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Your employer's plan isn't always the best deal — here's the IRS test that decides if you can even shop the Marketplace instead.
If your job offers health insurance, it's tempting to assume that's automatically your best option — and most of the time, it is. Employer-sponsored plans benefit from a subsidy you don't get anywhere else: your employer covers a large chunk of the premium simply because they want to keep you employed and healthy. But that's not the whole picture. Depending on your income, your household situation, and how good your employer's plan actually is, the ACA Marketplace can sometimes come out ahead — and the rules for figuring out which one wins are more specific than most people realize.
Employer-sponsored insurance is a group health plan your company buys and offers to its workforce, usually paying a meaningful share of the premium on your behalf.
| Feature | How It Works |
|---|---|
| Employer contribution | Employers typically cover 70-85% of the premium for employee-only coverage, and a smaller share for dependents |
| Tax treatment | Your share of the premium is usually deducted pre-tax, lowering your taxable income |
| Guaranteed enrollment | You can't be denied or charged more for health conditions if your employer offers coverage |
| Plan choice | Usually 1-3 plans selected by the employer, not the dozens available on the Marketplace |
The Marketplace (Healthcare.gov or your state's exchange) sells individual health plans to anyone, regardless of employment status. You pay the premium directly, but depending on your household income relative to the federal poverty level, you may qualify for a premium tax credit that reduces your monthly cost — in some cases substantially.
| Feature | How It Works |
|---|---|
| Plan choice | Multiple insurers and metal tiers — Bronze, Silver, Gold, Platinum |
| Subsidies | Premium tax credits scale with household income; lower income generally means a bigger discount |
| Employer contribution | None — you pay the full premium unless a subsidy applies |
| Portability | Not tied to a job, useful for freelancers, early retirees, or between-jobs periods |
This is the part most people miss. If your employer's plan is considered "affordable" and provides "minimum value" under IRS rules, you generally cannot claim a premium tax credit on the Marketplace — even if you decline the employer plan entirely and buy your own coverage instead.
| IRS Test | What It Means |
|---|---|
| Affordability | Your share of the premium for employee-only coverage costs no more than a set percentage of household income (adjusted annually, roughly 9% in recent years) |
| Minimum value | The plan must cover at least 60% of expected costs and include hospital and physician services |
Both tests are applied to the employee-only premium, not the family premium — so an employer plan can be "affordable" for the employee while family coverage under the same plan is genuinely expensive. This gap is often called the "family glitch," and the rules around how it affects a spouse or dependents' subsidy eligibility have shifted in recent years, so it's worth checking current guidance rather than assuming either way.
Say Priya is 32, earns $42,000/year, and her employer offers employee-only coverage for $180/month, which passes the affordability test.
Because the employer offer is affordable, Priya's Marketplace price stays at the full $410/month even though her income would otherwise qualify her for a large subsidy. The math only flips in her favor if her employer's employee-only premium were high enough to fail the affordability test, or if she weren't eligible for the employer plan at all — for example, as a part-time worker below the hours threshold.
The Marketplace is worth comparing seriously when one of these applies: you're not eligible for your employer's plan due to part-time status or a waiting period, your employer's employee-only premium fails the affordability test, your household income is low enough that a subsidy would meaningfully undercut your employer premium, or your employer's plan has a high deductible and thin network while a subsidized Marketplace plan offers better cost-sharing. It's also worth checking if you're comparing family coverage costs and the employer's family premium is unusually high relative to Marketplace family plans in your area.
The premium is only one piece of the real cost. A cheaper plan with a $7,000 deductible can end up costing more in a bad year than a pricier plan with a $2,000 deductible, so it's worth lining up deductibles and out-of-pocket maximums side by side. Networks matter too — Marketplace plans sometimes have narrower networks than employer PPOs, so check whether your doctors and hospitals are actually covered under both options before deciding. Some employer plans are HSA-eligible high-deductible plans that come with an employer HSA contribution, a benefit the Marketplace can't replicate. And if a spouse also has access to employer coverage, it's worth comparing every combination of plans across the household, not just your own.
1. Assuming you can get a subsidy just because you decline employer coverage. Declining an affordable, adequate employer plan doesn't unlock Marketplace subsidies — the IRS still counts you as having had an affordable offer.
2. Comparing only the premium. A lower monthly premium with a much higher deductible can cost more overall if you actually use care during the year.
3. Missing open enrollment windows. Both employer open enrollment and the Marketplace's annual window are time-limited — outside a qualifying life event, you generally can't switch mid-year.
4. Not re-checking eligibility after a life change. A new job, pay raise, marriage, or new dependent can change both your employer's affordability test and your subsidy eligibility, so it's worth rechecking both sides after any major change.
5. Forgetting that a spouse's employer offer can block your subsidy too. If you're eligible to be covered under a spouse's affordable, adequate employer plan, that can disqualify you from a Marketplace subsidy even if you're not enrolled in it.
Key Takeaway: Employer plans usually win on price because of the employer subsidy, but the IRS affordability and minimum-value tests — not your own preference — decide whether you're even allowed to claim a Marketplace subsidy instead. Run both numbers before assuming your employer's plan is the better deal.
Yes, you can always buy a Marketplace plan. The catch is subsidy eligibility — if your employer's offer is affordable and meets minimum value, you'll pay full price on the Marketplace with no premium tax credit.
The IRS sets an affordability percentage of household income each year, applied to the employee-only premium, not the family premium. The exact threshold is adjusted annually, so it's worth checking the current year's number.
It can. If you're eligible to be covered under a spouse's affordable, adequate employer plan, that can also block your Marketplace subsidy, even if you're not enrolled in it.
Generally only during your employer's open enrollment, the Marketplace's annual open enrollment, or after a qualifying life event such as losing coverage, marriage, or having a child.
No. COBRA lets you keep your former employer's exact plan temporarily, but you pay the full premium plus an admin fee with no employer subsidy. Losing job-based coverage is also a qualifying event that opens Marketplace enrollment, which is often the cheaper option.
Disclaimer: This article is for general educational purposes only and does not constitute personalized financial, investment, tax, or legal advice. Figures, rates, and rules mentioned may change over time — verify current details with an official source or a qualified professional before making financial decisions.