Usually no. If you are offered health benefits at work and your required contribution costs no more than 9.5 percent of your household income, you will not be eligible for premium tax credits through the Marketplace. If you are required to pay more than 9.5% of your income to enroll in coverage for a single person under your job-based health plan, then you could qualify for premium tax credits in the Marketplace.
In addition, if your job based health plan doesn’t meet the standards for minimum value (for example, if it has an annual deductible higher than $6,350 per person), then you could also qualify for premium tax credits.
When you apply for a premium tax credit in the Marketplace, the application will include a form with questions about the affordability and minimum value of any job-based coverage you may be eligible for. Take that form to your employer and ask them to fill it out. The Marketplace will review the information and let you know whether you qualify for premium tax credit