Montana's two cheapest silver plans are $1 apart — so the real decision is a $2,115 deductible gap. Add PacificSource's exit after 2026 and a Medicaid expansion the legislature just made permanent, and Big Sky Country's small market has big decisions. Here's the 2026 picture.
Based on 2026 rate analyses, Mountain Health CO-OP has the cheapest silver plan in Montana at about $662 a month for a 40-year-old — with Blue Cross Blue Shield of Montana at $663. A $1 premium difference is a tie; the real difference is structure: Blue Cross's comparable silver carries a deductible around $2,568 versus the CO-OP's $4,683.
Only three carriers sell 2026 plans — the CO-OP, Blue Cross, and PacificSource ($754) — and PacificSource has announced it leaves the marketplace after 2026. Montana's reinsurance program, running since 2020, is part of why full-price premiums here undercut many larger states despite the thin field.
One of the last surviving ACA co-ops in the country — member-governed, PPO-structured, with a moderate +21.7% increase. The trade: a ~$4,683 deductible.
One dollar more per month buys a deductible about $2,115 lower — plus the state's broadest network. For anyone who uses regular care, this is usually the win.
The smallest increase this year (+11.3%), but it's a one-year story: PacificSource exits Montana's marketplace after 2026. Fine for now; plan your 2027 move.
Figures are approximate, from 2026 rate analyses for a 40-year-old on silver plans. Your rate varies by region, age, household size, tobacco use, and income.
A $1 premium gap and a $2,115 deductible gap means the "cheapest plan" question is really a how-much-care-do-you-use question. A licensed agent can run all three carriers for your ZIP code, age, and income — free, in about 10 minutes.
No cost. No obligation to enroll. Licensed in 23 states, including Montana.
Before subsidies, silver plans for a 40-year-old Montanan average about $660 a month in 2026, clustered tightly between $662 and $754. The average approved increase was 29.1%; subsidized enrollees pay an average of about $107 a month.
| Carrier | 2026 position | Approved rate increase |
|---|---|---|
| PacificSource | ~$754; exits after 2026 | +11.3% (lowest) |
| Mountain Health CO-OP | Cheapest silver ~$662; PPO co-op | +21.7% |
| BCBS of Montana | ~$663; deductible ~$2,568 — lowest | +24.8% |
Approximate 2026 figures from Montana CSI filings and public rate analyses, before premium tax credits. Availability and pricing vary by region.
ACA rates follow the federal age curve — a 64-year-old can be charged up to three times a 21-year-old's rate. Using a ~$660 Montana silver average at age 40:
| Age | Approx. monthly premium (silver) | vs. age 21 |
|---|---|---|
| 21 | ~$520 | 1.0× |
| 30 | ~$585 | 1.1× |
| 40 | ~$660 | 1.3× |
| 50 | ~$925 | 1.8× |
| 60 | ~$1,405 | 2.7× |
Illustrative — applies the federal default age factors to an approximate 2026 Montana silver average. Subsidies are age-aware, so older enrollees with moderate incomes often receive much larger credits.
Montana's small market saw two changes that matter more than the rate headline:
The enhanced premium tax credits that capped marketplace premiums from 2021–2025 ended December 31, 2025 — the single biggest driver of this year's rate jump. The original ACA credits are still in place for households between 100% and 400% of the federal poverty level (roughly up to $62,600 single, $128,600 family of four).
PacificSource stays through 2026 but won't offer marketplace coverage for 2027 — every one of its members must select a new plan this fall. With only the CO-OP and Blue Cross remaining, compare both rather than accepting whatever the marketplace maps you to.
Montana's Medicaid expansion had operated under sunset clauses since 2015; in 2025 the legislature removed the sunset entirely, making coverage for adults up to 138% of the poverty level a permanent feature. Combined with the state's reinsurance program (running since 2020, and part of why Montana's full-price premiums undercut many bigger states), the safety net here is sturdier than the three-carrier lineup suggests.
Sources: healthinsurance.org Montana marketplace guide, MoneyGeek, HealthCare.gov.
Montana's carriers file statewide, so the regional question is really a network question:
In a state where two plans differ by $1 a month, everything rides on deductibles, networks, and which hospital is within a hundred miles — Montana is the clearest case we have that premium is the least interesting number on the page.
Tell me your ZIP code, ages, and household income — I'll compare every carrier filed in your area (and check Medicaid eligibility while we're at it), then show you what you'd actually pay after subsidies.
Free comparison. No pressure, no obligation.
Metal tiers are about how you split costs with the insurer — not the quality of care. In Montana, the CO-OP-versus-Blue Cross deductible gap inside the silver tier is bigger than most tier gaps:
Lowest premium, ~$10,600 deductible. Pure emergency protection — no subsidy eligibility.
Cheapest subsidized tier. Pair an HSA-eligible bronze plan with tax-free savings if you're healthy.
The sweet spot for most Montanans — but the two ~$662 silvers hide a $2,115 deductible difference. Compare inside the tier, not just across tiers.
Worth comparing against silver every year — rate-filing quirks sometimes put gold within a few dollars.
Highest premium, lowest out-of-pocket. Rarely offered in Montana.
Montana's safety net quietly firmed up in 2025:
Turning 65 soon? Marketplace plans stop making sense once Medicare kicks in — see your Medicare options instead.
$662 versus $663 is noise; $4,683 versus $2,568 is the decision. If you expect real care use, Blue Cross's structure likely wins; if you're buying pure protection, the CO-OP keeps more cash in your pocket monthly.
Expansion is now permanent — under roughly 138% of the poverty level you likely qualify for free or nearly free coverage, year-round.
Credits are based on this year's income estimate, and the math changed for 2026. A mid-year income change, a new baby, or a household change can unlock help immediately.
Cost-sharing reductions only attach to silver plans. They can cut a multi-thousand-dollar deductible to a few hundred dollars — a benefit bronze and gold buyers give up.
Your carrier leaves after 2026. Use this fall's open enrollment to compare the CO-OP and Blue Cross against your actual providers rather than accepting an auto-mapped plan.
Premiums are regulated: you pay the same whether you enroll alone or with an agent. The difference is having someone who runs all three carriers, does the math on the whole year — premiums plus deductibles — and answers the phone after you enroll.
Based on 2026 rate analyses, Mountain Health CO-OP has the cheapest silver plan in Montana at about $662 a month for a 40-year-old — but Blue Cross Blue Shield of Montana is one dollar behind at $663 with a deductible about $2,115 lower ($2,568 vs. $4,683). On premium it's a tie; on structure, Blue Cross usually wins for anyone who uses regular care.
Before subsidies, silver plans for a 40-year-old Montanan run from about $662 to $754 a month in 2026 — a tight band by national standards, helped by Montana's reinsurance program. Premiums rose 29.1% on average, and subsidized enrollees pay about $107 a month on average.
Yes. Montana uses the federal marketplace — you shop and enroll at HealthCare.gov, and a licensed agent can quote and enroll you through it at no extra cost. Plans, prices, and subsidies are identical either way.
Yes. The original ACA premium tax credits are still in place for households earning between 100% and 400% of the federal poverty level — roughly up to $62,600 for a single person or $128,600 for a family of four. What expired at the end of 2025 were the enhanced subsidies, which had capped premiums and extended help above 400% of poverty.
If you've had a qualifying life event in the last 60 days — losing other coverage, moving, marriage, a new baby, certain income changes — you may qualify for a Special Enrollment Period on HealthCare.gov and can enroll now. Medicaid and CHIP enrollment (for those who qualify) is open year-round. Otherwise, open enrollment for 2027 coverage begins November 1, 2026.
Yes — and as of 2025, permanently. Montana expanded Medicaid in 2015 under sunset clauses, and the 2025 legislature removed the sunset entirely. Adults with household income up to 138% of the federal poverty level (roughly $21,600 for a single person) qualify regardless of whether they have children. Children are covered by Medicaid and Healthy Montana Kids. Enrollment is year-round.
The premiums are $1 apart, so decide on everything else: Blue Cross's comparable silver deductible runs about $2,115 lower and its network is the state's broadest, while the CO-OP offers a member-governed PPO with the lowest sticker. Light care users often prefer the CO-OP; anyone expecting regular visits, prescriptions, or a procedure usually comes out ahead with Blue Cross. Verify your regional hospital participates in whichever you pick.
No. Premiums are filed with regulators and are identical whether you enroll through HealthCare.gov yourself, directly with the carrier, or with a licensed agent. Agents are paid by the insurance companies, so the guidance costs you nothing extra.
Premium figures on this page are approximate averages drawn from 2026 individual-market rate filings and analyses, including healthinsurance.org, MoneyGeek, and ValuePenguin, checked July 2026. They are illustrations, not quotes: your premium depends on your region, age, household, tobacco use, income, and the plan you choose. Official plan pricing is available at HealthCare.gov or through any licensed agent.
Zuriel is licensed in 23 states. Explore cost guides for other states we serve:
Talk with Zuriel Kinlock, a licensed insurance agent, and get a real comparison of every 2026 plan filed in your Montana region — free, with zero obligation.
Important: This page is for general information and reflects approximate 2026 figures from public sources; it is not a quote, and submitting information or speaking with a licensed insurance agent does not guarantee enrollment, eligibility, savings, approval, or specific benefits. There is no obligation to enroll. Smooth Health Solutions is not connected with or endorsed by the U.S. government, the federal Medicare program, CMS, HealthCare.gov, or any government agency. Plan availability, benefits, premiums, and eligibility vary by plan, carrier, location, and individual circumstances.
