Short answer: The premium is only what you pay to have coverage. Your total cost also includes the deductible, copays, and coinsurance you pay when you use care, up to the out-of-pocket maximum. A low-premium plan can cost more overall if you use a lot of care.
It’s a common mistake to compare plans on premium alone. Your real cost has two parts: the premium (the fixed monthly amount you pay no matter what) and your cost-sharing when you actually use care (deductible, copays, coinsurance), which is capped each year by the out-of-pocket maximum.
A useful way to compare: estimate your total annual cost as premium + expected out-of-pocket spending. A high-deductible plan with a low premium is often cheapest if you rarely use care, while a higher-premium, low-deductible plan can win if you expect significant medical costs. The right answer depends on your expected utilization, not the sticker premium.
Sources
- CMS, HealthCare.gov Glossary; Employee Benefits KB (Coverage Mechanics, cost-sharing).
Content history
Originally published: June 16, 2026
Last reviewed: June 16, 2026