WASHINGTON — The Federal Reserve has extended a program intended to spur lending to consumers and small businesses at lower rates, but the central bank will not expand the types of loans made.

The Fed this morning said extended its Term Asset-Backed Securities Loan Facility through March 31 for most of the types of loans it makes. The program was scheduled to end on Dec. 31.

The TALF started in March and figures prominently in efforts by the Fed and the Obama administration to ease credit, stabilize the financial system and help end the recession.

Under the program, investors use the funds to buy securities backed by auto and student loans, credit cards, business equipment and loans guaranteed by the Small Business Administration.

The program for commercial mortgage-backed securities was extended through June 30 because issuing new securities in that area "can take a significant amount of time to arrange," according to a joint news release from the Fed and the Treasury Department.