefit

• Help you accurately estimate income for subsidy calculations

• Walk you through the enrollment process and make sure your new coverage is confirmed

Using a broker costs you nothing — brokers are compensated by the carriers at no additional cost to you. For Montanans navigating a carrier exit, a changing subsidy landscape, and a shorter enrollment window all at once, getting a second set of eyes on your options is well worth it.

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Get Ahead of the Deadline

If you’d like to explore your options and get ahead of the open enrollment deadline, you can browse and enroll in available ACA Marketplace plans directly through our enrollment portal: Click Here to View Available Plans

Or feel free to reach out to us directly — we’re locally based in Montana and ready to help.

Ph: 406 401 7220
E: [email protected]

-Klinton Jones
Principal Insurance Broker