Most people choose a health plan by looking at one number: the monthly premium. That’s how they end up with a “cheap” plan that costs them thousands when they actually need care. The real cost of a plan comes from four numbers working together — and once you see how they fit, comparing plans gets a lot easier.
Key takeaways
- Premium = what you pay every month just to have coverage.
- Deductible = what you pay for covered care before the plan starts sharing costs.
- Copay / coinsurance = your share of each bill after (or sometimes before) the deductible.
- Out-of-pocket maximum = the most you’ll pay for covered in-network care in a year. For 2027 Marketplace plans the federal cap is $12,000 for an individual and $24,000 for a family.
- Your true yearly cost = premiums + what you pay when you use care, never just the premium.
1. Premium: the price of admission
Your premium is the amount you pay — usually monthly — to keep your insurance active. You pay it whether you see a doctor twelve times or never. If you get coverage through work, it’s typically taken out of your paycheck. If you buy your own plan on HealthCare.gov or a state marketplace, you pay it to the insurer, minus any premium tax credit you qualify for.
Important: the premium does not count toward your deductible or out-of-pocket maximum. It’s a separate bucket of money.
2. Deductible: what you pay before the plan kicks in
The deductible is how much you pay for covered services each year before your plan starts paying its share. If your deductible is $3,000 and you have a $1,200 MRI in February, you pay the full negotiated price of $1,200. You now have $1,800 left to go before the plan starts sharing costs.
Two details trip people up:
- Preventive care is usually free. Under the Affordable Care Act, most plans cover recommended preventive services — annual checkups, many screenings and vaccines — at no cost when you use an in-network provider, even before you meet your deductible.
- Some services skip the deductible. Many plans charge a flat copay for doctor visits or generic drugs from day one. Check the plan’s Summary of Benefits and Coverage (SBC) to see which services are “deductible applies” and which aren’t.
3. Copay: a flat fee per service
A copay (copayment) is a fixed dollar amount you pay for a specific service — for example, $30 for a primary care visit, $60 for a specialist or $15 for a generic prescription. Copays are predictable, which is why many people like plans that use them for everyday care.
4. Coinsurance: a percentage of the bill
Coinsurance is your share of a bill expressed as a percentage, and it usually applies after you’ve met your deductible. With 20% coinsurance, if a covered hospital stay costs $10,000 after your deductible is met, you pay $2,000 and the plan pays $8,000 — until you hit your out-of-pocket maximum.
5. Out-of-pocket maximum: your financial safety net
The out-of-pocket maximum (or out-of-pocket limit) is the most you’ll pay in a plan year for covered, in-network care. Your deductible, copays and coinsurance all count toward it. Once you reach it, the plan pays 100% of covered in-network services for the rest of the year.
| Federal out-of-pocket cap (Marketplace & most plans) | Individual | Family |
|---|---|---|
| 2026 | $10,600 | $21,200 |
| 2027 | $12,000 | $24,000 |
Watch out for 2027 bronze plans: new federal rules allow some 2027 bronze plans to set out-of-pocket limits up to $15,600 for an individual, as long as the insurer also offers plans in the area within the standard $12,000 cap. Always check the actual limit on the plan you’re considering.
Two things don’t count toward the out-of-pocket maximum: your premiums, and care from out-of-network providers (unless your plan specifically covers it). Stay in network whenever you can.
Putting it together: one year, two plans
Here’s a simplified example for one person comparing two plans. (Numbers are illustrative — real plans vary.)
| Plan A (low premium) | Plan B (higher premium) | |
|---|---|---|
| Monthly premium | $320 | $470 |
| Deductible | $7,000 | $2,000 |
| Coinsurance after deductible | 40% | 20% |
| Out-of-pocket max | $10,000 | $7,000 |
| Light year (a few visits, $800 of care) | $3,840 + $800 = $4,640 | $5,640 + $800 = $6,440 |
| Heavy year (surgery, $40,000 of care) | $3,840 + $10,000 = $13,840 | $5,640 + $7,000 = $12,640 |
Plan A wins in a healthy year. Plan B wins if something big happens. Neither is “better” — the right choice depends on how much care you expect to use and how much risk you can afford to carry.
How to use this when comparing plans
- Add up 12 months of premiums. That’s your guaranteed cost.
- Estimate your usual care. Regular prescriptions, specialist visits, therapy, planned procedures.
- Calculate a worst case. Annual premiums + out-of-pocket maximum. Could you handle that number?
- Check your doctors and drugs. A cheap plan that doesn’t include your doctor or covers your medication poorly isn’t cheap.
- Look at HSA eligibility. A qualifying high-deductible plan lets you save pre-tax money for medical costs — up to $4,500 for self-only coverage in 2027. See HSAs explained and how metal tiers compare.
Quick glossary
- Allowed amount: the price your insurer has agreed to pay for a service. Your cost-sharing is based on this, not the provider’s list price.
- In-network: doctors and facilities with a contract with your plan. Usually much cheaper.
- Embedded deductible: on a family plan, each person has their own deductible inside the family total, so one person’s big bills trigger coverage sooner.
- SBC: Summary of Benefits and Coverage — the standardized document every plan must provide. It’s the fastest way to compare.
The bottom line
Don’t judge a plan by its premium alone. Look at the deductible, how copays and coinsurance work, and especially the out-of-pocket maximum — then picture both a quiet year and a bad one. The plan that leaves you comfortable in both is usually the right one.
Next: 11 smart ways to lower your health insurance premium and key 2027 open enrollment dates.
5 common mistakes when comparing costs
- Comparing premiums only. The cheapest monthly price often comes with the highest deductible and out-of-pocket limit.
- Ignoring the drug list. A plan can look cheap until you discover your medication is in a high-cost tier — or not covered at all. Check the formulary for every prescription you take.
- Assuming out-of-network care counts. On most HMOs and EPOs it isn’t covered at all, and on PPOs it usually has a separate, higher limit.
- Forgetting the deductible resets. Most individual plans reset on January 1. A big procedure in December and another in January can mean paying two deductibles.
- Not planning for the worst case. If you couldn’t pay the out-of-pocket maximum in a bad year, a lower-deductible plan may be worth the higher premium.
Frequently asked questions
Do my premiums count toward my deductible?
No. Premiums are the price of having coverage. They don’t count toward your deductible or your out-of-pocket maximum. Only the money you pay for covered care — deductibles, copays and coinsurance — counts.
Do copays count toward my deductible?
Usually not, but it depends on the plan. On most plans, copays don’t reduce your deductible, but they do count toward your out-of-pocket maximum. Your plan’s Summary of Benefits and Coverage spells this out, and your Explanation of Benefits shows how each claim was applied.
When does my deductible reset?
Marketplace and most individual plans reset on January 1. Employer plans reset at the start of the employer’s plan year, which may be a different month. If you switch plans mid-year, you usually start a new deductible.
What happens after I reach my out-of-pocket maximum?
Your plan pays 100% of covered, in-network services for the rest of the plan year. You still pay your monthly premium, and you may still owe for non-covered services or out-of-network care.
Is a low-deductible plan always better?
No. Low-deductible plans cost more every month. If you rarely use care, you may pay more in extra premiums than you’d ever save. They make the most sense if you expect regular doctor visits, ongoing prescriptions or a planned procedure.
Is preventive care really free?
Most ACA-compliant plans cover recommended preventive services — like annual wellness visits, many cancer screenings and routine vaccines — at no cost when you use an in-network provider. But if a preventive visit turns into treatment for a problem, that part may be billed normally.
Sources: HealthCare.gov glossary; CMS 2027 Notice of Benefit and Payment Parameters; IRS Revenue Procedure 2026-24. This article is for education only and isn’t insurance or financial advice. Plan details vary — always check a plan’s Summary of Benefits and Coverage.
