You pay a monthly premium to have insurance at all. When you get care, you pay out of pocket until you hit your deductible, then insurance starts sharing the cost. Copays are small set fees for visits. Once you reach your out-of-pocket max, insurance covers 100% for the rest of the year.
The four words that matter
- Premium — what you pay every month just to have the plan, even if you never see a doctor.
- Deductible — what you pay yourself before insurance starts chipping in.
- Copay / coinsurance — your share of a visit or service after the deductible (a flat fee or a percentage).
- Out-of-pocket maximum — the most you'll pay in a year; after that, insurance pays 100%.
Lower monthly premium usually means a higher deductible (you pay more when you actually need care), and vice versa. If you're young and healthy, a higher-deductible plan can be cheaper overall — just keep an emergency fund for the deductible.
In-network vs. out-of-network
Insurers negotiate prices with certain doctors and hospitals — those are in-network and cost you far less. Going out-of-network can mean much bigger bills. Always check that a provider is in your network before an appointment.
How to get covered
Most people get insurance through a job (during 'open enrollment' or when newly hired), through the government marketplace, or — if you're under 26 — by staying on a parent's plan. Don't go uninsured if you can avoid it; one ER trip can cost more than a year of premiums.
Common questions
What's an HSA/FSA?
Accounts that let you set aside pre-tax money for medical costs. An HSA (paired with a high-deductible plan) is especially handy and the money rolls over.
Can I stay on my parents' plan?
Generally yes, until you turn 26 — even if you're working, married, or living elsewhere.