Breaking
Wealth Devotee
Demo Example
Demo Example
Demo Example
Tag

cost sharing

Browsing
Health Coverage

What Counts Toward Your Out-of-Pocket Maximum

By

What counts toward your out-of-pocket maximum is your cost sharing on covered services. The Washington State Office of the Insurance Commissioner lists the three components: "deductible, copayments, and coinsurance." What does not count, per the same source: "premiums" and "costs for medical services your plan doesn't cover." A fourth category surprises people most, the amount an out-of-network provider bills above the allowed amount, which is money you pay that moves no counter at all.

This is general information about how a health plan's accumulators are structured. It is not medical, insurance or financial advice, and it does not interpret any bill, Explanation of Benefits or claim. Questions about your own plan belong with your plan administrator or your state Department of Insurance. This site's full position is set out in our disclaimer.

Sources checked August 11, 2026. Out-of-pocket limits are set per plan year. Your plan's Summary of Benefits and Coverage is the authority for your own numbers.

The short answer, in a table

Generally counts Generally does not count
Your deductible payments on covered services Monthly premiums
Copays on covered services Anything spent on services your plan does not cover
Coinsurance on covered services Amounts billed above the allowed amount by an out-of-network provider
Cost sharing at in-network providers Charges above a benefit maximum written into the plan

The Washington State Office of the Insurance Commissioner states the counting side as "deductible, copayments, and coinsurance," and the excluded side as "premiums" and "costs for medical services your plan doesn't cover."

One principle explains the whole table. The out-of-pocket maximum limits your share of what the plan recognizes. It does not limit what you spend on health care. Those are different totals, and the gap between them is the subject of this article.

What counts

Cost sharing on covered services, in all three of its forms.

Deductible payments. Everything you pay toward the deductible on a covered service is also accumulating toward the out-of-pocket maximum. The deductible is not a separate spending phase that has to be cleared before the maximum starts counting. Both counters move on the same dollar.

Copays. The Texas Department of Insurance defines a copay as "a fixed amount that you must pay for a covered health care service, usually when you receive the service." On most plans, copays on covered services accumulate.

Coinsurance. The percentage share you pay after the deductible. TDI defines it as "calculated as a percent of the allowed amount for the service."

The word doing quiet work in all three lines is covered. Cost sharing is what you pay on a claim the plan processed. If there is no claim, or the claim was for something outside the benefits, there is nothing for the plan to count. The full sequence these three sit inside is set out in how a health plan actually pays.

What does not count

Premiums, without exception. The Washington State Office of the Insurance Commissioner lists them among the costs that do not count toward out-of-pocket limits. The premium keeps the coverage in force and is not cost sharing at all. A household that reaches its out-of-pocket maximum in March still owes the premium every month for the rest of the year, and if it stops paying, the coverage can end.

Non-covered services. Anything the plan does not cover is outside the arrangement entirely. It does not reduce the deductible, it does not trigger coinsurance, and it does not accumulate toward the maximum.

Care that never went through the plan. A service paid in cash without a claim being filed is, from the plan's point of view, a service that did not happen. Accumulators move on processed claims.

The money that feels like cost sharing and accumulates nothing

This is the category that produces the confused phone call, and it is the one the ranking pages tend to mention in half a sentence, if at all.

The Texas Department of Insurance defines the mechanism precisely: balance billing is "when a doctor or hospital bills you for the difference between their charge and the allowed amount."

Follow the arithmetic. The allowed amount, in TDI's glossary, is "the maximum amount a plan will pay for a covered health care service." Your coinsurance is a percentage of that allowed amount, and that percentage accumulates. The gap between the provider's charge and the allowed amount is not cost sharing. It is a separate bill from the provider, and on many plans it does not touch the out-of-pocket maximum.

So an out-of-network encounter can cost you twice. Your share of the allowed amount is typically larger, because out-of-network cost-sharing percentages are usually higher, and then the gap on top of it may buy you no progress toward the ceiling at all.

TDI's health care coverage guide, last updated March 31, 2026, notes that patients "get surprise medical bills if they get care outside their health plan's network without realizing it," and that this is also known as balance billing. Federal and state protections exist for certain surprise-billing situations, with their own rules and exceptions. That is a separate subject with real detail in it, and this site covers it on its own page rather than compressing it here.

The same logic applies to a charge above a benefit maximum written into the plan, for example a limit on the number of covered visits for a service. Past the limit, the plan is not paying, so what you pay is not a share of anything.

Whether a provider is in network is therefore not only a price question, it is an accumulation question. That distinction is worked through in in-network vs out-of-network and the allowed amount.

It is not one counter

Most explanations describe the out-of-pocket maximum as a single bucket. On many plans it is not.

In-network and out-of-network are commonly tracked separately. A plan that pays anything out of network will often set a separate, higher out-of-network out-of-pocket maximum, with its own accumulator. Reaching the in-network maximum does not fill the out-of-network one.

Medical and pharmacy can be tracked separately. Some plans run a combined accumulator across both; others keep prescription cost sharing on its own track with its own limit.

Individual and family maximums interact. A family plan carries a family out-of-pocket maximum and, in many designs, individual maximums inside it. How one relates to the other is a plan design decision, and it varies enough that no article can state it as a rule. This is exactly the question to take to the plan document rather than to a search engine.

Practical effect. A member who is "close to the maximum" may be close on one counter and nowhere near on another, and the portal figure they are reading may not be the one that applies to the claim they are worried about. Ask the plan which accumulator a specific claim posted to.

The federal ceiling, and why it has a year attached

There is a legal limit on how high a compliant plan's out-of-pocket maximum can be, and it is reset for each plan year.

The Texas Department of Insurance states the principle: "Federal law sets limits on the amount you pay out of pocket in a plan year."

The Washington State Office of the Insurance Commissioner publishes the figures by year. As reported by that office, the limit is $10,600 for individual coverage and $21,200 for family coverage for 2026, and $12,000 for individual coverage and $24,000 for family coverage for 2027.

Two things follow from that pair of numbers.

First, the figure moves, and it can move substantially between consecutive years. Any article that prints one number without a year attached will be wrong at some point and will not announce it.

Second, and more useful: the federal figure is a ceiling on plans, not your plan's number. Many plans set their maximum well below the legal limit. The number that governs you is the one printed in your own plan's documents for your own plan year. The federal limit only tells you how far a compliant plan is permitted to go.

Where a plan sets its maximum relative to that ceiling is one of the real variables in comparing coverage, and it is discussed in low premium, high deductible.

What happens when you reach it

The plan begins paying the full allowed amount for covered essential benefits for the remainder of that plan year.

Covered California's glossary describes it as "the most you pay during a policy period (usually a year) before your health insurance begins to pay 100 percent." The California Department of Insurance states the member-side effect: "After you reach this limit, you may not have to pay any more co-pays or co-insurance for the year."

Three qualifications keep that from being unlimited coverage.

Premiums continue. They were never inside the calculation.

It applies to covered services. Non-covered care is still yours in full.

It resets with the plan year. Reaching the maximum in November buys a short reprieve, not a lasting one.

How to check your own accumulator

Three places, in this order.

The Summary of Benefits and Coverage for what the plan's out-of-pocket maximum is, whether there are separate in-network and out-of-network limits, and how family and individual limits are structured. The Texas Department of Insurance states the entitlement: "If you ask, your plan must give you a Summary of Benefits and Coverages."

The member portal or the Explanation of Benefits for how much has accumulated so far this plan year, and against which counter. The details on which cost-sharing categories accumulate are also normally spelled out on the plan's own documents rather than in the summary.

The plan administrator or member services for the question no document answers cleanly, which is usually why a specific payment did not accumulate. Ask them to say which accumulator the claim posted to and why.

If a plan will not give a straight answer, your state Department of Insurance handles complaints about how a plan is administered, and the National Association of Insurance Commissioners maintains the directory of state departments. Anything about the care itself, including a test result, belongs with your clinician; nothing on this site interprets one. How copays and coinsurance differ before they reach this ceiling is covered in copay vs coinsurance.

Frequently asked questions

Do copays count toward the out-of-pocket maximum?
On most plans, yes, for covered services. The Washington State Office of the Insurance Commissioner lists "deductible, copayments, and coinsurance" as the costs that count toward out-of-pocket limits. Your plan document is the authority for how your plan treats each category.

Do premiums count toward the out-of-pocket maximum?
No. The Washington State Office of the Insurance Commissioner lists premiums among the costs that do not count. Premiums keep the coverage in force and are outside the cost-sharing calculation entirely, which is why they continue after the maximum is reached.

Does out-of-network care count toward my out-of-pocket maximum?
It depends on the plan, and often it counts toward a separate out-of-network maximum rather than the in-network one. The amount an out-of-network provider bills above the allowed amount is a different matter: the Texas Department of Insurance defines that as balance billing, and it is generally not cost sharing at all.

What is the federal out-of-pocket limit?
It is set per plan year. As reported by the Washington State Office of the Insurance Commissioner, the limit is $10,600 for individual coverage and $21,200 for family coverage for 2026, and $12,000 for individual coverage and $24,000 for family coverage for 2027. That is a ceiling on what a plan may charge, not your plan's number, which is printed in your own documents.

Why is my portal total lower than what I have actually spent?
Usually because part of the spending was on services the plan does not cover, was paid to an out-of-network provider above the allowed amount, or posted to a different accumulator than the one you are looking at. Ask the plan which counter each claim posted to.

Sources: Washington State Office of the Insurance Commissioner, "Out-of-pocket costs," which publishes the federal out-of-pocket limits by plan year. Texas Department of Insurance, "Health insurance glossary," last updated November 8, 2024. Texas Department of Insurance, "Health care coverage guide" (cb005), last updated March 31, 2026. California Department of Insurance, "Health Insurance Costs," no date shown. Covered California glossary, no date shown. All accessed and checked August 11, 2026. Out-of-pocket limits are set per plan year and each figure above is stated with its year and the body that published it. No premium figure, plan recommendation or company comparison appears in this article.

Keep Reading
By
Health Coverage

How Health Insurance Deductible and Coinsurance Work

By

A health plan pays in a fixed order. You pay the premium to keep the plan. Then you pay the full allowed amount for covered services until the deductible is met. Then you and the plan split each covered service by percentage, which is coinsurance. Then, once your cost sharing reaches the out-of-pocket maximum, the plan pays the rest of the covered care for that plan year. Every step is calculated on the allowed amount, not on the provider's charge.

This is general information about how a health plan's payment rules are structured. It is not medical, insurance, tax or financial advice, it does not tell anyone which plan to hold, and it does not interpret any bill, Explanation of Benefits or test result. Questions about your own coverage belong with your plan administrator or your state Department of Insurance. This site's full position is set out in our disclaimer.

Sources checked August 11, 2026. Cost-sharing limits change by plan year. Your plan's Summary of Benefits and Coverage is the authority for your own numbers.

The four numbers, and the order they run in

Almost every plan document puts four numbers on the same page and explains none of the relationships between them.

Number What it is When it applies
Premium The Texas Department of Insurance: "The amount you pay for your health insurance every month" Every month, whether or not you use care
Deductible TDI: "The amount you must pay out-of-pocket for covered services before your plan begins to pay its portion" Before the plan starts sharing
Coinsurance TDI: "Your share of the costs of a covered health care service. Coinsurance is calculated as a percent of the allowed amount" After the deductible is met
Out-of-pocket maximum The most you pay in cost sharing in a plan year before the plan covers 100 percent of covered essential benefits Once your cost sharing reaches it

Read down that column and the shape appears: the four numbers are not four separate facts, they are one sequence. The premium buys entry. The deductible is the stretch you fund alone. Coinsurance is the shared stretch. The out-of-pocket maximum is the stop.

The definitions above are from the Texas Department of Insurance health insurance glossary, last updated November 8, 2024.

The number everything is calculated on

Here is the part the explainers skip, and it is the reason people who understand all four definitions still cannot predict a bill.

The sequence does not run on the amount the provider charges. It runs on the allowed amount.

The Texas Department of Insurance defines the allowed amount as "the maximum amount a plan will pay for a covered health care service." Covered California's glossary describes the same figure from the contract side: "the amount a health insurance plan and health care provider have agreed on as reimbursement for a service."

So when a clinic's charge is one number and the Explanation of Benefits shows a smaller number next to it, the smaller number is not a discount the plan gave you as a favor. It is the number the entire payment machine is built on. Your deductible fills up in allowed amounts. Your coinsurance percentage is taken of the allowed amount. TDI states this directly in its coinsurance definition: it is "calculated as a percent of the allowed amount for the service."

One practical consequence, stated plainly. A reader who estimates their share by taking a percentage of the price on the provider's paperwork will get the wrong answer nearly every time, and will usually get a number that is too high. The gap between charge and allowed amount is where in-network contracts do their work, which is covered in in-network vs out-of-network and the allowed amount.

Step one: the premium buys the machine, and nothing else

The premium is the only one of the four numbers that is not cost sharing.

The California Department of Insurance describes it as "a fee to get and keep insurance," and notes that "you may pay the whole premium" or "your employer may pay all or part of the premium." It is charged whether you see a doctor forty times or never.

The important structural point is what the premium does not do. It does not count toward the deductible. It does not count toward the out-of-pocket maximum. The Washington State Office of the Insurance Commissioner lists premiums explicitly among the costs that do not count toward out-of-pocket limits. So the premium is not a running balance on your care, it is the cost of having the arrangement at all, and it sits outside every other number on this page.

That separation is also what makes plan comparison confusing, because the premium is the one number people can see before they buy and the other three only matter once care happens. That trade is worked through in low premium, high deductible: how the trade-off is made.

Step two: the deductible

The deductible is the stretch of covered spending you fund by yourself before the plan begins paying its share.

The Texas Department of Insurance puts it in a sentence in its health care coverage guide, last updated March 31, 2026: the deductible is "the amount you must pay before your plan will pay."

Three details do most of the damage when they are not understood.

It resets. A deductible is a plan-year figure, so a balance built up in one plan year does not carry into the next.

It counts only covered services. Spending on something your plan does not cover does not move the deductible, no matter how much of it there is.

It is not always one deductible. Many plans run separate deductibles for medical and prescription benefits, and separate in-network and out-of-network deductibles. A family plan adds another layer, because family and individual amounts can interact in more than one way. The plan document is the only place that answers this for a specific plan.

Some services also sit outside the deductible entirely by design. Preventive care is the common example, and the California Department of Insurance notes that preventive care carries no cost sharing.

Step three: coinsurance, and where copays sit

Once the deductible is met, the plan starts sharing, and the sharing usually has two different shapes.

Coinsurance is the percentage shape. The Texas Department of Insurance published a worked example on April 17, 2025 that is worth quoting exactly, because it uses the correct base number: "If your plan's allowed amount for a treatment is $100, your coinsurance payment of 20% would be $20. Your plan pays the remaining $80."

Notice what is doing the work there. Not the charge. The allowed amount.

The copay is the fixed shape. TDI defines it as "a fixed amount that you must pay for a covered health care service, usually when you receive the service," and gives examples of a plan charging $15 for a generic prescription drug, $30 for a primary care visit and $50 for a specialist. TDI also states the timing difference: "Coinsurance kicks in after you have met your plan's annual deductible."

The two are not interchangeable and they behave differently under pressure. A copay is a known number before you walk in. Coinsurance is a percentage of a number you will not see until the claim is processed. Which services carry which is a plan design decision, and the difference is worked through in copay vs coinsurance.

Step four: the out-of-pocket maximum, the only stop in the system

Coinsurance by itself has no ceiling. The out-of-pocket maximum is the ceiling.

The Texas Department of Insurance describes it as the most you will pay annually in cost sharing before the plan covers 100 percent of essential health benefits, with premiums remaining your responsibility. The California Department of Insurance describes the effect: "After you reach this limit, you may not have to pay any more co-pays or co-insurance for the year."

There is also a legal ceiling on that ceiling. TDI's coverage guide states that "federal law sets limits on the amount you pay out of pocket in a plan year." The Washington State Office of the Insurance Commissioner publishes the applicable figures by year, reporting a limit of $10,600 for individual coverage and $21,200 for family coverage for 2026, and $12,000 for individual coverage and $24,000 for family coverage for 2027.

Those are ceilings, not your plan's number. A plan may set its own out-of-pocket maximum well below the federal limit, and many do. The figure that governs you is the one printed in your plan's own documents for your own plan year, and the federal number only tells you how high a compliant plan is permitted to go. Which of your costs actually accumulate toward it is a longer question, answered in what counts toward your out-of-pocket maximum.

What never enters the machine

This is the second thing the explainers leave out, and it accounts for a large share of the bills people cannot reconcile.

Spending on a service the plan does not cover does not enter the sequence at any point. It does not reduce the deductible, it does not trigger coinsurance, and it does not accumulate toward the out-of-pocket maximum. The Washington State Office of the Insurance Commissioner lists "costs for medical services your plan doesn't cover" among the amounts that do not count toward out-of-pocket limits, alongside premiums.

The same is true of the portion of an out-of-network provider's charge that sits above the allowed amount. The Texas Department of Insurance defines that situation as balance billing: "When a doctor or hospital bills you for the difference between their charge and the allowed amount." Money paid in that gap is money spent, and on many plans it is money that moves no counter at all.

So there are two categories of health spending, not one. There is spending the plan recognizes, which runs through the deductible, coinsurance and out-of-pocket maximum in order. And there is spending the plan does not recognize, which runs through nothing. Telling them apart before the care happens is the single most useful habit in this whole subject, and it is mostly a network question.

Federal protections do exist against certain surprise out-of-network bills, and TDI's guide refers to them. Those protections have their own rules and exceptions, and this site covers them separately rather than summarizing them here.

Where your own four numbers are written

Every number on this page exists in a specific document for your specific plan.

The Summary of Benefits and Coverage is the standardized one. Covered California describes it as "an easy-to-read summary that lets you make apples-to-apples comparisons of costs and coverage between health plans." The Texas Department of Insurance states the entitlement plainly: "If you ask, your plan must give you a Summary of Benefits and Coverages."

That document is where the deductible, the coinsurance percentages, the copay amounts and the out-of-pocket maximum are printed together, along with worked coverage examples. It is standardized across plans specifically so the comparison is possible.

Where to take a question this article cannot answer. Your plan administrator or your employer's benefits contact for what your plan document says. Your insurer's member services for how a specific claim was processed. Your state Department of Insurance for a complaint about the plan's conduct; the National Association of Insurance Commissioners maintains the directory of state departments. A licensed insurance agent for what a plan form contains. A test result or a diagnosis is a question for your clinician, and nothing on this site interprets one.

Deep dives in this series

Frequently asked questions

In what order do the deductible, coinsurance and out-of-pocket maximum apply?
In that order. You pay covered costs yourself until the deductible is met, then you and the plan share each covered service by percentage as coinsurance, then once your cost sharing reaches the out-of-pocket maximum the plan pays 100 percent of covered essential benefits for the rest of the plan year. Premiums continue throughout and are outside the sequence.

Is coinsurance a percentage of the bill?
No. The Texas Department of Insurance defines coinsurance as "calculated as a percent of the allowed amount for the service," and defines the allowed amount as "the maximum amount a plan will pay for a covered health care service." That is usually smaller than the provider's charge, which is why estimates based on the charge come out too high.

Do copays count before the deductible is met?
It depends on the plan. Some plans apply copays to certain services from day one and run the deductible only on other categories; others apply the deductible first. The Texas Department of Insurance states the general rule that coinsurance begins after the deductible, and copay treatment is a plan design choice. Your Summary of Benefits and Coverage is the authority for your plan.

Does my premium count toward my deductible or out-of-pocket maximum?
No. The Washington State Office of the Insurance Commissioner lists premiums among the costs that do not count toward out-of-pocket limits. The premium keeps the coverage in force and sits outside the cost-sharing sequence entirely.

Where do I find my own deductible and out-of-pocket maximum?
In your plan's Summary of Benefits and Coverage. The Texas Department of Insurance states that "if you ask, your plan must give you a Summary of Benefits and Coverages." Your insurer's member portal will normally also show how much of each has accumulated so far this plan year.

Sources: Texas Department of Insurance, "Health insurance glossary," last updated November 8, 2024. Texas Department of Insurance, "Health care coverage guide" (cb005), last updated March 31, 2026. Texas Department of Insurance, "Do you know the difference between a copay and coinsurance?", April 17, 2025. Washington State Office of the Insurance Commissioner, "Out-of-pocket costs," which publishes the federal out-of-pocket limits by year. California Department of Insurance, "Health Insurance Costs," no date shown on the page. Covered California glossary, no date shown on the page. All accessed and checked August 11, 2026. Cost-sharing limits are set per plan year; each figure above is stated with the year and the body that published it. No premium figure, plan recommendation or company comparison appears in this article.

Keep Reading
By
Health Coverage

Copay vs Coinsurance: When Each One Applies

By

A copay is a fixed dollar amount you pay for a covered service, set in advance and the same every time. Coinsurance is a percentage of the allowed amount for that service, so it changes with the service. The Texas Department of Insurance states the timing rule: "Coinsurance kicks in after you have met your plan's annual deductible." Copays are often charged from the start of the plan year. Which one applies to a given service is written in your plan documents, service by service.

This is general information about how health plan cost sharing is written. It is not medical, insurance or financial advice, it does not recommend a plan or a plan structure, and it does not interpret any bill or Explanation of Benefits. Questions about your own coverage belong with your plan administrator or your state Department of Insurance. This site's full position is set out in our disclaimer.

Sources checked August 11, 2026. Cost-sharing design varies by plan and plan year. Your Summary of Benefits and Coverage is the authority for your own plan.

The one-sentence difference, and the better question

Fixed amount versus percentage. That is the difference every comparison leads with, and it is correct as far as it goes.

The better question is this: when the price of a service is unknown in advance, which of you is exposed to it? Answer that and the two words stop being vocabulary and start being structure. A copay is a number the plan committed to before anyone knew what the care would cost. A coinsurance percentage is a share of a number that will not exist until the claim is processed.

Everything below is that one idea, worked out.

What a copay is

The Texas Department of Insurance defines it in its health insurance glossary, last updated November 8, 2024, as "a fixed amount that you must pay for a covered health care service, usually when you receive the service."

Two features matter. It is fixed, and it is usually collected at the point of care rather than billed later.

TDI illustrates the pattern with a plan that charges "$15 for generic prescription drugs, $30 to visit a primary care doctor, or $50 to see a specialist." Those are the department's illustration of how copays are tiered by service type. They are not typical amounts, and no amount in this article should be read as what any plan charges.

The California Department of Insurance describes the same instrument as "a flat amount you pay for each visit to a doctor or for each prescription."

The structural feature of a copay is that it is the same regardless of what the service turns out to cost. A primary care visit that produces a five-minute conversation and one that produces a long workup carry the same copay for the visit, if the plan is written that way. The variance lands on the plan.

What coinsurance is, and the number it is taken of

The Texas Department of Insurance defines coinsurance as "your share of the costs of a covered health care service," and then adds the clause that most explanations drop: coinsurance "is calculated as a percent of the allowed amount for the service."

Not a percent of the bill. A percent of the allowed amount.

The same department publishes a worked example, dated April 17, 2025: "If your plan's allowed amount for a treatment is $100, your coinsurance payment of 20% would be $20. Your plan pays the remaining $80."

The allowed amount is a defined term with its own meaning. TDI's glossary calls it "the maximum amount a plan will pay for a covered health care service." Covered California's glossary describes it from the contract side as "the amount a health insurance plan and health care provider have agreed on as reimbursement for a service." For in-network care it is a negotiated rate, and it is usually lower, sometimes much lower, than the provider's list charge.

This is where most self-made estimates go wrong. Taking twenty percent of the number printed on a clinic's paperwork produces a figure that is too high, because the clinic's number is the charge and the plan's arithmetic runs on the allowed amount. That relationship is worked through in in-network vs out-of-network and the allowed amount.

Who carries the risk when the price is unknown

Here is the difference the comparison articles do not name.

A copay transfers price variance to the plan. Coinsurance leaves it with you.

Under a copay, your exposure for that service is decided before the service happens. Whatever the allowed amount turns out to be, your share is the printed number. The plan absorbs the difference between an inexpensive instance and an expensive one.

Under coinsurance, your share scales with the allowed amount. Twenty percent of a small allowed amount is small. Twenty percent of a large one is large. There is no per-service cap inside the coinsurance mechanism itself.

The only thing that bounds coinsurance is the out-of-pocket maximum, which is a plan-year ceiling rather than a per-service one. So a single high-cost episode under coinsurance can move a household from paying almost nothing to paying its entire annual maximum, and the mechanism contains nothing to slow that down in between. What accumulates toward that ceiling, and what does not, is covered in what counts toward your out-of-pocket maximum.

This is why the two are not simply different notations for the same idea. They allocate uncertainty differently, and uncertainty is most of what makes medical costs hard to plan around.

Where each one sits relative to the deductible

The Texas Department of Insurance gives the rule for coinsurance in one sentence: "Coinsurance kicks in after you have met your plan's annual deductible, which is what you pay out of pocket before your plan starts picking up a share of medical expenses."

Copays are the less tidy case, and the honest answer is that it depends on the plan.

Some plans charge copays for named services from the first day of the plan year, with the deductible running separately on other categories. Other plans apply the deductible first and only then begin charging copays. Some plans use both structures for different service categories inside the same document: copays for office visits and prescriptions, coinsurance for imaging, surgery and hospital stays.

That variation is the reason two people who both say they "have a $30 copay" can pay differently for the same appointment. It is not a contradiction. It is two plan designs.

There is one more wrinkle worth knowing before reading a plan summary. Whether a copay counts toward the deductible is also a plan choice, and it is separate from whether the copay is charged before the deductible is met. Both answers live in the same document and neither can be assumed.

Side by side

Copay Coinsurance
Form Fixed dollar amount Percentage
Calculated on Nothing; it is set in advance The allowed amount for the service (TDI)
Known before care Yes No, not until the allowed amount is set
Typically charged Often at the time of service After the claim is processed
Relative to the deductible Plan design choice; can be before or after After the deductible is met (TDI)
Who carries price variance The plan You
Per-service ceiling The copay itself None; only the annual out-of-pocket maximum
Counts toward the out-of-pocket maximum Generally yes for covered services Generally yes for covered services

Both are cost sharing, and both are usually accumulating toward the same annual ceiling. They differ in shape, in timing and in who is exposed.

Which one applies to you, and where that is written

Not in an article. In two documents and one screen.

The Summary of Benefits and Coverage. This is the standardized document that lists cost sharing by service category, so office visits, specialist visits, emergency care, imaging, prescriptions and hospital stays each show whether they carry a copay, coinsurance, or both, and whether the deductible applies first. Covered California describes it as "an easy-to-read summary that lets you make apples-to-apples comparisons of costs and coverage between health plans." The Texas Department of Insurance states the entitlement: "If you ask, your plan must give you a Summary of Benefits and Coverages."

The full plan document or evidence of coverage. Longer, less readable, and authoritative where the summary is ambiguous.

The member portal. Where the plan shows what it actually applied to a specific claim, and how much of the deductible and out-of-pocket maximum has accumulated so far this plan year.

Plan type also correlates loosely with cost-sharing style, though it does not determine it. The California Department of Insurance notes that plans built on tighter networks are "less likely to have a yearly deductible" and that members "usually pay a co-pay or flat fee for most services," while broader-network plans are more likely to carry a deductible and higher out-of-pocket exposure. Those are tendencies rather than rules, and the letters on a plan are examined in HMO, PPO and EPO.

Where to take a question this article cannot answer. Your plan administrator or benefits contact for what your plan document says. Your insurer's member services for how a specific claim was processed and why. Your state Department of Insurance if a plan will not answer; the National Association of Insurance Commissioners maintains the directory of state departments. A licensed agent for what a specific plan form contains. Anything about the care itself belongs with your clinician, and nothing here interprets a diagnosis or a result.

How the deductible, coinsurance and out-of-pocket maximum fit together as one sequence is set out in how a health plan actually pays.

Frequently asked questions

What is the difference between a copay and coinsurance?
A copay is a fixed dollar amount for a covered service. Coinsurance is a percentage of the allowed amount for that service, which the Texas Department of Insurance defines as "the maximum amount a plan will pay for a covered health care service." The copay is known before the care; the coinsurance amount is not known until the claim is processed.

Do I pay a copay and coinsurance for the same service?
Usually one or the other applies to a given service, but plans can combine cost sharing across an episode of care, so a visit may carry a copay while imaging ordered at that visit carries coinsurance. The Summary of Benefits and Coverage lists which applies by service category.

Does coinsurance start before the deductible is met?
No. The Texas Department of Insurance states that "coinsurance kicks in after you have met your plan's annual deductible." Before that point, covered costs are generally yours in full, apart from any services the plan pays for outside the deductible.

Is coinsurance calculated on the doctor's bill?
No. The Texas Department of Insurance defines coinsurance as "calculated as a percent of the allowed amount for the service," and gives the example of a $100 allowed amount where 20 percent coinsurance is $20 and the plan pays $80. The provider's charge is often higher than the allowed amount, so estimates based on the charge come out too high.

Sources: Texas Department of Insurance, "Do you know the difference between a copay and coinsurance?", April 17, 2025. Texas Department of Insurance, "Health insurance glossary," last updated November 8, 2024. Texas Department of Insurance, "Health care coverage guide" (cb005), last updated March 31, 2026. California Department of Insurance, "Health Insurance Costs" and "Compare PPOs, EPOs, and HMOs," no dates shown on those pages. Covered California glossary, no date shown. All accessed and checked August 11, 2026. Dollar amounts quoted are the publishing department's own illustrations and are not presented as typical or current plan amounts. No premium figure, plan recommendation or company comparison appears in this article.

Keep Reading
By