For most families, the most visible impact of the Affordable Care Act (i.e. Obamacare) is their monthly healthcare premium. In the individual market, the ACA did not simply reshuffle who buys coverage, it rewired the rules of the market in ways that predictably drove prices up for many Americans, especially those who are younger, healthier, or simply trying to buy a plan that fits their needs and budget.¹
Heritage Foundation's state-by-state review finds that between 2013 and 2022, the ACA's mandates and regulations more than doubled the average cost of individual market coverage in 40 states, with some states seeing costs more than triple or quadruple over that period.¹ Even after accounting for subsidies that mask sticker shock for some enrollees, the underlying premium trend reflects a market that became less competitive, more standardized, and more fragile.
Diagnoses
Insurance only works when lots of people share risk, including those who are relatively healthy. The ACA disrupted that balance by forcing insurers to "socialize" costs through community rating and strict rating rules. Instead of letting premiums reflect risk in a normal way, the ACA compresses prices so younger and healthier people pay more than actuarially fair rates, while older and higher-cost enrollees pay less than they otherwise would.²
A central example is age-rating compression. Under the ACA, insurers generally cannot charge older adults more than three times what they charge younger adults for the same plan, even though underlying medical costs vary more than that. Heritage notes that natural medical cost variation among adults is closer to about five-to-one, meaning the ACA's three-to-one cap forces insurers to overprice younger adults and underprice older adults.³ Heritage also explains why this matters politically and economically: younger adults tend to be healthier, but they also tend to earn less, making them more price-sensitive and more likely to walk away when premiums rise.³
When healthy people opt out, the remaining pool becomes sicker and more expensive. That triggers the classic premium spiral: insurers raise premiums to cover a higher-cost pool, which drives still more healthy people away, which pushes premiums higher again.
This dynamic worsened when the federal individual mandate penalty was effectively eliminated beginning in 2019. Congress left the mandate language on the books, but zeroed out the penalty that was supposed to force broad participation.⁴
“While younger adults tend to be in better health, they also tend to earn less than older workers with more experience. That combination makes young adults more sensitive to changes in the price of health insurance and more likely to decline coverage if it becomes more expensive.”
The Affordable Care Act did not just change prices, it also changed what insurers are allowed to sell. The essential health benefits mandate and related benefit rules dramatically narrowed the ability to buy a lower-cost, tailored plan, even for people who would prefer a more basic policy with catastrophic protection. As Cato summarized, a McKinsey analysis commissioned by HHS estimated that the essential health benefits mandate increased premiums for 40-year-old males by up to 23 percent over four years.²
The practical effect is straightforward: when government requires richer coverage and prohibits lower-cost alternatives, premiums rise. Then, as premiums rise, the market becomes less attractive to healthier consumers, which further destabilizes the pool.
“The federal government will not let states pick a menu of essential health benefits … Since less regulation than the federal government would impose is not an option, implementing these parts of the law can only lead to more regulation, fewer choices, and higher costs.”
Even today, Americans generally cannot simply shop across state lines the way they do for many other financial products. The lived reality is that most individuals must buy in their home state's regulated market and provider network structure.
The Manhattan Institute has highlighted striking price disparities that track state borders. For example, in northeastern Oklahoma counties, benchmark exchange premiums were cited in the $600 to $700 range, while neighboring counties just across the Arkansas border were cited around $200 to $300 for comparable benchmark plans.⁵ When state lines function as hard walls, consumers cannot vote with their feet, and insurers face less pressure to compete on price and design.
“Health insurance premiums vary substantially between states, and there are often major price disparities in neighboring counties across state borders.”
The Affordable Care Act's medical loss ratio (MLR) is widely sold as a consumer protection, but it creates a perverse incentive in how insurers make money. The ACA requires insurers to spend at least 80 percent (individual and small group) or 85 percent (large group) of premium revenue on medical claims and quality improvement, with rebates required if they fall short.⁶
Paragon Health Institute argues this design can reduce the business incentive to fight underlying cost growth because the allowed "administration plus profit" amount rises when premiums rise. Put plainly, if an insurer's permitted non-claims share is a percentage of premium, then larger premiums can mean more dollars available for overhead and profit.⁷
This is one reason the insurance sector often adapts to the ACA by managing how costs are classified, shifting functions, and pursuing consolidation, rather than competing to deliver leaner, consumer-driven coverage. It also helps explain why the political system repeatedly reaches for subsidies to mask premium increases instead of fixing the rules that produce them in the first place.
“The ACA regulations drive higher costs. For example, under the medical loss ratio, insurers must spend a minimum share of premium revenue on medical claims. In other words, to increase profits, insurers must increase premiums.”
Prescriptions
Congress should repeal the MLR requirement. The goal should be to reward insurers for lowering costs and innovating on value, not to lock in a percentage-based structure that can make premium growth financially tolerable or even advantageous for incumbent carriers. Paragon's warning is simple: under the MLR structure, insurers can face incentives that align with higher premiums rather than lower ones.⁷
Short-term, limited-duration insurance (STLDI) has functioned as an escape valve from the ACA's most inflationary rules. Cato's December 2025 briefing paper describes how the 2018 Trump-era approach clarified that short-term plans could offer initial terms up to 12 months, extend up to 36 months total, and include renewal guarantees so people who get sick are not stranded.⁸
Cato also cites Congressional Budget Office analysis indicating that this relief enabled consumers to purchase a comprehensive major medical policy at premiums as much as 60 percent lower than the lowest-cost bronze exchange plan.⁸
By contrast, the 2024 Biden rule narrowed short-term coverage by restricting duration and limiting renewability, reducing the ability of these plans to function as stable protection for consumers.⁹ Congress should codify the rules implemented by Trump in his first term so they cannot be reversed by the next administration.⁸
A fair concern is that STLDI can draw healthier consumers away from ACA plans, raising premiums inside the exchange. That is not an argument to trap Americans in a broken system. It is an indictment of the ACA's design. If the exchange market cannot survive without restricting consumer exits, lawmakers should be honest about what that says.
Association Health Plans (AHPs) can let small employers and self-employed workers band together to access coverage options that look more like large-group purchasing, which can reduce administrative costs and widen plan design flexibility.
In December 2025, the House passed H.R. 6703, the "Lower Health Care Premiums for All Americans Act," which includes provisions to expand AHP access.¹⁰ ¹¹ Congress should build on this approach so working Americans have more ways to buy coverage outside the ACA's most expensive rule set.
Again, AHP growth can also pull healthier groups from the exchange. That is not a reason to block AHPs. It is further evidence that the ACA's regulated market is not meaningfully competitive and is being propped up by rules and subsidies rather than consumer value.
Congress should reestablish real competition in the individual market by treating health insurance as interstate commerce rather than a set of federally managed state monopolies. In many states, consumers face only a few dominant insurers, and market concentration has increased as competition has weakened.¹² Concentrated markets are widely recognized as a risk to affordability and choice, and federal ACA rules can compound the problem by standardizing plan design and insulating incumbents from new entrants.¹³
The ACA's supposed "across state lines" solution is mostly a mirage because it routes competition through a narrow, bureaucratic pathway. Under ACA Section 1333, states must pass authorizing laws and then navigate a compact framework that still operates inside a federally controlled ACA compliance regime, which is why the mechanism has produced little meaningful interstate shopping in practice.¹⁴ Conservative policy analysis has highlighted that this system is structurally cumbersome and politically unstable, with major regulations frequently reversed between administrations, which deters the long-term investment needed to build multi-state networks and offerings.¹⁵
A serious reform should replace the ACA compact model with simple reciprocity that allows a plan approved in one state to be sold in others without duplicative regulatory regimes, while preserving baseline solvency enforcement, fraud protections, and clear consumer disclosures.¹⁶ Congress should also preempt federal barriers that make "competition" meaningless by forcing every plan into the same Washington-designed box.¹⁷ Properly structured, interstate competition would invite more entrants, pressure legacy carriers to compete on price and service, and give families in high-cost states a real exit option. It will not magically fix every driver of medical costs, but it can break the cartel dynamics that keep premiums elevated and choices narrow.¹⁶ ¹³
One of the deepest distortions in American health care is the tax code's bias toward employer-sponsored insurance over individually chosen coverage. Congress should continue expanding Health Savings Accounts (HSAs), strengthen portability, and move toward equal tax treatment so individuals can buy the coverage that fits their family, not the plan their employer picked.
Separately, the White House Council of Economic Advisers reported in September 2025 that, effective January 1, 2026, the One Big Beautiful Bill Act reclassifies Bronze and Catastrophic ACA marketplace plans as qualifying high-deductible health plans, allowing many more enrollees to open and contribute to HSAs without changing plans.¹⁸ That change moves in the right direction: more personal control, more portability, and less dependence on one-size-fits-all coverage.
Congress should repeal the ACA's essential health benefits mandate and encourage states to unwind the growing list of benefit mandates that function as hidden premium taxes. These requirements force millions of people to buy coverage they do not want, and then Washington acts surprised that premiums rise and healthy consumers exit. The McKinsey estimates cited by Cato provide a concrete window into the premium impact of these mandates.²
A limited government system recognizes personal responsibility. While genetics and many medical conditions are not chosen, some risk drivers are strongly linked to lifestyle choices that materially raise system-wide costs.
For example, CDC data show adult obesity prevalence around 40.3 percent in 2021–2023.¹⁹ The ACA allows tobacco surcharges (within limits), but many jurisdictions restrict even that. Lawmakers should allow insurance markets to reflect certain controllable risk factors, paired with transparent consumer protections, so the system stops penalizing the responsible to subsidize avoidable risk.
Sources
1Heritage Foundation: The Effects of the ACA on Health Insurance Premiums
2Cato Institute: Trump Executive Order Could Save Millions from Obamacare
3Heritage Foundation: How Obamacare Raised Premiums
4Congressional Research Service: Individual Mandate Penalty
5Manhattan Institute: The Challenge of Selling Health Insurance Across State Lines
7Paragon Health Institute: Testimony on Assessing the Damage Done by Obamacare
8Cato Institute: Short-Term Health Insurance Briefing Paper
9Federal Register: Short-Term Limited Duration Insurance (2024)
11Congress.gov: H.R. 6703 - Lower Health Care Premiums for All Americans Act
12AMA: Competition in Health Insurance US Markets
13GAO: Health Insurance Costs and Market Concentration
14Federal Register: Sale of Individual Health Insurance Across State Lines (2019)
15American Experiment: Health Care Choice Compacts
16Manhattan Institute: Reforming Health Insurance Competition Across State Lines
17HHS: Reforming America's Healthcare System Through Choice and Competition