ACA Health Insurance Costs Explained: Premiums, Deductibles, and What You Actually Pay

3 min read

Most people look at the monthly premium first, but it rarely tells the whole story. What you pay for health coverage in a year is a mix of several different costs. Understanding how they work together makes it much easier to judge what a plan may really cost you.

The Five Costs to Know

Premium. The amount you pay each month to keep your coverage active, whether or not you use care. Financial help, if you qualify, is usually applied here to lower the monthly amount.

Deductible. The amount you pay for covered services before the plan starts sharing costs. Some services, such as certain preventive care, may be covered before you reach it.

Copay. A fixed amount you pay for a specific service, such as a doctor visit or prescription, often after any deductible applies.

Coinsurance. A percentage of the cost you pay after meeting the deductible. If your coinsurance is 20%, you pay 20% of the allowed cost and the plan pays 80%.

Out-of-pocket maximum. The most you would pay for covered, in-network care in a plan year. Once you reach it, the plan generally pays 100% of covered in-network costs for the rest of the year. Your premium does not count toward it.

A Simple Example

Imagine a plan with a $400 monthly premium, a $3,000 deductible, 20% coinsurance, and a $8,000 out-of-pocket maximum. Over a year you would pay $4,800 in premiums no matter what. If you have a $10,000 hospital stay, you would first pay the $3,000 deductible, then 20% of the remaining $7,000, or $1,400, for $4,400 in cost sharing. Your total for the year would be $9,200. In a year with no care, you would pay only the $4,800 in premiums.

The numbers are only an illustration. Real plans differ, but the structure is the same.

How Costs Change With Care

  • Little care in a year: the premium is most of your cost, so a lower-premium plan can look better.
  • Regular care in a year: deductibles and copays add up, so a plan with a higher premium but lower cost sharing may cost less overall.
  • A major event: the out-of-pocket maximum is your protection. It limits what you pay for covered in-network care.

Where Financial Help Fits In

Many households qualify for premium tax credits that lower the monthly premium, and some qualify for cost-sharing reductions that lower deductibles and copays. The amount depends on household size, income, and where you live. Our guide to premium tax credits explains how that works.

Costs That Do Not Show Up in the Premium

  • Care from out-of-network providers, which may cost more or not be covered
  • Prescriptions that are not on the plan's drug list
  • Services the plan does not cover

A Quick Checklist

  1. Add up twelve months of premiums.
  2. Add the deductible and the out-of-pocket maximum to see the range of possible costs.
  3. Check how copays and coinsurance apply to the services you expect to use.
  4. Confirm that your doctors and prescriptions are covered.

Sources and Further Reading

Frequently Asked Questions

What is the difference between a deductible and an out-of-pocket maximum?

The deductible is what you pay before the plan starts sharing costs. The out-of-pocket maximum is the most you would pay in a year for covered in-network care.

Do premiums count toward the deductible?

No. Premiums are separate and do not count toward your deductible or out-of-pocket maximum.

Is a lower premium always cheaper?

Not necessarily. A lower premium often comes with higher cost sharing, which can cost more in a year with significant care.

What is coinsurance?

It is the percentage of a covered cost you pay after meeting your deductible.