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US Health Insurance Basics: Deductibles, Copays, and Out-of-Pocket Maximums

US health insurance plans lean heavily on a handful of terms that determine what you actually pay out of pocket. Here is what each one means.

Premium: what you pay just to have coverage

The premium is the regular amount, usually monthly, you or your employer pays to keep the insurance plan active, regardless of whether you use any medical care that month. It does not count toward your deductible or out-of-pocket maximum.

Deductible: what you pay before insurance kicks in

The deductible is the amount you must pay out of your own pocket for covered services before your insurance starts sharing costs, for most non-preventive care. Preventive care, like annual checkups, is often covered before the deductible under many plans.

Copay: a flat fee per visit or service

A copay is a fixed dollar amount, such as $25 for a primary care visit, that you pay at the time of a specific service, regardless of the total cost of that service.

Coinsurance: your percentage share of the cost

After you meet your deductible, coinsurance is the percentage of the remaining cost you are responsible for, such as 20%, with the insurance plan covering the rest, up to your out-of-pocket maximum.

Out-of-pocket maximum: the annual cap on what you pay

This is the most you will pay in a plan year for covered, in-network care through deductibles, copays, and coinsurance combined. Once you hit it, the plan covers 100% of covered in-network costs for the rest of the year. Premiums do not count toward this cap, and Affordable Care Act marketplace plans have a federally set annual limit on this maximum that is adjusted most years.

In-network vs. out-of-network

In-network providers have a negotiated rate agreement with your insurer, which usually means lower costs to you. Out-of-network care is often covered at a lower rate or not at all, depending on the plan type, so checking network status before a non-emergency visit can avoid a much larger bill.

Common plan types: HMO, PPO, and HDHP

An HMO typically requires using in-network providers and getting referrals for specialists, generally at a lower premium. A PPO offers more flexibility to see out-of-network providers at a higher cost. A high-deductible health plan (HDHP) has a lower premium and a higher deductible, and is often paired with a tax-advantaged Health Savings Account (HSA).

Why a lower premium is not automatically the better deal

A plan with a low premium often has a higher deductible and out-of-pocket maximum, shifting more cost to you if you end up needing significant care during the year. Someone who rarely uses medical care and someone managing an ongoing condition can genuinely come out ahead with different plans, which is why comparing the full cost structure, not just the premium, matters when choosing a plan.

These terms apply beyond employer coverage too

The same premium, deductible, copay, coinsurance, and out-of-pocket maximum structure generally applies to ACA marketplace plans purchased individually, not just employer-sponsored insurance, though the specific dollar amounts and available plan tiers differ by state and insurer.

Frequently Asked Questions

Do preventive care visits count toward my deductible?

Many plans, particularly those compliant with the Affordable Care Act, are required to cover a defined list of preventive services, like annual physicals and standard vaccinations, at no cost before the deductible applies. Coverage details still vary by plan, so it is worth confirming with your specific insurer.

What happens if I get emergency care at an out-of-network hospital?

Federal surprise-billing protections limit what many out-of-network emergency providers can bill you beyond your plan's in-network cost-sharing amounts in many situations, but rules and exceptions can be complex, so it is worth reviewing your plan's explanation of benefits and contacting your insurer if a bill looks unexpectedly high.

Does the out-of-pocket maximum include my monthly premium?

No. The out-of-pocket maximum only covers deductible, copay, and coinsurance amounts for covered care. Your monthly premium is a separate, ongoing cost that is never included in that cap.