The Marketplace in Tennessee: How HealthCare.gov Works Here

The answer up front: Tennessee uses the federal marketplace — there is no separate Tennessee exchange. You shop, compare, and enroll at HealthCare.gov or by calling 1-800-318-2596 (TTY 1-855-889-4325). Every plan sold there covers the same ten essential health benefits, can't turn you down for pre-existing conditions, and may come with federal tax credits that lower your premium.

For 2027 coverage, five insurers will sell marketplace plans in Tennessee: BlueCross BlueShield of Tennessee, Celtic/Ambetter, Oscar, UnitedHealthcare, and Alliant Health Plans. Open enrollment runs November 1, 2026 – January 15, 2027 — see our open enrollment guide for dates, deadlines, and the prep checklist.

How it works, step by step

1. Create an account at HealthCare.gov (or call 1-800-318-2596). Tennessee residents use the federal site — the same one used by most states.
2. Enter your household and income. This determines whether you qualify for premium tax credits and cost-sharing reductions, and whether you might qualify for TennCare instead. Get the income estimate right — it's reconciled at tax time.
3. Compare plans. Filter by metal tier, monthly premium, deductible, and — most importantly — whether your doctors and prescriptions are covered. Window shopping for 2027 plans typically opens in late October.
4. Enroll and pay your first premium. Coverage doesn't start until the insurer receives your first payment.

That's the whole machine. Everything else on this page is about making step 3 smarter.

The five 2027 insurers

These are the only companies selling individual marketplace plans in Tennessee for 2027:

• BlueCross BlueShield of Tennessee — the state's dominant insurer; broadest footprint. Approved 2027 rate change ~+10.4%.
• Celtic / Ambetter — the Ambetter brand; value-oriented plans. ~+11% requested.
• Oscar — tech-forward plans with a digital-first experience. ~+21.4%.
• UnitedHealthcare — national carrier back in the TN individual market. ~+24.5%.
• Alliant Health Plans — regional nonprofit plan expanding in Tennessee. ~+23.3%.

The statewide weighted-average approved increase is roughly 15.6–15.9%. Cigna is exiting the Tennessee marketplace after 2026 — if you're currently on Cigna, you must pick a new plan during open enrollment.

Metal tiers, in plain English

Metal tiers describe how you and the plan split the average cost of care — not the quality of the care or the doctors. Think of it as choosing your payment style:

• Bronze — lowest monthly premium, highest costs when you get care. The plan pays roughly 60% of average costs. Fits: healthy people who rarely see a doctor and want the cheapest "just in case" coverage. Starting in 2027, bronze plans are HSA-compatible.
• Silver — the middle ground, and the only tier that unlocks extra help. The plan pays roughly 70%. Fits: most people — and it's required if you qualify for cost-sharing reductions (households around 100%–250% of the poverty level), which slash your deductible and copays. A silver plan with cost-sharing reductions often beats a gold plan on total cost.
• Gold — higher monthly premium, lower costs when you get care. The plan pays roughly 80%. Fits: people who see doctors regularly, take ongoing prescriptions, or expect a surgery or a baby in 2027.
• Platinum — highest monthly premium, lowest costs at the point of care. The plan pays roughly 90%. Fits: people with significant, predictable medical needs who'd rather pay more monthly and less per visit.

The right tier depends on your health, your income (which determines your subsidies), and your risk tolerance — not on the metal's name. Our plans-compared guide walks through the math.

Catastrophic plans: who they're for

Catastrophic plans have the lowest premiums on the marketplace and very high deductibles. They cover three primary-care visits a year plus all preventive care before the deductible; everything else you pay full price for until you hit it.

You can only buy one if you're under 30 or you qualify for a hardship or affordability exemption. And there's a catch that surprises people: no premium tax credits on catastrophic plans. If your income qualifies you for subsidies, a bronze or silver plan with credits is almost always the better deal. See our catastrophic plans page.

What's guaranteed: essential health benefits and guaranteed issue

Every marketplace plan in Tennessee — every insurer, every metal tier — must cover the same ten essential health benefits: outpatient care, emergency services, hospitalization, pregnancy and newborn care, mental health and substance-use treatment, prescription drugs, rehabilitation, lab work, preventive care, and pediatric services (including dental and vision for kids).

And every marketplace plan is guaranteed issue: the insurer cannot turn you down, charge you more, or exclude coverage because of a pre-existing condition. This is the core protection that separates marketplace plans from non-ACA options like Farm Bureau health plans and short-term plans, which can do all of those things. See our pre-existing conditions guide.

What you'll actually pay

A plan's price tag is the monthly premium — but that's only one of four cost levers. The others are your deductible, copays/coinsurance, and out-of-pocket maximum (capped at $12,000 individual / $24,000 family for 2027). Premium tax credits can lower the premium if your household income falls roughly between 100% and 400% of the federal poverty level — with a hard cutoff at 400% for 2027. We never publish standing premium prices (they vary by age, county, and tobacco use and change every year); instead, check current rates with HealthCare.gov window shopping or on the insurers' own sites. For the full cost picture, see our costs hub and subsidies page.

Marketplace vs. buying "private"

Marketplace plans are private insurance; HealthCare.gov is the store. You can buy the same kind of ACA plan directly from an insurer or broker at the same price, but only plans bought through HealthCare.gov (or an approved site connected to it) come with tax credits. Non-ACA options like short-term and Farm Bureau plans are a different product with fewer protections. Private insurance vs. the marketplace →

Free help enrolling

You don't have to do this alone, and the help is free:

• HealthCare.gov call center: 1-800-318-2596 (TTY 1-855-889-4325), 24/7 except holidays. They can walk you through the application and answer eligibility questions.
• GetCoveredTenn: 1-866-475-7879 (TTY 855-889-4325) — Tennessee's federally funded Navigator program, operated by Family & Children's Service with partners across the state, serving all 95 counties. Free, unbiased help with marketplace, TennCare, and CoverKids enrollment.
• HealthCare.gov's "Find Local Help" tool — lists navigators, certified application counselors, and agents/brokers near you.

One honest caveat: GetCoveredTenn's in-person help covers 10 counties (Cheatham, Davidson, Fayette, Robertson, Rutherford, Shelby, Sumner, Tipton, Williamson, Wilson) — everywhere else in Tennessee is served by phone/virtual appointment at 1-866-475-7879. Book early in open enrollment season.

FAQ

Is there a Tennessee-specific marketplace website? No. Tennessee uses the federal marketplace at HealthCare.gov — the same platform used by most states. Any site claiming to be "the Tennessee exchange" is a private broker or lead generator, not the official marketplace.

How do I know which insurers sell plans in my county? The honest answer: check HealthCare.gov window shopping when it opens in late October. Tennessee has 8 rating areas and not every insurer sells in every area; the state's published map still reflects 2026. Enter your ZIP code on HealthCare.gov and it will show you exactly who's selling where you live.

I'm healthy and rarely see a doctor. Should I just buy the cheapest bronze plan? Maybe — but check two things first. If your income is under 400% of the poverty level, premium tax credits might make a silver plan cheaper than you expect, and cost-sharing reductions (silver only, under ~250% FPL) can make silver the best value on the marketplace. Also confirm your one or two doctors are in the plan's network.

Can a marketplace plan deny me for a pre-existing condition? No. All marketplace plans are guaranteed issue — no denials, no surcharges, no waiting periods for pre-existing conditions. That's federal law and it applies to every plan from every insurer on HealthCare.gov.

What's the difference between the marketplace and COBRA? COBRA lets you keep your former employer's plan (you pay the full cost, so it's usually expensive). The marketplace is individual insurance you buy yourself, often with tax credits that make it far cheaper than COBRA. Compare both before defaulting to COBRA — see our COBRA guide.

When can I actually see 2027 prices? HealthCare.gov window shopping typically opens in late October, days before open enrollment starts November 1. That's when plan details, provider networks, and real premiums for 2027 become visible.

Sources

• Healthcare.gov (federal marketplace; Tennessee uses the federally facilitated marketplace; 1-800-318-2596)
• Tennessee SERFF rate filings via acasignups.net (2027 carrier list and final approved rate changes; ~15.6–15.9% statewide weighted average)
• healthinsurance.org (Cigna's Tennessee exit; Tennessee marketplace overview)
• CMS 2027 marketplace parameters ($12,000/$24,000 out-of-pocket maximums)
• GetCoveredTenn (Navigator program: 1-866-475-7879, all 95 counties)
• TN Department of Commerce & Insurance, Health Insurance 101 (rating-area map — note: reflects 2026 plan year)
• KFF Health News (Farm Bureau plans as the non-ACA contrast)
• The 2027 plan-year research brief on file at this site (how we verify our facts)