Oklahoma Health Insurance Marketplace Guide

To be able to enroll in a health plan through the Oklahoma Marketplace, you must: ⁶

• Live in Oklahoma
• Be lawfully present in the United States
• Not be incarcerated
• Not be enrolled in Medicare

Eligibility for financial assistance (premium subsidies and cost-sharing reductions) depends on your income. In addition, to qualify for financial assistance with your Marketplace plan you must:

• Not have access to affordable health coverage offered by an employer. If your employer offers coverage but you feel it’s too expensive, you can use our Employer Health Plan Affordability Calculator to see if you might qualify for premium subsidies in the Marketplace. 
• Not be eligible for Medicaid or CHIP.
• Not be eligible for premium-free Medicare Part A.⁷
• If married, file a joint tax return.⁸
• Not be able to be claimed by someone else as a tax dependent.⁸
• Starting in 2027, if you’re not a U.S. citizen, you’ll need to be a lawful permanent resident (LPR), Cuban-Haitian entrant (CHE), or COFA migrant to qualify for Marketplace subsidies. All other immigration statuses will no longer be eligible for subsidies. ⁹

Open enrollment for 2027 self-purchased health insurance runs from November 1, 2026 through October 15, 2027 in Oklahoma. Enrollments must be completed by December 15 in order to have coverage effective on January 1.

(The federal government had planned to shorten the enrollment period, but the schedule change was vacated by a judge¹⁰ and did not take effect.)¹¹

Outside of open enrollment, a special enrollment period (typically linked to a specific qualifying life event) is necessary to enroll or change your coverage. But Native Americans can enroll year-round without a qualifying event. 

If you have questions about open enrollment, you can learn more in our comprehensive guide to open enrollment. We also have a comprehensive guide to special enrollment periods.

To enroll in an ACA Marketplace plan in Oklahoma, you can: 

• Visit Healthcare.gov to access Oklahoma’s Health Insurance Marketplace. Here you will find an online platform to shop, compare, and choose the best health plans. 
• Purchase individual and family health coverage with the help of an insurance agent or broker, a Navigator or certified application counselor, or an approved enhanced direct enrollment entity.¹²

You can reach HealthCare.gov’s call center by dialing 1-800-318-2596 (TTY: 1-855-889-4325). The call center is available 24 hours a day, seven days a week, except holidays.

Starting in the fall of 2027, for coverage effective in 2028, Oklahoma residents will no longer use HealthCare.gov. Instead, they’ll use a state-run enrollment platform and will have access to a state-run call center.²

Oklahoma has a state-based exchange (as of May 2026) but will continue to use the federally-run HealthCare.gov enrollment platform until the fall of 2027.¹ So for coverage effective in 2026 and 2027, Oklahoma residents can get Marketplace subsidies by enrolling at HealthCare.gov. Starting with the 2028 plan year, Marketplace subsidies will be available via Oklahoma’s state-run Marketplace platform instead.

Ninety-one percent of Oklahoma Marketplace enrollees qualified for premium subsidies (advance premium tax credits) in 2026. The average subsidy in Oklahoma was $624/month in 2026, bringing the average net premium down to just $98/month for subsidy-eligible enrollees.¹³

In addition to premium tax credits, the Affordable Care Act provides cost-sharing reductions (CSR) that will reduce out-of-pocket costs on Silver-level plans if your household income isn’t more than 250% of the poverty level.¹⁴ In 2026, 42% of Oklahoma Marketplace enrollees were receiving CSR benefits.¹³ This was down from 56% the year before,¹⁵ because many people switched to lower-premium Bronze plans, which don’t include CSR benefits.

Between the premium subsidies and cost-sharing reductions, you may find that an ACA plan in the Oklahoma Health Insurance Marketplace provides the best value for your health insurance needs.

Source: CMS.gov¹³

Oklahoma implemented the ACA’s expansion of Medicaid starting in mid-2021, under the terms of a voter-approved ballot measure. So Medicaid is available to Oklahoma adults under age 65 with household income up to 138% of the poverty level (a little over $22,000 in annual income for a single person in 2026).¹⁶ (Medicaid was already available to children with even higher household income,¹⁷ and is available to older adults but with both income and asset limits.)

For 2027, five insurers offer health plans through the Oklahoma exchange:¹⁸

• BCBSOK
• Oscar
• CommunityCare
• UnitedHealthcare
• Ambetter (Centene/Celtic)

Two additional carriers, Medica and Mending (formerly Taro Health) offered plans in 2026 but are exiting the Oklahoma market at the end of 2026. So about 7,000 Oklahoma residents with Mending plans,¹⁹ and about 8,400 with Medica plans,²⁰ need to select new coverage during the open enrollment period in the fall of 2026.

Insurer participation in Oklahoma’s Marketplace varies significantly from one area to another. Some counties, especially in the western part of the state (e.g. Cimmaron County), have just a single participating insurer in 2026, while others (e.g. Tulsa County) have plans available from all seven insurers in 2026.²¹ 

The following average premium changes were approved for Oklahoma’s Marketplace insurers for 2027,³ amounting to a weighted average rate increase of about 21.6% (calculated before subsidies are applied):²²

Source: RateReview.HealthCare.gov and Oklahoma SERFF¹⁸

The approved average rate changes apply to full-price premiums, but most Oklahoma Marketplace enrollees qualify for premium subsidies and thus do not pay full price for their coverage.¹³

However, federal subsidies are available to fewer people in 2026 and future years, and are smaller than they would have been if Congress had extended the subsidy enhancements that expired at the end of 2025. The Oklahoma Insurance Department projected that the average after-subsidy cost of a benchmark silver plan in Oklahoma would increase from $58/month in 2025 to $153/month in 2026 due to the expiration of the subsidy enhancements.²³

Ultimately, after people made their plan selections for 2026, the overall average net premium in Oklahoma’s Marketplace more than doubled when the subsidy enhancements expired, growing from $78/month in 2025 to $161/month in 2026.²⁴

For reference, here are examples of the sort of rate increases that people in Oklahoma City faced in 2026 due to the failure of Congress to extend the subsidy enhancements:²⁵

40-year-old earning $40,000:

• Lowest-cost plan in 2025: $50/month
• Lowest-cost plan in 2026: $161/month

60-year-old earning $63,000:

• Lowest-cost plan in 2025: $227/month
• Lowest-cost plan in 2026: $667/month (due to the subsidy cliff)

Oklahoma is one of only three states that do not have their own effective rate review programs, so Oklahoma health insurance rates are reviewed by federal regulators.²⁶

For perspective, here’s an overview of how full-price (pre-subsidy) premiums have changed over time in Oklahoma’s individual/family market:

• 2015: Average increase of 12.2%²⁷
• 2016: Average increase of 25.8%²⁸
• 2017: Average increase of 76%²⁹ (CSR cost added to 2017 rates, a year ahead of other states)³⁰
• 2018: Average increase of 8.7%³¹
• 2019: Average decrease of 1.9%³²
• 2020: Average increase of 2.7%³³
• 2021: Rates mostly unchanged³⁴
• 2022: Average increase of 4.4%³⁵
• 2023: Average increase of 8%-10%³⁶
• 2024: Average increase of 4.4%³⁷
• 2025: Average (unweighted) decrease of 0.7%³⁸
• 2026: Average increase of 25.9%³⁹

Oklahoma submitted a 1332 waiver proposal to the federal government in 2017. The goal was to create a reinsurance program to reduce full-price premiums in the state’s individual market, followed by additional extensive state-led reforms. But amid approval delays the state withdrew the waiver proposal.⁴⁰

However, Oklahoma plans to seek approval for a reinsurance program that will take effect in 2028, at the same time that the state’s new state-run Marketplace platform will be in use.² (As of October 2026, the new 1332 waiver application had not yet been submitted to CMS.)⁴¹

During the open enrollment period for 2026 coverage, 261,887 people enrolled in private individual market plans through Oklahoma’s exchange.¹³

That’s down from a record high of 307,989 people the year before.⁴² 2025 was the seventh year in a row that Oklahoma’s exchange enrollment had hit a record high (see chart below). 

The surge in enrollment during these years was due in part to American Rescue Plan (ARP) provisions that made ACA’s premium subsidies more substantial.²³ Under the ARP – extended by the Inflation Reduction Act – subsidies were more significant and accessible through the end of 2025.⁴³ But as noted above, those subsidy enhancements expired at the end of 2025, leading to lower enrollment for 2026.

The enrollment growth in 2024 and 2025 was also partially due to the “unwinding” of the pandemic-era Medicaid continuous coverage rule. CMS reported that nearly 118,000 Oklahoma residents transitioned from Medicaid to a Marketplace plan during the unwinding process.⁴⁴

Source: 2014,⁴⁵ 2015,⁴⁶ 2016,⁴⁷ 2017,⁴⁸ 2018,⁴⁹ 2019,⁵⁰ 2020,⁵¹ 2021,⁵² 2022,⁵³ 2023,⁵⁴ 2024,⁵⁵ 2025⁴² 2026¹³

HealthCare.gov
800-318-2596

State Exchange Profile: Oklahoma
The Henry J. Kaiser Family Foundation overview of Oklahoma’s progress toward creating a state health insurance exchange.

Oklahoma Insurance Department
Assists people insured by private health plans, Medicaid, or other plans in resolving problems pertaining to their health coverage; assists uninsured residents with access to care. (405) 521-2991 / Toll Free in OK: (800) 522-0071 / [email protected]