Millions of workers assume that declining their job's health plan automatically opens the door to a subsidized Marketplace policy. It does not. The ACA's employer-coverage rule, often called the firewall, blocks a premium tax credit for anyone who is offered coverage that is both affordable and meets minimum value, whether or not that person actually enrolls in it. Getting this wrong is one of the most common reasons Marketplace enrollees end up owing back a credit at tax time.
This guide walks through the exact 2026 affordability threshold, how the family glitch fix changed the rules for spouses and dependents, when a small employer or an unenrolled COBRA offer does not count, and what to do if your employer's plan blocks your subsidy. For the broader income picture, see who qualifies for ACA subsidies and what counts as income for ACA subsidies.
Coverage Breakdown
Direct answer
No. Employer-sponsored coverage that costs 9.96% or less of your 2026 household income for self-only coverage, and meets the ACA's 60% minimum value standard, blocks a premium tax credit for you, even if you skip the plan and buy Marketplace coverage instead. An unaffordable offer, a plan that fails minimum value, or no offer at all can still leave you eligible. Family members are tested separately under the 2023 family glitch fix.
What Counts as 'Affordable' in 2026
Affordability starts with a single IRS number. Under Revenue Procedure 2025-25, an employer's health plan is affordable for 2026 if the premium the employee pays for the cheapest self-only option is 9.96% or less of household income, up from 9.02% in 2025. A household earning $50,000 in 2026 clears the affordability test if the employee-only premium is $4,980 a year, or about $415 a month, or less. That figure looks only at the self-only premium; the cost of adding a spouse or children is irrelevant to the employee's own eligibility test.
Minimum value is the second test, and both must be met before an employer offer blocks a subsidy. A plan meets minimum value if it is designed to pay at least 60% of the total allowed cost of covered benefits and includes substantial coverage of physician and inpatient hospital services. Most standard employer group plans clear this bar easily. The exception is a bare-bones limited-benefit or fixed-indemnity plan that some employers layer on top of, or instead of, real coverage. An affordable offer that fails minimum value does not block a premium tax credit, even though the price alone looks reasonable.
The Family Glitch Fix: Family Coverage Gets Tested Separately
Family coverage used to ride on the same 9.96% test as self-only coverage, and that created what advocates called the family glitch. Before 2023, the IRS only checked whether the employee's own self-only coverage was affordable, so a $200-a-month self-only premium could pass easily while adding a spouse and two kids pushed the family premium to $1,800 a month, well over 40% of household income, with no subsidy available to fix it. A final IRS rule effective January 1, 2023 fixed this gap, and the fix remains in place for 2026.
Family affordability is now its own test. If the portion of the premium the employee would pay for family coverage exceeds 9.96% of household income in 2026, the employee's spouse and dependents can shop the Marketplace and claim a premium tax credit, even though the employee stays blocked because their own self-only offer is affordable. Coverage codes on the employer's Form 1095-C often signal which test applies; a benefits administrator or HR representative can confirm the actual dollar premiums for both the self-only and family tiers.
Eligibility, Not Enrollment, Is What Blocks the Subsidy
Marketplace eligibility rules follow what you were offered, not what you signed up for. Declining an affordable, minimum-value employer plan and buying an ACA-compliant Marketplace policy with a premium tax credit anyway is not allowed. Healthcare.gov asks directly whether an offer of job-based coverage exists and whether it meets the price and value tests; answering that question incorrectly, intentionally or not, is a common reason a household later owes back an advance premium tax credit at tax time. Employers with 50 or more full-time-equivalent employees, called applicable large employers, generally must offer affordable, minimum-value coverage or risk a penalty under Internal Revenue Code Section 4980H if even one employee receives a subsidy.
Two carve-outs matter. First, employers with fewer than 50 full-time-equivalent employees are not required to offer coverage at all; if yours does not, no employer offer exists and the firewall never applies. Second, COBRA continuation coverage and retiree health coverage only count against you if you are actually enrolled, not merely eligible. Someone who qualifies for COBRA after a layoff but never enrolls can still shop the Marketplace for a subsidized plan. The same eligibility rule extends past employer coverage: anyone eligible for Medicare, including Original Medicare Part A alone, Medicaid, CHIP, or TRICARE also loses premium tax credit eligibility, regardless of employer status.
Why This Rule Matters More After the 2026 Subsidy Cliff Returned
The enhanced premium tax credits from the American Rescue Plan Act and the Inflation Reduction Act expired December 31, 2025, so the original 400% federal poverty level subsidy cliff is back for the 2026 plan year. Marketplace subsidies for 2026 coverage use the 2025 federal poverty guidelines by statute, putting the 400% FPL cutoff at $62,600 for a single person, $84,600 for a two-person household, $106,600 for a household of three, and $128,600 for a family of four. Anyone above that line receives no premium tax credit at all, which makes correctly applying the employer-offer test even more consequential this year: a household that assumes it qualifies for a subsidy because its income sits under the cliff can still be shut out entirely by an affordable employer offer.
How to Check Whether Your Employer's Offer Is Affordable
Three sources answer the affordability question without guesswork. Ask your HR or benefits team for the exact employee-only premium for the lowest-cost plan that meets minimum value, then divide it by your best estimate of 2026 household income; if the result is 9.96% or less, the offer is affordable. Look at Form 1095-C if your employer issued one for a prior year: the employee-only premium line shows what the employer used for its own affordability safe harbor calculation. Or start a Healthcare.gov application, which asks about job-based coverage directly and flags whether an offer appears to make you ineligible for a subsidy.
One distinction trips up a lot of applicants. Employers calculate affordability using their own safe harbors, W-2 wages, rate of pay, or the federal poverty line, because they only need a reasonable proxy for household income to avoid a penalty. Your actual premium tax credit eligibility uses your real household income reported on IRS Form 8962 at tax time, not the employer's safe harbor estimate. That gap means it is possible, though uncommon, for an employer to treat its own offer as affordable under a safe harbor while your actual income makes the same offer unaffordable for premium tax credit purposes, or the reverse.
Alternatives If Your Employer's Offer Blocks a Subsidy
Losing subsidy eligibility because your employer's offer is affordable does not mean you have no options. A few paths can lower your real cost without a premium tax credit.
- Buy an ACA-compliant Marketplace plan at full price. You still get guaranteed issue coverage, no preexisting condition exclusions, and the 10 essential health benefits categories, just without a premium tax credit.
- Ask HR about a Section 125 premium-only or cafeteria plan. Paying your share of the employer premium with pre-tax payroll dollars lowers your taxable income even though it does not change the affordability percentage test.
- Pair a high-deductible employer plan with a Health Savings Account. Pre-tax HSA contributions (2026 limit: $4,400 self-only, $8,750 family) reduce taxable income and build tax-free savings for medical costs.
- Ask about a cash-in-lieu or opt-out payment. Some employers offer taxable cash to employees who decline coverage; that cash can help offset a full-price Marketplace premium.
- Check for a state-based supplemental subsidy program. A few states run their own additional premium assistance layered on top of federal rules; check your state exchange even if you are blocked from the federal premium tax credit.
Frequently Asked Questions
What is the ACA employer-coverage firewall?
The firewall is the rule that blocks a premium tax credit for anyone offered affordable, minimum-value coverage through a job, whether or not they enroll in it. It exists so the federal government does not subsidize Marketplace coverage for people who already have access to reasonably priced job-based insurance. The firewall applies to the employee directly; spouses and dependents are tested separately under the 2023 family glitch fix.
What does 'affordable' mean for ACA purposes in 2026?
Under IRS Revenue Procedure 2025-25, an employer offer is affordable in 2026 if the employee-only premium for the cheapest qualifying plan is 9.96% or less of household income, up from 9.02% in 2025. Only the self-only premium counts for the employee's own eligibility test; family premiums are evaluated separately under the family glitch fix.
What is minimum value coverage?
A plan meets minimum value if it is designed to pay at least 60% of the total allowed cost of covered benefits and includes substantial coverage of physician and inpatient hospital services. Coverage must be both affordable and meet minimum value to block a premium tax credit; failing either test alone can still leave you subsidy-eligible.
Does the family glitch fix still apply in 2026?
Yes. The IRS rule that took effect January 1, 2023 remains in place for 2026. Family coverage affordability is tested against the cost of family, not self-only, coverage, so a spouse or dependent can qualify for a premium tax credit even when the employee's own self-only offer is affordable.
What if my employer doesn't offer coverage at all?
No offer means no firewall. Employers with fewer than 50 full-time-equivalent employees are not required to offer coverage under the ACA, and if they don't, nothing blocks you from claiming a premium tax credit based on income alone (100% to 400% of the federal poverty level for 2026 coverage).
Does COBRA or retiree coverage block my subsidy eligibility?
Only if you actually enroll. Being merely eligible for COBRA continuation coverage or a retiree health plan after leaving a job does not disqualify you from a premium tax credit. Enrolling in either one counts as having other minimum essential coverage and can block PTC eligibility for the months you are enrolled.
What happens if I get a subsidy I wasn't eligible for?
You may have to repay some or all of the advance premium tax credit when you file your federal taxes on Form 8962. Update your Healthcare.gov application as soon as your job-based coverage offer or its cost changes to avoid owing a large reconciliation amount at tax time.
Does this rule affect people eligible for Medicare or Medicaid too?
Yes, the same structure applies. Anyone eligible for Medicare, including Original Medicare Part A alone, Medicaid, CHIP, or TRICARE cannot claim a premium tax credit, the same way someone with an affordable employer offer cannot. Each of these coverage types counts as minimum essential coverage that satisfies the ACA's other-coverage test.
