Health Insurance

Quick Definition

Health insurance is a contract with an insurance company that pays a share of your medical expenses, including doctor visits, hospital stays, surgeries, diagnostic tests, and prescription drugs, in exchange for a monthly premium. You also share costs through deductibles (first-dollar responsibility), copays (fixed amounts per visit), and coinsurance (percentage splits), up to an annual out-of-pocket maximum.

What It Means

The United States spends more on healthcare per person than any other developed country. Without insurance, a single hospitalization can cost $30,000 to $100,000 or more. A cancer diagnosis can exceed $500,000. Health insurance is not optional for most Americans: it is financial protection against the most common cause of personal bankruptcy in the US.

The US health insurance system is uniquely fragmented. Most working-age Americans get coverage through employers. Seniors get coverage through Medicare. Low-income individuals get coverage through Medicaid. Self-employed or uninsured individuals buy coverage through ACA marketplace plans.

The US Health Insurance Landscape (2026)

Sources: KFF 2025 Employer Health Benefits Survey, CMS Medicaid Enrollment Data (March 2026), CDC NHIS 2025.

Types of Health Insurance Plans

HMO vs. PPO, the core trade-off:

• HMO: Lower premium, lower out-of-pocket. Requires choosing a primary care physician (PCP) who coordinates all care. Referrals required for specialists. No out-of-network coverage except emergencies.
• PPO: Higher premium. Freedom to see any provider. No referrals needed. Out-of-network covered at worse rates.

The ACA (Affordable Care Act) Framework

The ACA (2010) transformed individual health insurance in the US:

2026 ACA Changes: Enhanced Subsidy Expiration

The enhanced premium tax credits established by the American Rescue Plan in 2021 and extended through 2025 by the Inflation Reduction Act expired at the end of 2025. This has had a significant impact on the ACA marketplace in 2026:

Source: KFF, "What We Know So Far About 2026 ACA Marketplace Enrollment, Premiums, and Deductibles"

The average deductible increase of $1,027 per person is the steepest ever recorded in the ACA marketplace. This reflects many enrollees shifting from silver plans (which include cost-sharing reductions for lower-income enrollees) to bronze plans (which have lower premiums but higher deductibles) to offset the loss of enhanced subsidies.

The average unsubsidized premium for a 40-year-old on a silver plan is $752 per month nationally in 2026, up 21% from $621 in 2025. After federal subsidies, the average net premium is $178 per month, up from $113.

Source: ValuePenguin, Average Health Insurance Cost in 2026

How Employer-Sponsored Insurance Works

Most working Americans receive health insurance through their employer. According to the KFF 2025 Employer Health Benefits Survey:

Family premiums rose 6% in 2025, nearing $27,000 annually. Workers contributed an average of $6,850 toward family coverage from their paychecks. Over the last five years, family premiums have increased 26%, compared to 28.6% growth in wages and 23.5% inflation.

Tax advantage of employer insurance: Employee premium contributions are pre-tax under Section 125. A $500/month contribution saves a 24% bracket employee $120/month in federal income tax alone, plus state and FICA taxes.

Medicare: Coverage for 65+

The 2026 Part B premium increased by $17.90 (9.7%) from 2025. The annual deductible rose to $283 from $257. Approximately 8% of Part B enrollees pay higher income-related premiums (IRMAA) because their modified adjusted gross income exceeds $109,000 (individual) or $218,000 (joint).

Source: CMS, 2026 Medicare Parts A & B Premiums and Deductibles

Medicaid: Coverage for Low-Income Americans

As of March 2026, 74.3 million people were enrolled in Medicaid and CHIP combined (67.1 million in Medicaid, 7.2 million in CHIP). This is down 4.8 million (6%) from March 2025, continuing the enrollment declines following the end of continuous enrollment provisions.

Key facts about Medicaid:

• Federal-state partnership; states administer with federal matching funds
• Expanded under ACA to cover adults up to 138% FPL (federal poverty level). 40 states plus DC have expanded as of 2026.
• Non-expansion states: coverage limited to very low-income parents and disabled individuals; childless adults largely excluded
• Benefits: comprehensive coverage including dental and vision in many states
• No premiums for most beneficiaries; very low cost-sharing
• Enrollment has declined in all states since March 2025, with decreases ranging from 20% in Indiana to less than 1% in Iowa

Source: KFF Medicaid/CHIP Monthly Enrollment Tracker

The CMS Office of the Actuary projects the uninsured rate will rise from 7.7% in calendar year 2025 to 8.7% in 2026, primarily due to the decline in ACA marketplace enrollment following the expiration of enhanced subsidies.

Cost Components: Understanding Your True Exposure

The ACA out-of-pocket maximum for 2026 is $9,200 for individual coverage and $18,400 for family coverage. Once you hit this limit, the insurance company pays 100% of covered in-network expenses for the rest of the year.

HDHP and HSA: A Special Case

A High Deductible Health Plan (HDHP) paired with a Health Savings Account (HSA) is one of the most tax-efficient combinations available:

• HDHP: Lower monthly premiums, higher deductible (minimum $1,700 single / $3,400 family in 2025)
• HSA: Triple tax advantage (tax-deductible contributions, tax-free growth, tax-free withdrawals for qualified medical expenses)
• 2026 HSA contribution limits: $4,400 individual / $8,750 family
• HSA funds roll over year to year and are portable if you change jobs

For healthy individuals with an emergency fund, the HDHP+HSA combination often produces the lowest total cost of care while building a tax-advantaged medical retirement fund.

Key Points to Remember

• Health insurance is the most important personal insurance: medical costs are the leading cause of US bankruptcy
• Employer-sponsored plans cover ~48% of Americans, with employers paying ~70-80% of premiums. Family coverage costs nearly $27,000/year in 2025.
• ACA eliminated pre-existing condition exclusions, but 2026 saw a major enrollment decline after enhanced subsidies expired. Average deductibles jumped 37% to $3,786.
• Medicare Part B premium rose to $202.90/month in 2026, with a $283 annual deductible
• Medicaid enrollment declined to 67 million as the post-pandemic unwinding continued
• HDHP + HSA offers the best tax efficiency for healthy individuals with emergency funds

Common Mistakes to Avoid

• Only looking at the premium when choosing a plan: A plan with a $50/month lower premium but a $3,000 higher deductible can cost far more if you need medical care during the year. Always calculate total potential exposure: premium + deductible + out-of-pocket maximum.
• Ignoring network size: A cheap plan with a narrow network can leave you paying out-of-network rates for the specialists you actually need. Check whether your doctors and preferred hospital are in-network before enrolling.
• Not using an HSA when eligible: If you have an HDHP, you should contribute to an HSA. The triple tax advantage is unmatched by any other savings vehicle. Many employers also contribute to employee HSAs, which is free money if you do not enroll.
• Assuming your ACA subsidy will stay the same: The enhanced premium tax credits expired at the end of 2025. If you buy coverage on the ACA marketplace, your net premium may have increased significantly in 2026. Review your plan during open enrollment every year.
• Going out-of-network without realizing it: Out-of-network anesthesiologists, radiologists, and assistant surgeons are common sources of surprise billing. Before any planned procedure, verify that every provider involved is in-network.

Frequently Asked Questions

Q: What is the penalty for not having health insurance? A: The federal individual mandate penalty was reduced to $0 starting in 2019, so there is no federal tax penalty for being uninsured. However, some states (California, Massachusetts, New Jersey, Rhode Island, DC, Vermont) have their own individual mandates with financial penalties. Even without a penalty, being uninsured is financially dangerous. One hospitalization can create tens of thousands in debt.

Q: How do I choose between an HMO and PPO? A: If cost is the priority and you are comfortable using a primary care physician to coordinate care, an HMO often saves $1,000 to $2,000 per year in premiums. If you see multiple specialists, have an established specialist relationship you want to keep, or want flexibility, a PPO's additional cost may be worth it. For most healthy young adults, an HMO or HDHP is the most cost-effective choice.

Q: What is a network and why does it matter? A: An insurance network is the group of doctors, hospitals, and facilities that have agreed to provide services at negotiated rates for plan members. In-network providers have contracted discounts, so you pay much less than the sticker price. Out-of-network providers charge their full rates, which your insurance may cover at a worse rate or not at all. Before any planned procedure, verify that every provider involved (surgeon, anesthesiologist, facility) is in-network.

Q: How much does health insurance cost per month in 2026? A: For ACA marketplace plans, the national average for a 40-year-old on a silver plan is $752/month before subsidies. After subsidies, the average net premium is $178/month. For employer-sponsored plans, the average employee pays $120/month for single coverage and $571/month for family coverage, with the employer covering the remainder of the $9,325 (single) or $26,993 (family) total annual premium.

Q: Should I get a high-deductible plan with an HSA? A: If you are generally healthy, have an emergency fund to cover the higher deductible, and want to save on premiums while building a tax-advantaged medical fund, an HDHP with an HSA is an excellent choice. The HSA's triple tax advantage (deductible contributions, tax-free growth, tax-free medical withdrawals) makes it the most tax-efficient savings account in the US tax code. If you expect high medical expenses in the coming year, a lower-deductible plan may save you more overall.