Eligibility and Determination of Health Insurance Premium Tax Credits and Cost-Sharing Subsidies: In Brief [November 16, 2016] [open pdf - 754KB]
"Certain individuals without access to subsidized health insurance coverage may be eligible for premium tax credits, as established under the Patient Protection and Affordable Care Act (ACA; P.L. [Public Law] 111-148, as amended). The dollar amount of the premium credit varies from individual to individual, based on a formula specified in statute. Individuals who are eligible for the premium credit, however, generally are still required to contribute some amount toward the purchase of health insurance. [...] Individuals who receive premium credits also may be eligible for subsidies that reduce cost-sharing expenses. The ACA established two types of cost-sharing subsidies. One type of subsidy reduces annual cost-sharing limits; the other directly reduces cost-sharing requirements (e.g., lowers a deductible). Individuals who are eligible for cost-sharing subsidies may receive both types."
CRS Report for Congress, R44425
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html