The purpose of the IRS 1095-A form is to provide information about the premium tax credits that were applied to an individual or family's health insurance coverage purchased through the Health Insurance Marketplace during the tax year. It shows details about the coverage, the monthly premium amount, and the amount of any advance premium tax credits received. This information is used by individuals when filing their federal tax returns to reconcile the premium tax credits received with the actual amount they were eligible for based on their income.