Health Insurance Basics: Premiums, Deductibles, and Out-of-Pocket Max
Understand the three numbers that determine what a health plan really costs you.
The four numbers that matter
Every health plan boils down to: premium (monthly cost), deductible (you pay first), coinsurance/copay (you share costs after deductible), and out-of-pocket maximum (your cap for the year). Compare plans across all four, not just premium.
How HDHPs work
High-deductible health plans (HDHPs) pair low premiums with high deductibles. They make sense if you're generally healthy, can comfortably cover the deductible from savings, and want HSA eligibility. They're risky if you can't afford the deductible.
The HSA advantage
An HSA paired with an HDHP is the only triple-tax-advantaged account in the US tax code: deductible contributions, tax-free growth, tax-free withdrawals for medical expenses. Treat it as a stealth retirement account if you can afford to leave the balance invested.
Network matters more than people think
Out-of-network costs are often catastrophic even with insurance. Before choosing a plan, verify your current doctors, hospital, and any specialists you anticipate are in-network.
Don't pick on premium alone
Add expected annual premium to a realistic estimate of out-of-pocket costs. The 'cheap' plan often becomes the most expensive when you actually use healthcare.
Frequently asked questions
What if I'm self-employed?
ACA marketplace plans, professional association plans, and health-sharing ministries are common options. Compare carefully — coverage varies.
Is gold/platinum always better?
Not necessarily. Higher metal tiers cost more in premium for lower out-of-pocket exposure. Match to expected usage.
Should I keep COBRA after leaving a job?
Often expensive. Compare to marketplace plans before defaulting to COBRA.