The growth in U.S. health care spending has become a focal point in debates over federal and state health care reform. While the problem is easy to quantify, strategies for slowing rising expenditures are controversial, and evidence of their effectiveness is often elusive. Our full report provides background that describes the problem and reviews the cost containment provisions of the Affordable Care Act (ACA). It also presents estimates of cost savings from several policies that go beyond those included in the ACA. In this appendix, we provide more detail on the methods used to generate these cost savings estimates.