On the health insurance Marketplace web site, you will find an Application for Health Coverage and Help Paying Costs. Filling out the application online is the fastest, though you can also submit a paper application or call your Marketplace call center and apply over the phone. The Application will ask you basic information about yourself (and any family members who are applying for coverage with you) including your Social Security number and information about your citizenship or immigration status. It will also ask employment and income information, including what’s on your most recent income tax return. Once you’ve submitted the application, the Marketplace will let you know if you qualify for help paying for Qualified Health Plans it offers. It will also let you know if you (or any members of your family) may be eligible for coverage through Medicaid or the Children’s Health Insurance Program.