Households shopping for an Affordable Care Act marketplace plan for 2027 will face a higher ceiling on what a single illness or injury can cost them out of pocket. The Centers for Medicare & Medicaid Services has finalized $12,000 as the most a self-only exchange plan can require an enrollee to pay in deductibles, copays and coinsurance combined for the 2027 plan year, up from $10,600 this year. For a family buying coverage together, the new limit is $24,000. The change lands right as open enrollment shoppers start comparing plans and weighing how much financial risk they can absorb before a plan’s coverage stops leaving gaps and starts paying the rest in full.
CMS Sets the 2027 Marketplace Cap at $12,000
The figure comes from the annual rule CMS uses to set cost-sharing limits for Affordable Care Act exchange plans, formally called the Notice of Benefit and Payment Parameters. Each year the agency recalculates the ceiling using a statutory formula tied to premium growth, then locks it in before insurers file the next year’s plan designs. Only certain costs count toward the limit — deductibles, copays and coinsurance for covered, in-network care — while premiums, out-of-network bills and services a plan does not cover are excluded and can still add up on top of it.
For 2027, that formula pushed the self-only limit from $10,600 to $12,000, an increase of roughly 13 percent in a single year, with the family limit moving to $24,000. Enrollees in certain cost-sharing reduction silver plans, available to some lower-income shoppers, are held to a separate, lower ceiling set under the same rule rather than the standard $12,000 figure.
CMS finalized both numbers in the 2027 Notice of Benefit and Payment Parameters final rule, released in mid-May and covering plan year 2027. Once an enrollee’s qualifying spending reaches the applicable ceiling in a plan year, the insurer has to start covering 100 percent of the cost of covered services for the remainder of that year.
Free Medicare route finder: Help with Medicare costs runs through several separate programs, and each one uses a different form. Find the right one with the free route finder.
Free download from RetireShield. Getting it also signs you up for the free Retirement Money Brief, a weekday email. Unsubscribe anytime.
A Court Fight Is Blocking Other Parts of the Same Rule, Not This Cap
The 2027 rule did more than reset the standard ceiling. It also let insurers sell bronze and catastrophic plans with out-of-pocket limits set higher than the standard cap — as much as $15,600 for a single enrollee, a separate flexibility layered on top of the base limit rather than a replacement for it. That higher figure, along with several other provisions in the same rule, is now blocked.
On July 16, 2026, a federal judge in Maryland stayed the bronze-and-catastrophic expansion, along with rule changes on income verification, special-enrollment checks and the removal of required standardized plan options, in a lawsuit brought by the City of Columbus and other municipalities and advocacy groups. CMS confirmed the scope of that order in an updated statement to exchanges and insurers, listing the $15,600 expansion among the provisions that “didn’t or won’t go into effect as finalized.” The base $12,000 self-only and $24,000 family limits do not appear on that list.
Practically, that means bronze and catastrophic plans sold for 2027 stay bound by the same standard ceiling as every other exchange plan for now, not the higher $15,600 figure the rule had tried to permit, while the underlying lawsuit continues.
The Extra Cost Lands Once Coverage Meets Its Ceiling
For someone who needs surgery, an emergency room visit or ongoing specialty medication, the practical effect is straightforward: an exchange plan can now legally require $1,400 more in combined cost-sharing before it starts covering everything. For a household on a family plan, that gap is $2,800 wider than what 2026 plans could charge. Someone who reached the old $10,600 ceiling early in the year and expected full coverage to kick in will instead keep paying coinsurance and copays for longer before the plan absorbs the rest.
The rule took effect on July 20, 2026, giving insurers time to build the new limit into the plans now on sale for the open enrollment period running November 1, 2026 through January 15, 2027. Shoppers comparing bronze, silver and gold tiers this fall should check each plan’s stated out-of-pocket maximum directly in its summary of benefits rather than assume last year’s number still applies, since the ceiling can vary by plan design within the new cap.
Early Retirees, the Self-Employed and the Chronically Ill Reach It Fastest
The higher ceiling lands hardest on people who buy coverage without subsidies large enough to erase cost-sharing, along with early retirees and self-employed workers who rely on the marketplace before qualifying for Medicare. Anyone managing a chronic condition that requires regular infusions, a scheduled surgery or brand-name prescriptions is more likely to reach the maximum within a plan year, which means the extra $1,400 comes due in real dollars rather than staying a distant possibility.
CMS’s most recent public statement on the litigation, dated August 4, 2026, does not signal any further change to the base limit. Until that changes, $12,000 for a single enrollee and $24,000 for a family are the numbers households should plan their 2027 marketplace budget around.
The Cost-Sharing Rules Change Again at Medicare Age
The marketplace out-of-pocket ceiling only governs coverage bought through the exchange; it says nothing about what happens once a household ages out of the marketplace and into Medicare, where an entirely separate set of cost-sharing rules and paperwork takes over. Medicare runs its own annual limit on drug costs, its own appeals process when a prior authorization gets denied, and its own state-by-state cost-help programs, none of which resembles the marketplace’s single combined cap covered above.
The Medicare Cost & Coverage Protection Kit is a 10-page kit with 51 state Medicare cost-help packs and a breakdown of the new Part D out-of-pocket cap, plus the prior-authorization appeal steps for a denied claim.
See the Medicare Cost & Coverage Protection Kit.
AI-assisted research and drafting; reviewed by an editor.
