Your out-of-pocket maximum is the ceiling on what you'll pay for covered health care in a plan year. Once you hit it, your insurance pays 100% of covered costs for the rest of the year. But what counts toward it — and what doesn't — is more complicated than most people realize.
The out-of-pocket maximum (OOPM) is the most you'll pay for covered health services in a plan year — the annual reset period, typically January 1 through December 31. Once your accumulated out-of-pocket spending reaches this limit, your health insurer pays 100% of the cost of covered in-network services for the remainder of the year.
Federal law under the ACA sets maximum OOPM limits for most health plans — these limits are adjusted annually. For 2024, the federal maximum out-of-pocket limit is $9,450 for individual coverage and $18,900 for family coverage. Plans can set lower limits; they cannot exceed the federal maximum for ACA-compliant plans.
The out-of-pocket maximum is the sum of everything you pay toward covered in-network care in a plan year: your deductible payments, copays, and coinsurance. It functions as a financial safety net — a cap that prevents catastrophic medical expenses from entirely derailing your finances in a bad health year. Source: HealthCare.gov.
The following payments generally count toward your out-of-pocket maximum on ACA-compliant plans:
Once the cumulative total of these payments reaches your plan's OOPM, the plan pays 100% of covered in-network services for the rest of the plan year.
This is where many people are surprised — not all health-related spending applies to your out-of-pocket maximum:
The out-of-pocket maximum resets at the start of each plan year — January 1 for most employer plans, or your plan anniversary date if you enrolled mid-year. If you hit your OOPM in December, the clock resets in January. Any elective procedures, surgeries, or expensive treatments you can schedule before year-end — while your OOPM is met — cost you nothing beyond what you've already paid. Planning elective care timing around your OOPM is one of the most practical ways to maximize your health benefit. Source: HealthCare.gov.
Most plans have separate in-network and out-of-network out-of-pocket maximums. The in-network OOPM is lower; the out-of-network OOPM — if one exists — is higher and applies separately to out-of-network spending. On HMO plans, out-of-network care is typically not covered at all (except emergencies), so the in-network OOPM is the only one that applies.
On PPO plans with both in-network and out-of-network coverage, watch carefully: spending significant amounts out-of-network counts toward the out-of-network OOPM — a higher limit — rather than the in-network OOPM. This means out-of-network care can expose you to significantly higher total costs even when both maximums are technically finite.
Family plans add another layer of complexity with two distinct structures:
Embedded (individual) deductible and OOPM: Each family member has their own individual deductible and OOPM. Once a single family member hits their individual OOPM, the plan pays 100% for that person's covered costs — regardless of what others in the family have spent. There's also a family OOPM that caps total family spending.
Aggregate deductible and OOPM: The family deductible and OOPM must be met collectively before full benefits kick in for any family member. No individual family member triggers the protection alone — the whole family's spending is pooled until the aggregate limit is reached.
If your family plan has an embedded individual OOPM — for example, $4,500 individual and $9,000 family — a family member who undergoes an expensive procedure hits their individual OOPM at $4,500 and pays nothing further for the rest of the year, even if the family hasn't reached $9,000 total. This embedded protection is important when one family member has significantly higher medical needs than others. Check your plan documents to determine whether your plan uses embedded or aggregate OOPMs. Source: CMS.
Once you hit your out-of-pocket maximum:
Once you've hit or are close to your annual OOPM, scheduling elective care before year-end is one of the most financially rational healthcare decisions you can make. Procedures that might otherwise require significant cost-sharing — joint replacement, cataract surgery, dental work covered by your medical plan — cost you nothing out-of-pocket once the OOPM is reached.
Conversely, be cautious about scheduling expensive elective procedures early in a plan year before your deductible is met — unless you're confident you'll hit your OOPM anyway through other care. The math on timing matters. Understanding your plan's accumulator — how much you've paid toward your OOPM — throughout the year is worth tracking, especially if you're managing a chronic condition or anticipating major care.
The out-of-pocket maximum is your financial safety net — the hard cap on what you'll pay for covered in-network care in a plan year. What counts toward it (deductible, copays, coinsurance) and what doesn't (premiums, out-of-network costs beyond plan limits, non-covered services) determines its real protective value. For anyone who hits or approaches their OOPM mid-year, timing elective care before year-end is a straightforward way to maximize an expensive benefit you've already paid for. Source: HealthCare.gov.