Health insurers across the individual, small-group and large-group markets expect to send back just over $759 million in premium rebates this year, with rebate checks or notices required to go out by the end of September. The payments come from the Affordable Care Act’s medical loss ratio rule, which forces insurers that keep too large a share of premium dollars for overhead and profit to return the excess to the people and employers who paid it. This year’s total trails the $958 million refunded in 2024 and the $1.6 billion refunded in 2025, but it still lands on top of more than $14 billion sent back since 2012.
The Medical Loss Ratio Rule Behind the 2026 Rebates
The medical loss ratio requirement, part of the Affordable Care Act, sets a floor on how much of every premium dollar an insurer must spend on medical claims and quality improvement instead of administration, marketing or profit. Individual-market and small-group insurers must clear an 80 percent threshold; large-group insurers must clear 85 percent. An insurer that falls short of its threshold in a given year owes the difference back to the people and businesses that paid the premiums, calculated as a share of the shortfall rather than a flat penalty.
KFF researchers Cynthia Cox, Matt McGough and Jared Ortaliza, using preliminary data insurers reported to state regulators, estimate insurers will issue just over $759 million in rebates across the individual, small-group and large-group markets in 2026, with rebates or rebate notices required to go out by the end of September. Their analysis draws on a three-year average of each insurer’s 2023, 2024 and 2025 financial results, so a company that ran high margins in the first two years of that window can still owe a rebate even if its 2025 claims costs climbed.
CMS has enforced the rebate requirement every year since 2012, describing the rule as one of the Affordable Care Act’s core protections against insurers keeping premium dollars that were never spent on patient care. The requirement applies to fully insured individual, small-group and large-group plans, but not to self-funded employer plans, which cover roughly two-thirds of people with job-based coverage and fall outside the medical loss ratio rule entirely.
Where the help is written down: The programs that lower Medicare costs each run on a different form and a different office, and no single notice lists them together. See the state cost-help packs in The Medicare Cost & Coverage Protection Kit.
How the Rebate Reaches Individual and Small-Group Policyholders
Insurers pay the rebate either as a check mailed directly to the policyholder or as a credit applied to a future premium bill, and no one has to file a claim or apply to receive it. People with individual-market coverage have the choice made by their insurer, while people with job-based coverage may see the rebate split between the employer and the employee depending on how the two share the cost of premiums. The rebate goes only to people who held commercial coverage in 2025 with an insurer whose three-year average fell short of its threshold, so someone who switched or dropped coverage before that plan year is not automatically entitled to a payment.
Individual-market enrollees make up a large share of who benefits from this cycle’s rebates, and older adults are heavily represented in that market segment because Affordable Care Act plans are frequently the coverage option people use in the years before they qualify for Medicare at 65. A rebate arriving as a premium credit lowers next month’s bill directly, while a mailed check requires no additional paperwork on the recipient’s part, a distinction that matters for anyone managing a fixed monthly budget around Social Security or a pension.
Not every shortfall becomes a mailed check. Insurers are not required to process a rebate if it would come to less than $5 for an individual policyholder or less than $20 for a group plan, a de minimis threshold meant to avoid administrative costs that would exceed the payment itself. Average rebate amounts have run well above that floor in recent cycles, at $233 per person in the individual market and $190 per person in the small-group market during the 2025 payout, though this year’s smaller total suggests the 2026 per-person average will likely land lower.
A Smaller Total Than Recent Years, Still Adding to $15 Billion Since 2012
This year’s total is well below recent cycles. Insurers refunded $958 million in 2024 and $1.6 billion in 2025, and both years pale next to the record $2.5 billion returned in 2020 and $2.1 billion returned in 2021, when high 2018 marketplace margins were still working their way through the three-year averaging formula. The current $759 million reflects what KFF describes as a period of margin normalization, in which insurers that once overpriced plans have brought premiums back in line with what enrollees actually spend on care.
Since the ACA first required these rebates in 2012, insurers have issued $14.4 billion to individuals and employers, and KFF’s researchers project the running total will reach about $15.1 billion once the 2026 rebates go out. CMS separately publishes the state-by-state accounting of what each insurer owes, a final tally that follows the preliminary estimates insurers have already reported to state regulators.
Heading into 2026, marketplace premiums rose more than 20 percent on average, the steepest increase since 2018, and KFF’s analysis notes that if insurers priced this year’s plans higher than what enrollees end up spending on medical care, the overcharge would not show up as a rebate until the 2027 cycle. The individual market’s average simple loss ratio climbed to 93 percent in 2025, up from the prior year, a signal that insurers were already paying out more of every premium dollar in claims before this year’s steep price increases took effect, a trend Cox and her coauthors say will shape how large the next round of rebates turns out to be.
Premium Rebates and the Rest of the Health-Cost Ledger
Medical loss ratio rebates only apply to private commercial insurance, so the mechanism disappears entirely once someone moves onto Medicare, where cost management runs through a different set of forms and deadlines. Medicare enrollees instead navigate premium surcharges tied to income, a prescription drug spending cap, and prior authorization appeals that have nothing to do with an insurer’s loss ratio. Tracking those separate moving pieces state by state is its own ongoing task, distinct from the one-time rebate check described above.
The Medicare Cost & Coverage Protection Kit is a 10-page kit built around 51 state Medicare cost-help packs and a plain-language walkthrough of the new Part D out-of-pocket cap.
Open the new Part D out-of-pocket cap breakdown in The Medicare Cost & Coverage Protection Kit.
This article was researched and drafted with the assistance of AI and reviewed by The Money Overview editorial team.
