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A 40-year-old buying a Silver plan on the ACA marketplace pays about $605 a month in 2026, before subsidies. A 21-year-old pays about $473 for the same plan. Those two numbers tell you most of what you need to know: age moves the price more than anything else.
Average health insurance cost by age in 2026
The figures below are 2026 national averages for Silver plans, from Investopedia’s rate analysis:
| Age | Silver plan per month |
|---|---|
| 21 | $473 |
| 27 | $497 |
| 30 | $538 |
| 40 | $605 |
| 50 | $846 |
| 60 | $1,284 |
Federal rules let insurers charge older adults up to three times what they charge a 21-year-old, and the table shows that rule playing out. The steepest climb comes between 50 and 60, when premiums rise more than 50 percent in a single decade.
What the different plan tiers cost
The metal tiers trade monthly premium against what you pay when you need care. For a 40-year-old, 2026 averages look like this: Bronze $445, Silver $605, Gold $653, Platinum $1,193. Catastrophic plans, which are only available to people under 30, run about $286 a month at age 21.
Bronze costs 20 to 30 percent less per month than Silver but leaves you with a much higher deductible. Gold costs 15 to 20 percent more than Silver and cuts what you pay at the doctor’s office. Silver sits in the middle, which is why it is the benchmark most averages are quoted against.
Where you live changes the number
KFF’s 2026 benchmark analysis puts the cheapest states for a 40-year-old at New Hampshire ($410), Maryland ($414), and Minnesota ($448) a month. The most expensive are Vermont ($1,299), Wyoming ($1,090), and West Virginia ($1,073). Fewer competing insurers, older insured populations, and thin rural markets all push a state’s average up.
What most people actually pay after subsidies
The sticker prices above are before premium tax credits, and most marketplace buyers get one. CMS data shows the average enrollee receiving a credit pays about $92 a month, with the lowest-cost plans running around $50 a month after credits. Anyone earning up to 400 percent of the federal poverty level qualifies for some subsidy, so check your number at healthcare.gov before you judge any plan by its sticker price.
Which companies charge the most and least
ValuePenguin’s 2026 analysis of a 40-year-old on a Silver plan found Kaiser Permanente cheapest at $595 a month and UnitedHealthcare most expensive at $819. Ambetter ($710) and Blue Cross Blue Shield ($793) sit in between. That ranking shuffles by state, though. The cheapest carrier nationally is rarely the cheapest in your zip code, so the company ranking matters less than comparing the actual quotes where you live.
The number that caps your worst year
The 2026 out-of-pocket maximum for individual marketplace plans is $10,600. That is the most you can be asked to pay in covered medical costs in a calendar year, no matter what happens. It is the figure that makes even an expensive plan worth having: it turns an unlimited risk into a known one.
How to pay less than the average
Check your subsidy first, before comparing plans. A subsidized Silver plan often beats an unsubsidized Bronze plan on total cost. If you are healthy and under 30, compare catastrophic coverage against Bronze. If you rarely need care and can fund a health savings account, Bronze plus an HSA frequently beats Silver over a full year. And re-shop every open enrollment. Insurers reprice annually, and last year’s cheapest plan is often this year’s middle of the pack.
If you are currently uninsured and weighing whether coverage is worth it at all, see what care actually costs without a plan: our guide to the cheapest way to see a doctor without insurance and the average cost of urgent care without insurance.
