We have not applied for marketplace, we have employment health insurance and claim our son as a dependent. How should he answer this question when he files his income taxes?
Are both of these true for you at any time in 2014? YES OR NO
– You had federal marketplace (healthcare.gov) insurance or any state or regional marketplace insurance (doesn’t include Medicaid).
– You told the marketplace that you’re not a dependent.
Generally, if you or your dependent didn't have marketplace coverage then you answer no to Marketplace related questions on tax forms. These questions are both in regard to clarifying if and how you or your dependents used the Marketplace. It clarifies that the Marketplace doesn't include Medicaid (even though you can enroll in Medicaid through the marketplace).