The "Easy Enrollment in Health Care Act" seeks to significantly simplify and expand access to health insurance affordability programs and minimum essential coverage. By January 1, 2028, it mandates a program enabling taxpayers to elect, during their annual tax filing, to have uninsured household members assessed for eligibility in various insurance affordability programs. This includes potential automatic enrollment into zero-net-premium health plans, provided the taxpayer consents to information disclosure and does not opt out or select an alternative plan. To facilitate this, taxpayers must consent to the disclosure of relevant tax return information to health insurance Exchanges, which will then determine eligibility and facilitate enrollment. A supplemental form will collect additional necessary information, though it explicitly excludes requests for citizenship, immigration, or health status. The bill requires the use of clear, simple language on tax forms and establishes secure, electronic interfaces for immediate data transfer between the IRS and Exchanges, with procedures for correcting any errors. Exchanges are tasked with minimizing additional information required from applicants and determining eligibility for Medicaid and CHIP using tax data and other reliable sources. For those eligible for zero-net-premium qualified health plans, Exchanges will identify options and, with taxpayer consent, select a default plan. Individuals will be notified of this selection, encouraged to explore other options, and given opportunities to opt out or switch plans during a special enrollment period. The legislation also modernizes eligibility criteria for insurance affordability programs. States will be required to accept SNAP and TANF eligibility findings for certain financial, citizenship, and residency determinations in Medicaid and CHIP. It also refines how income is determined for advance premium tax credits, introducing an "applicable taxable year" concept and establishing a safe harbor to protect taxpayers from repayment of excess credits under specific conditions. Furthermore, individuals can submit a "change form" to update circumstances and potentially receive increased assistance. To bolster the system, the bill strengthens data infrastructure by granting insurance affordability programs access to the National Directory of New Hires and other public data sources on group health plan coverage. It authorizes federal and state agencies to convey relevant data and allows programs to waive certain verification requirements when reliable data matches are available. The Act appropriates necessary funding for information technology development and operations, establishes an advisory committee for guidance, and mandates a study on the Act's impact and potential improvements.