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

Your deductible is the amount you pay before insurance starts sharing costs. Your out-of-pocket maximum is the total cap on what you pay in a year — once you reach it, insurance covers 100% of covered in-network care. The deductible is part of the OOP max, not separate from it.

Do premiums count toward the out-of-pocket maximum?

No. Monthly premiums, out-of-network charges, and non-covered services typically do not count toward your out-of-pocket maximum. Only deductible payments, coinsurance, and copays for in-network covered services count.

Insurance

Understanding Your Health Insurance Out-of-Pocket Costs

Updated September 2026 · 8 min read

When you look at a health insurance plan, you see a monthly premium — but that is just the beginning of what you will actually pay. The real cost of healthcare depends on four interlocking mechanisms: your deductible, coinsurance, copays, and out-of-pocket maximum. Understanding how they work together is essential for choosing the right plan and budgeting for medical expenses.

The Four Cost-Sharing Components

1. Deductible

Your deductible is the amount you pay out of your own pocket before your insurance starts sharing costs. If your plan has a $2,000 deductible, you pay the first $2,000 of covered medical expenses yourself. After that, your plan starts paying its share through coinsurance.

Important exception: most plans cover preventive care (annual physicals, vaccinations, certain screenings) at 100% before the deductible under ACA rules. You do not need to meet your deductible first for preventive services.

2. Coinsurance

After you meet your deductible, coinsurance kicks in. This is a percentage split between you and your insurer. A common split is 80/20 — your insurer pays 80% of covered charges and you pay 20%. Some plans use 70/30 or 90/10 splits.

For example, if you have a $5,000 medical bill after meeting your deductible and your coinsurance is 20%, you pay $1,000 and your insurer pays $4,000.

3. Copays

A copay is a fixed dollar amount you pay for a specific service — $30 for a primary care visit, $50 for a specialist, $15 for a generic prescription. Copays are usually the same regardless of the actual cost of the service, and many plans charge copays even before you meet your deductible.

4. Out-of-Pocket Maximum

This is your financial safety net. The out-of-pocket maximum (OOP max) is the most you will pay for covered in-network care in a plan year. Once your deductible payments, coinsurance, and copays add up to this amount, your insurance covers 100% of covered care for the rest of the year.

For 2026, the ACA limits the OOP max to $10,600 for individual coverage and $21,200 for family coverage. For 2027 the limits rise to $12,000 and $24,000. Your plan may set a lower limit. See what you would pay with the Out-of-Pocket Calculator →

A Real Example: How It All Works Together

Imagine you have a plan with a $2,000 deductible, 20% coinsurance, $30 copays, and a $7,000 OOP max. You need surgery that costs $25,000.

First, you pay your $2,000 deductible. That leaves $23,000. Your coinsurance is 20%, so you owe $4,600 of the remaining $23,000. Your running total is now $6,600 ($2,000 + $4,600). Add in a few copays throughout the year ($400), and you hit $7,000 — your OOP max. Insurance covers 100% of any additional covered care for the rest of the plan year.

Without insurance, you would owe $25,000. With insurance, you owe $7,000 maximum. That is the value of the OOP max — it caps your worst-case scenario.

Try it yourself with our Insurance Out-of-Pocket Cost Calculator — enter your plan details and a medical bill to see the exact breakdown.

High-Deductible vs Low-Deductible Plans

Plans with higher deductibles have lower monthly premiums. Plans with lower deductibles have higher premiums. The trade-off is simple: do you want to pay more each month (low deductible) or risk paying more if you need care (high deductible)?

If you are generally healthy and rarely use medical services, a high-deductible health plan (HDHP) with an HSA often saves money overall. If you have chronic conditions or expect significant medical expenses, a low-deductible plan may cost less in total despite the higher premium.

Tips to Manage Your Out-of-Pocket Costs

Stay in-network: out-of-network charges may not count toward your OOP max and can be significantly higher
Use preventive care: covered at 100% before the deductible — take advantage of it
Use an HSA or FSA: pay your cost-sharing with pre-tax dollars to reduce the real impact by 25-40%
Ask for cost estimates: before procedures, ask your provider and insurer for a cost estimate
Build an emergency fund: our Medical Emergency Fund Calculator can help you size the right target

Sources: Healthcare.gov, CMS Summary of Benefits and Coverage standards, ACA out-of-pocket maximum rules. This article is for educational purposes only.