Almost every plan document lists a deductible and an out-of-pocket maximum on the same line, which makes them look like two versions of the same idea. They are opposite ends of the same track. One is where the plan starts helping. The other is where you stop paying.
All the dollar figures below were pulled fresh on September 5, 2026 from the regulation and the federal guidance that set them. The statutory caps change every year, so the plan year attached to a number matters as much as the number.
What an Out-of-Pocket Maximum Actually Is
HealthCare.gov defines it as “the most you have to pay for covered services in a plan year. After you spend this amount on deductibles, copayments, and coinsurance for in-network care and services, your health plan pays 100% of the costs of covered benefits.”
That last clause is the whole point. Once you cross the line, covered in-network care is free for the rest of the plan year. No copay at the pharmacy, no coinsurance on the surgery, nothing. The CMS uniform glossary puts it the same way: after you meet this limit the plan will usually pay 100% of the allowed amount.
It is the only real financial floor in a health plan. The deductible tells you how bad a normal year gets. The out-of-pocket maximum tells you how bad the worst year gets.
Deductible vs Out-of-Pocket Maximum
| Deductible | Out-of-pocket maximum | |
|---|---|---|
| What it does | Amount you pay before the plan starts paying | Ceiling on your total cost sharing for the year |
| Position | Starting line | Finish line |
| Typical 2025 employer-plan figure (single) | $1,886 average | 12% of workers at $2,000 or less, 21% above $6,000 |
| Federal cap | None on most plans, but HSA-qualified plans have a floor | $10,600 self-only in 2026, $12,000 in 2027 |
| Includes copays? | Often no, depends on plan design | Yes, for in-network covered care |
| Includes coinsurance? | Coinsurance begins after it is met | Yes, for in-network covered care |
| Includes premiums? | No | No |
| Relationship | Counts toward the out-of-pocket maximum | Always the larger of the two |
Deductible averages are from the KFF 2025 Employer Health Benefits Survey, the most recent edition as of September 2026. The federal cap comes from 45 CFR 156.130 and the CMS payment parameters guidance. The full mechanics of the first number live on the health insurance deductible page.
The Federal Caps for 2026 and 2027
The ACA sets a hard ceiling. Under 45 CFR 156.130(a)(2), cost sharing for a plan year after 2014 may not exceed the 2014 self-only dollar limit of $6,350 increased by the premium adjustment percentage, with the family limit set at exactly twice the self-only limit and both rounded down to the next lowest multiple of $50.
CMS published the 2027 parameters on January 29, 2026. The premium adjustment percentage for 2027 is 1.8916224814, about 89.2% premium growth since 2013, which produces a 2027 maximum annual limitation on cost sharing of $12,000 self-only and $24,000 for other than self-only. CMS notes that is roughly a 13.2% increase over the 2026 parameters of $10,600 and $21,200.
HSA-qualified high deductible health plans live under a separate and lower ceiling set by the IRS, not by CMS. This trips people up constantly, so here are both sets side by side.
| Plan year | ACA cap, self-only | ACA cap, family | HSA-qualified HDHP cap, self-only | HSA-qualified HDHP cap, family |
|---|---|---|---|---|
| 2026 | $10,600 | $21,200 | $8,500 | $17,000 |
| 2027 | $12,000 | $24,000 | $8,700 | $17,400 |
The HDHP figures come from IRS Revenue Procedure 2025-19 for 2026 and Revenue Procedure 2026-24 for 2027, which define a high deductible health plan partly by requiring that annual out-of-pocket expenses (deductibles, copayments, and other amounts, but not premiums) stay under those numbers.
Note the gap widens. In 2027 an HSA-qualified plan cannot expose you to more than $8,700, while an ordinary marketplace or employer plan can go to $12,000. If you are choosing between plan types, that ceiling difference is worth as much as a premium difference. See HDHP vs PPO, and if you want the account that pairs with the HDHP, HSA vs FSA.
What Counts Toward the Out-of-Pocket Maximum
Three things count, per HealthCare.gov: deductibles, copayments, and coinsurance, for in-network covered care. That includes the copay you handed over at the front desk in January and the coinsurance on a scan in June. The mechanics of both are on the copay vs coinsurance page. Note that a copay can count toward the out-of-pocket maximum while sitting outside the deductible entirely, which is the confusing case covered on does a copay count toward the deductible.
One regulatory detail is worth knowing if you use manufacturer coupons. Under 45 CFR 156.130(h), amounts paid with direct support from drug manufacturers “may be, but are not required to be, counted toward the annual limitation on cost sharing.” Plans that decline to count coupon dollars run what the industry calls a copay accumulator, and the practical result is that a coupon covering your specialty drug can keep you from ever reaching your ceiling.
What Never Counts
HealthCare.gov and the CMS uniform glossary agree on the exclusions. The limit never includes:
- Monthly premiums. They buy the coverage and sit entirely outside the cap.
- Balance-billed charges. If a non-contracted provider charges $200 and the allowed amount is $110, that $90 gap is not cost sharing. Some of those bills are now blocked outright, which is the subject of the No Surprises Act.
- Services the plan does not cover. Anything excluded from the benefit package is invisible to the cap no matter how much it costs.
- Charges above the allowed amount.
- Out-of-network care on most plans. 45 CFR 156.130(c) says a network plan is “not required to count” cost sharing for out-of-network benefits toward the annual limitation, and most plans exercise that option or apply a separate, much higher out-of-network maximum.
The CMS glossary adds a blunt warning: “Some plans don’t count all of your copayments, deductibles, coinsurance payments, out-of-network payments, or other expenses toward this limit.” Read the actual Summary of Benefits and Coverage rather than assuming.
Self-Only vs Family Maximums
The regulation sets the family limit at twice the self-only limit. What matters in practice is whether an individual inside a family plan has their own embedded cap.
CMS guidance is explicit on this. A May 2015 CCIIO FAQ states that in the final 2016 Notice of Benefit and Payment Parameters, “HHS clarified that the self-only annual limitation on cost sharing applies to each individual, regardless of whether the individual is enrolled in a self-only or other than self-only plan.” So no single person on a family policy can be charged more than the self-only limit ($10,600 in 2026) even though the family’s collective ceiling is $21,200.
That FAQ also settles the family-HDHP version of the question: an issuer can offer a family plan with a deductible larger than the self-only cost-sharing limit, as long as the self-only maximum still applies to each individual before the family deductible is satisfied. Family deductibles themselves do not always behave that way, which is the subject of embedded vs aggregate deductible.
What Happens After You Hit It
The plan pays 100% of covered in-network services for the remainder of the plan year. You still owe nothing more on the deductible, no copays, no coinsurance. You keep paying premiums, and you keep owing for anything the plan does not cover.
The counter resets on the first day of the new plan year, not on January 1 if your plan year runs differently. A hospitalization that straddles a plan-year boundary can put you through two full out-of-pocket maximums in eight weeks, which is a real and underappreciated risk of a December procedure.
What Real Plans Actually Set
The statutory cap is a ceiling, not a typical value. KFF found that more than 99% of covered workers in 2025 were in a plan with an out-of-pocket maximum for single coverage, but the amounts vary enormously: 12% were in a plan capped at $2,000 or less, while 21% were above $6,000. Among high deductible plans, the average single-coverage maximum was $4,926 for HDHP/HRA plans and $4,509 for HSA-qualified plans.
Most people never come close. The Peterson-KFF Health System Tracker reports that people with employer coverage spent an average of $869 out of pocket on cost sharing in 2023, split into $453 of deductible, $193 of copayments, and $223 of coinsurance. The out-of-pocket maximum is insurance against the tail, and in most years it does nothing at all.
The Cash Payer’s Trade-Off
Here is the part nobody puts in a plan brochure. If you never file a claim, you never touch the out-of-pocket maximum.
Money you hand a provider at a self-pay rate generally does not count toward the deductible or the ceiling, because no claim is submitted and the plan never sees it. Some providers will submit a claim for a self-pay visit on request, and some plans will process a member-submitted claim at the allowed amount, but the default is that cash spending is invisible to your plan.
That produces a clean decision rule with two cases:
If you are uninsured, the out-of-pocket maximum is irrelevant to you and there is no ceiling on your exposure at all. That is the honest argument for carrying catastrophic coverage even when you intend to pay cash for routine care. It is also why negotiating a hospital bill matters so much more when you are self-pay: nothing else caps the number. An unplanned emergency room visit without insurance is the scenario that ruins the math.
If you are insured and considering a cash price, the question is whether you expect to hit the maximum this year. If you are early in a healthy year with a $6,000 ceiling, paying $265 cash for an MRI instead of $1,500 toward a deductible is straightforwardly better. If you already know you are having surgery in October, every dollar you pay outside the plan is a dollar that does not shorten your path to the ceiling, and the cash discount is worth less than it looks.
The Bottom Line
The deductible and the out-of-pocket maximum are the same track measured from opposite ends. For 2026 the legal ceiling is $10,600 for one person and $21,200 for a family, and for 2027 it rises to $12,000 and $24,000; HSA-qualified plans are capped lower, at $8,700 and $17,400 in 2027. Everything you pay in-network for covered care counts toward the ceiling, and almost nothing else does. If you pay cash, you are trading a lower price today for a ceiling you are not moving toward, which is a good trade in a healthy year and a bad one in an expensive year.