The U.S. Federal Reserve System released on March 20 the 2011 combined annual comparative financial statements for the Federal Reserve Banks, as well as for the 12 individual Federal Reserve Banks, the limited liability companies (LLCs) that were created to respond to strains in financial markets, and the Board of Governors. These financial statements are audited annually by an independent auditing firm.

The Federal Reserve Banks' 2011 net income of $77.4 billion was derived primarily from $83.6 billion in interest income on securities acquired through open market operations (Treasury securities, federal agency and government-sponsored enterprise (GSE) mortgage-backed securities (MBS), and GSE debt securities).

The Reserve Banks provided for payments of $75.4 billion of their 2011 net income to the U.S. Treasury.

Total Reserve Bank assets as of December 31, 2011, were $2.919 trillion, which represents an increase of $491 billion from the previous year. Holdings of U.S. Treasury securities increased by $683 billion, GSE debt securities holdings decreased by $45 billion, and federal agency and GSE MBS holdings decreased by $156 billion. The balances held under central bank liquidity swap arrangements increased by $99.7 billion.

Federal Reserve Bank assets related to credit and liquidity programs decreased by $95.8 billion.