In preparing the March 2012 baseline budget projections, CBO and the staff of the Joint Committee on Taxation (JCT) have updated estimates of the budgetary effects of the health insurance coverage provisions of the Affordable Care Act (ACA). That legislation comprises the Patient Protection and Affordable Care Act (Public Law 111-148) and the health care provisions of the Health Care and Education Reconciliation Act of 2010 (P.L. 111-152).