How to Choose a Health Insurance Plan: Premiums, Deductibles and Out-of-Pocket Max

Updated Oct 27, 2026 3 min read By the WieHow – Home, Energy & Money Guides editorial team
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Quick answer

Compare plans by your expected total cost for the year: premiums plus what you would pay for care. Low-premium, high-deductible plans suit healthy people with an emergency fund; plans with higher premiums and lower deductibles suit those who expect regular care. Always check the out-of-pocket maximum — it is your worst-case cost.

On this page
  1. The four key numbers
  2. Compare total yearly cost
  3. HSA: a tax bonus for high-deductible plans
  4. Check the network
  5. Marketplace plans and subsidies

Whether you choose through your employer or the Health Insurance Marketplace, health plans can look confusing. Four numbers tell you most of what you need to know.

The four key numbers

  • Premium: what you pay every month, whether you use care or not.
  • Deductible: what you pay for covered care before the plan starts sharing costs (preventive care is usually covered before the deductible).
  • Copay / coinsurance: your share after the deductible — a fixed fee per visit or a percentage of the bill.
  • Out-of-pocket maximum: the most you pay in a year for covered in-network care. After that, the plan pays 100%.

Compare total yearly cost

Plan A (high deductible)Plan B (low deductible)
Monthly premium$250$450
Yearly premiums$3,000$5,400
Deductible$4,000$1,000
Out-of-pocket max$7,500$5,000
Cost in a healthy yearabout $3,000about $5,400
Worst case$10,500$10,400

In this example the high-deductible plan saves $2,400 in a healthy year and costs about the same in the worst case. If you expect surgery, a pregnancy or ongoing treatment, run the numbers with your expected costs.

HSA: a tax bonus for high-deductible plans

If your plan qualifies as a high-deductible health plan (HDHP), you can contribute to a Health Savings Account. Contributions are tax-deductible, growth is tax-free, and withdrawals for medical expenses are tax-free. Unused money rolls over every year and can be invested — many people treat it as an extra retirement account.

Compound Interest CalculatorSee how your savings grow over timeTry the calculator →

Check the network

HMOs usually require you to stay in network and get referrals; PPOs cost more but let you see out-of-network providers at higher cost. Before enrolling, confirm that your doctors, preferred hospital and prescriptions are covered.

Marketplace plans and subsidies

If you don't have affordable coverage through work, you can buy a plan at HealthCare.gov or your state's marketplace during open enrollment, which in most states starts November 1. Premium tax credits depend on your income and household size; check the current rules for your situation, because subsidy levels have changed over time.

Tip: Silver plans on the marketplace can come with extra cost-sharing reductions if your income is low enough. They may give you lower deductibles than a gold plan at a silver price.

Frequently asked questions

What happens if I miss open enrollment?

You can enroll outside open enrollment only with a qualifying life event, such as losing other coverage, moving, marriage or having a baby — usually within 60 days.

Is preventive care free?

Most plans must cover many preventive services, such as annual checkups and recommended screenings, without cost-sharing when you use an in-network provider.

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