You landed the new job — congratulations. But now HR is asking you to pick a health plan within 30 days, and you're wondering whether the employer plan is actually better than the marketplace plan you already have. This is a genuinely important financial decision, and the answer isn't always obvious. Here's how to think through it clearly.

The 30-Day Clock at a New Job

Most employers give new employees 30 days from their start date (or from the date benefits become available) to enroll in the company health plan. Some give 60 days. This window is separate from the ACA's 60-day Special Enrollment Period — and it's often shorter. Read your benefits packet carefully on day one. Don't assume you have more time than you do.

If you miss the employer enrollment window, you typically have to wait until the company's next open enrollment period — which could be months away — to get employer coverage.

Understanding the ACA "Affordability" Rule

Here's the key rule that determines whether you can keep your ACA marketplace subsidy after starting a new job: employer coverage is considered "affordable" under the ACA if the employee-only premium costs no more than 9.02% of your household income in 2026.

If your new employer's plan meets this threshold (and covers at least 60% of costs), you lose eligibility for marketplace premium tax credits — even if the employer plan isn't actually that great. The ACA considers you "covered" by affordable employer insurance, and subsidies phase out.

Importantly: only the employee-only portion of the premium is tested for affordability. If adding a spouse or children makes the premium unaffordable, the ACA's "family glitch" rules have been updated (as of 2023) so that family members may still qualify for marketplace subsidies separately.

Run the Numbers Before You Decide

Don't assume employer coverage is better just because it's employer coverage. Some Florida marketplace plans — especially with subsidies — are competitive with or better than employer plans on total cost. Use the Florida Plan Finder to model both options before your enrollment deadline.

How to Compare the Two Plans

To make a fair comparison, look at these four factors for each option:

  1. Monthly premium — what you pay out of pocket each month (after any employer contribution or ACA subsidy)
  2. Annual deductible — how much you pay before the plan kicks in for most services
  3. Out-of-pocket maximum — the most you could pay in a bad year
  4. Network — are your doctors and preferred hospitals in-network? This matters more than almost anything else

A plan with a lower premium but an out-of-network surgeon can cost you far more than a plan with a higher premium and better network coverage. See our guide to HMO vs PPO plans for help understanding network trade-offs.

What Happens to Your Current ACA Plan?

Starting a new job is a qualifying life event that allows you to terminate your marketplace plan outside of open enrollment. Once employer coverage begins, you should notify HealthCare.gov to cancel your marketplace plan — you don't want to pay for both. If you received advance premium tax credits for months when you were eligible for affordable employer coverage, you may owe a portion back at tax time.

If there's a gap between your start date and when employer coverage kicks in (a common 30-day waiting period), you can typically keep your marketplace plan through that gap and then cancel once employer coverage begins.

During the Waiting Period

Many employers have a 30-day waiting period before benefits start. During that gap, your options are:

  • Keep your current ACA plan — if you have one, just keep it active until employer coverage starts
  • COBRA from a prior job — if you left another job to take this one, you can elect COBRA retroactively if needed during the waiting period
  • Short-term gap coverage — for very brief gaps (under 30 days), some people opt for a short-term plan, though these have significant limitations

For more on managing job transitions and coverage, see our article on what to do about health insurance between jobs.

When the Marketplace Is Actually Better

Marketplace plans can win out in these scenarios:

  • Your employer plan is expensive relative to your income (above the 9.02% affordability threshold), so marketplace subsidies still apply
  • Your employer only covers a small portion of the premium, making the "deal" less attractive
  • Your preferred doctors are not in the employer plan's network but are in-network for a marketplace plan in your area
  • Your employer plan has a very high deductible with no HSA contribution offset
Get a Side-by-Side Comparison

A licensed Florida advisor can pull up marketplace plan options for your zip code and help you compare them directly to your employer plan. Get a free consultation — call .

Frequently Asked Questions

If I take employer coverage at my new job, can I also keep my ACA marketplace plan?
No. Once you become eligible for employer-sponsored coverage that meets the ACA's affordability and minimum value standards, you lose eligibility for premium tax credits on the marketplace. Keeping both would mean paying full price for the marketplace plan while also paying for employer coverage — generally not a good financial move.
How long do I have to enroll in my new employer's health plan?
Most employer plans give you 30 days from your date of hire (or the date coverage becomes available) to enroll. Some plans extend this to 60 days. This is shorter than the ACA's 60-day SEP window, so check your benefits packet immediately when you start — do not assume you have until the end of the month.
What if my new employer has a 30-day waiting period before benefits start?
You can often keep your ACA marketplace plan through the waiting period, then cancel it once employer coverage kicks in. Starting a new job is a qualifying event that lets you terminate marketplace coverage outside of open enrollment. Alternatively, COBRA from a prior job can bridge a short gap.
What does 'affordable' employer coverage mean under the ACA?
Under the ACA, employer coverage is considered 'affordable' if the employee-only premium costs no more than 9.02% of the employee's household income in 2026. If the employer plan meets this threshold and covers at least 60% of costs (minimum value), you are not eligible for ACA marketplace subsidies — even if adding family members to the plan would cost significantly more.

Licensed Florida Health Insurance Producer

This resource is maintained by a licensed Florida health insurance producer (NPN #21249133). We help Florida residents find ACA marketplace plans, compare coverage options, and enroll in health insurance. Content is informational and not legal or financial advice.

Sources & Further Reading