On May 31, 2013, the Medicare Board of Trustees released its annual assessment of the financial condition of the Social Security and Medicare trust funds. The Board projects that the Medicare hospital insurance trust fund will remain solvent until 2026, which is two years later than forecast last year. The Board attributes the improved outlook in part to lower-than-expected Medicare Part A spending in 2012 (particularly for skilled nursing facilities) and lower projected Medicare Advantage costs. The Board points out, however, that projections of Medicare costs are highly uncertain due to a number of factors, including questions about whether Congress will continue to override the Medicare physician fee schedule/sustainable growth rate (SGR) formula and how the ACA will impact spending.