A deductible is the amount you pay for covered care before your plan starts sharing costs. A copay is a flat fee for a specific service, such as $30 for a doctor visit. Coinsurance is a percentage of the bill you pay after the deductible is met, such as 20 percent. Getting deductible vs copay vs coinsurance straight is the key to predicting what a medical bill will actually cost you, and the worked example below shows all three at work in one year.
Key Takeaways
- The deductible is a threshold you pay in full (for most services) before coinsurance begins.
- A copay is a fixed dollar amount, and on many plans it applies even before the deductible is met.
- Coinsurance is a percentage split, so the larger the bill, the more you pay, until you hit the out-of-pocket maximum.
- The out-of-pocket maximum is the ceiling for covered, in-network care. For 2026 Marketplace plans, the federal limit is $10,600 for an individual and $21,200 for a family, and many plans set lower limits.
- Premiums do not count toward any of these. They are the price of having the plan.
The Three Terms in Plain Language
Deductible: the entry fee before sharing starts
Say your plan has a $1,500 deductible. For services that are subject to it, you pay the full allowed price until you have paid $1,500 in total. The word “allowed” matters. It means the discounted rate your insurer negotiated with an in-network provider, not the “sticker price” on the hospital’s chargemaster. After the deductible is met, the plan begins paying its share.
Some services skip the deductible. Preventive care is covered with no cost sharing, and many plans set flat copays for primary care visits, generic drugs or urgent care, regardless of the deductible. Read your summary of benefits and coverage to see which services are “deductible applies” and which are not.
Copay: the flat price tag
A copay (or copayment) is a set amount per visit or prescription, like $30 for primary care or $60 for a specialist. It is easy to budget because you know the number before you go. Copays typically count toward your out-of-pocket maximum, but on some plans they do not count toward the deductible, which is a detail worth confirming.
Coinsurance: the percentage split
Coinsurance is expressed as the share you pay after the deductible. With “80/20” coinsurance, the plan pays 80 percent of the allowed amount and you pay 20 percent. A $10,000 allowed charge means $2,000 from you, until you reach your out-of-pocket maximum.
Out-of-pocket maximum: the safety ceiling
Once your deductible, copays and coinsurance for covered in-network services add up to the out-of-pocket maximum, the plan pays 100 percent of the rest of the covered, in-network care for that plan year. It does not include your premiums, charges for services the plan does not cover, or most out-of-network costs. You can see the current federal limits on Healthcare.gov.
Deductible vs Copay vs Coinsurance: Side-by-Side Comparison
| Feature | Deductible | Copay | Coinsurance |
|---|---|---|---|
| What it is | Amount you pay before the plan shares costs | Fixed fee per service | Percentage of the allowed amount |
| When it applies | Early in the plan year | At the time of service, often before the deductible | After the deductible is met |
| Predictability | Medium | High | Low, depends on the bill size |
| Counts toward out-of-pocket maximum | Yes | Usually yes | Yes |
| Typical example | $1,500 a year | $30 primary care | 20 percent of surgery |
A Worked Example: Jordan’s Knee Surgery
All numbers below are illustrative, chosen to make the math easy to follow. They are not typical prices. Jordan has this plan for the year:
- Premium: $400 per month
- Deductible: $1,500
- Primary care copay: $30. Specialist copay: $60. Neither is subject to the deductible.
- Coinsurance: 20 percent after the deductible
- Out-of-pocket maximum: $5,000
Over several months, Jordan has the following care, all in-network.
| Step | Allowed amount | What Jordan pays | Running out-of-pocket total |
|---|---|---|---|
| 1. Primary care visit for knee pain | Copay service | $30 copay | $30 |
| 2. Orthopedic specialist visit | Copay service | $60 copay | $90 |
| 3. MRI scan | $1,200 | $1,200 (deductible applies); $300 of deductible remains | $1,290 |
| 4. Surgery, including surgeon, facility and anesthesia | $16,300 | $300 to finish the deductible, plus 20 percent of $16,000 = $3,200, for $3,500 | $4,790 |
| 5. Eight physical therapy visits at $150 each | $1,200 | 20 percent would be $240, but only $210 is left before the maximum | $5,000 |
Walk through step 3 slowly. The MRI is subject to the deductible, so Jordan pays the entire $1,200 allowed amount. The deductible was $1,500, so $300 is left. In step 4, the first $300 of the surgery bill finishes the deductible. The remaining $16,000 is split 80/20, so the plan pays $12,800 and Jordan pays $3,200.
In step 5, Jordan has paid $4,790 toward the $5,000 maximum. The therapy coinsurance would be $240, but only $210 fits under the cap, so Jordan pays $210 and the plan pays the other $990. Any further covered, in-network care for the rest of the year costs Jordan $0.
Add it up. Jordan pays $5,000 in cost sharing plus $4,800 in premiums ($400 times 12), so the total cost of coverage for the year is $9,800. The plan paid roughly $13,790 on the MRI-surgery-therapy portion ($0 for the MRI, $12,800 for surgery, and $990 for therapy), plus its share of the visits. Without insurance, Jordan could have faced the full negotiated amounts and potentially much higher undiscounted bills.
What Changes If the Plan Is Different
The same surgery on a different plan can produce a very different result. A plan with a $6,000 deductible and 0 percent coinsurance after it would charge Jordan $6,000 for the year but offer a lower premium. A plan with a $500 deductible and 30 percent coinsurance might cost less for small bills and more for large ones, until the out-of-pocket maximum caps it. For people with high-deductible health plans, pros and cons of high-deductible plans are worth reading, and savings accounts are explained in HSA vs FSA: which health account saves more.
Common Confusions
Family deductibles: embedded versus aggregate
On a family plan, an embedded deductible means each person has an individual deductible, and the plan begins sharing for that person once it is met, even if the family total is not. An aggregate deductible means the whole family deductible must be met before sharing begins for anyone, except where a federal individual limit applies. Ask which type you have.
“Allowed amount” versus the bill
The hospital’s listed price is not what the plan uses. Your explanation of benefits shows the billed charge, the allowed amount and what you owe. Coinsurance is calculated on the allowed amount, which is another reason to stay in-network.
Network matters for everything
Out-of-network care may have a separate, higher deductible and out-of-pocket maximum, and the provider may bill you for the difference between its price and the allowed amount. Emergency care and certain situations are protected by the No Surprises Act. Learn more in surprise medical bills: your rights and how to fight them.
Prescription drugs often have their own rules
Many plans use tiers with copays for generics and coinsurance for specialty drugs, and some apply a separate drug deductible. If you take regular medications, how to lower prescription drug costs offers practical ways to reduce what you pay.
Premiums are separate
It is easy to forget that the monthly premium is not part of the deductible or the out-of-pocket maximum. A low-premium plan can still be expensive if you need frequent care.
How to Estimate Your Own Costs
- Pull up your summary of benefits and coverage. Write down the deductible, coinsurance, copays and out-of-pocket maximum.
- List your expected care for the year, such as regular visits, prescriptions and any planned procedure.
- For each service, check whether the deductible applies or a flat copay applies.
- Calculate a normal-year cost and a bad-year cost. The bad-year cost is often your out-of-pocket maximum.
- Add the annual premium to both numbers and compare plans using the total, not just the premium.
A Quiet Year for Comparison: Priya’s Numbers
Jordan’s year shows how the out-of-pocket maximum works in a heavy year. A light year looks very different, and it is the one most people actually have. Priya is on the same plan. Her illustrative year includes two primary care visits ($30 each, so $60), twelve months of a generic prescription at a $10 copay ($120), one urgent care visit with a $75 copay, and a lab panel with an allowed amount of $180 that is subject to the deductible.
Her cost sharing comes to $60 + $120 + $75 + $180 = $435. She is nowhere near the $1,500 deductible, let alone the $5,000 maximum. Her premiums are still $4,800, so premiums are by far her largest cost. This is why picking a plan only by its deductible can mislead you. A person who rarely uses care may do better with a lower premium, while someone expecting a procedure may come out ahead with a lower deductible.
Reading Your Explanation of Benefits
After each claim, your insurer sends an explanation of benefits. It is not a bill, but it tells you what to expect from the provider. Look for these lines:
- Amount billed: the provider’s list price.
- Plan discount or network savings: the difference between the list price and the negotiated rate.
- Allowed amount: the negotiated rate, which is the number your deductible and coinsurance use.
- Applied to deductible: how much of your cost went toward the deductible.
- Coinsurance or copay: your share after the deductible.
- Patient responsibility: the total you owe the provider.
Compare the explanation of benefits with the provider’s bill before you pay. Mistakes happen, such as a charge billed under the wrong code or a deductible applied twice, and they are far easier to fix early.
Practical Ways to Keep Your Share Lower
- Use in-network providers, and check network status for the surgeon, the facility and the anesthesiologist separately when you have a scheduled procedure.
- Ask for the billing codes and an estimate before a planned service, then ask your insurer what it will allow.
- If you expect to hit your out-of-pocket maximum anyway, consider scheduling related care in the same plan year.
- Use preventive care benefits, since they do not touch your deductible.
- If you have an HSA-eligible plan, use pre-tax dollars to pay your share.
Frequently Asked Questions
Do I pay a copay and the deductible for the same visit?
Usually one or the other, depending on the service and plan. Some plans charge a copay and then apply the remaining allowed amount to the deductible. Your summary of benefits will say.
Does the deductible reset every year?
Yes, on most plans it resets at the start of each plan year, which may be January 1 or another date set by an employer.
Is a lower deductible always better?
Not always. Plans with lower deductibles often have higher premiums, so the total annual cost depends on how much care you use.
What counts toward the out-of-pocket maximum?
Deductibles, copays and coinsurance for covered in-network services generally count. Premiums, non-covered services and balance-billed amounts typically do not.
Can I pay my deductible in installments?
The insurer does not bill the deductible directly. You pay providers as claims are processed, and many providers offer payment plans. Ask the billing office.
Is coinsurance the same as a copay?
No. A copay is a fixed dollar amount, while coinsurance is a percentage of the allowed charge.
What if I change plans mid-year?
Amounts paid toward a deductible or out-of-pocket maximum generally do not transfer to a new plan, which can matter if you are close to your limit.
Bottom Line
When you compare deductible vs copay vs coinsurance, remember the order of operations: copays are paid at the visit, the deductible is paid first for most big services, coinsurance follows, and the out-of-pocket maximum stops the clock. Run through a worked example like Jordan’s with your own plan numbers before you need care, and you will know what a surprise bill could cost before it arrives.
This article is for general informational purposes only and does not constitute medical, legal, or financial advice. Coverage rules, costs and guidelines change and vary by plan and state — consult a licensed healthcare professional or your insurer for guidance specific to your situation.
