Deductible, Copay, and Coinsurance: What They Mean and How They Add Up
Health Insurance GuideYour deductible is what you pay first before insurance kicks in. A copay is a flat fee per visit. Coinsurance is a percentage you split with your insurer after you hit your deductible. All three count toward your out-of-pocket maximum.
Key Facts
- 2025 ACA out-of-pocket maximum (individual)
- $9,200 — the most you can pay in a plan year for covered services (CMS)
- Average Silver plan deductible (2025, no CSR)
- $5,304 — what a typical Silver enrollee pays before coverage kicks in (KFF / ASPE)
- Typical primary care copay
- $20–$40 per visit on most Silver and Gold plans (Healthcare.gov)
- Common coinsurance split
- 80/20 — insurer pays 80%, you pay 20% after the deductible (Healthcare.gov)
- Preventive care
- $0 copay even before the deductible on ACA-compliant plans (Healthcare.gov)
The Deductible: Your Starting Line
The deductible is the dollar amount you pay out of your own pocket before your insurance company starts sharing costs. If your plan has a $2,000 deductible, you cover the first $2,000 of covered medical bills each year — then your plan starts helping.
Think of it like a car insurance deductible after a fender-bender. You absorb the first chunk; after that the insurer steps in. The same logic applies to health plans.
One important exception: ACA-compliant plans must cover certain preventive services — annual physicals, immunizations, screenings — at no cost to you, even before you hit your deductible. You get those for free on day one of your plan year.
The Copay: A Flat Fee Per Visit
A copay (short for copayment) is a fixed dollar amount you pay each time you use a specific service — a doctor visit, an urgent care stop, a prescription pickup. It is not a percentage; it is a set number printed on your insurance card.
For example, your plan might charge a $30 copay for a primary care visit and a $75 copay for a specialist. You pay that amount at the desk, and the insurer pays the rest — as long as you are using an in-network provider.
On many plans, some copays apply even before you meet your deductible. On others, copays only kick in after the deductible is met. Read your Summary of Benefits and Coverage (SBC) to know which applies to yours.
Coinsurance: Splitting the Bill by Percentage
Coinsurance is your share of a medical bill expressed as a percentage. The most common split is 80/20: your insurer pays 80%, you pay 20%. You see coinsurance most often on hospital stays, surgeries, or specialist visits that do not have a flat copay.
Coinsurance only starts after you have met your deductible. Say you have a $1,000 deductible and 20% coinsurance. You pay the first $1,000 in full. After that, a $500 hospital bill costs you $100 (20% of $500) instead of $500.
The higher your coinsurance percentage, the more you pay per service. A Gold plan with 20% coinsurance costs you less per claim than a Bronze plan with 40% coinsurance — but the Gold plan usually has a higher monthly premium.
How the Three Add Up — and Where It Stops
Here is the sequence that repeats every plan year: you pay in full until you hit your deductible, then you share costs through copays and coinsurance, then once you hit your out-of-pocket maximum, the insurer covers 100% for the rest of the year.
For 2025, the ACA caps that maximum at $9,200 for an individual and $18,400 for a family on Marketplace plans, according to CMS. After that ceiling, you pay nothing more for covered in-network services that year — no copays, no coinsurance, nothing.
This is the safety valve that prevents a single bad year from bankrupting you. It is also why reading both the deductible AND the out-of-pocket max matters when you compare plans, not just the monthly premium.
Sources: CMS 2025 Plan Year Out-of-Pocket Maximums; KFF / ASPE Marketplace Deductibles 2025; Healthcare.gov cost-sharing glossary.
Metal Tiers and What They Mean for Cost-Sharing
ACA plans come in four metal tiers — Bronze, Silver, Gold, and Platinum — and each tier signals how costs are split between you and your insurer over the course of the year.
Bronze plans carry the lowest premiums but the highest deductibles and coinsurance. Silver sits in the middle and is the only tier where Cost-Sharing Reductions (CSRs) can lower your deductible and copays if your income qualifies. Gold and Platinum charge higher premiums but lower deductibles, making them smart for anyone who uses health care frequently.
If you qualify for Cost-Sharing Reductions — available to people earning between 100% and 250% of the federal poverty level — a Silver plan's average deductible can fall as low as $80 per year at the lowest income tier, according to KFF. That is a dramatic difference from the $5,304 average for a Silver plan without CSR.
| Metal Tier | Avg. Deductible (est.) | Coinsurance (typical) | Best For |
|---|---|---|---|
| Bronze | ~$7,500 | 40% | Healthy, low utilizers |
| Silver (no CSR) | ~$5,304 | 30% | Middle-income enrollees |
| Silver (with CSR) | As low as $80 | 10–20% | Lower-income enrollees |
| Gold | ~$1,500–$2,000 | 20% | Frequent health care users |
| Platinum | ~$0–$500 | 10% | High utilizers, chronic conditions |
Sources: KFF Deductibles in ACA Marketplace Plans 2025; Healthcare.gov plan categories; CMS ASPE marketplace deductibles brief.
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See If I Qualify →Frequently Asked Questions
Does my copay count toward my deductible?
Usually not. Copays are separate flat fees that typically do not count toward your deductible. However, copays almost always count toward your out-of-pocket maximum. Check your plan's Summary of Benefits to be sure.
What happens after I hit my out-of-pocket maximum?
Once you reach your plan's out-of-pocket maximum — $9,200 for an individual in 2025 — your insurer covers 100% of covered in-network services for the rest of the plan year. You pay nothing more in deductibles, copays, or coinsurance.
Can I have both a deductible and a copay for the same visit?
It depends on your plan design. Some plans charge a copay for a doctor visit regardless of whether you have met your deductible. Others apply the visit cost to your deductible first. Your SBC document spells this out clearly.
Does coinsurance apply to prescriptions?
Sometimes. Many plans use a tiered drug formulary with flat copays for generic drugs and coinsurance for brand-name or specialty drugs. Check your plan's drug coverage section for the exact breakdown.