The Federal Reserve kept the interest rate at 0.25 percent during the meeting held on February 28th and said it would be patient in deciding when to raise interest rates. Interest Rate in the United States averaged 6.04 Percent from 1971 until 2014, reaching an all time high of 20.00 Percent in March of 1980 and a record low of 0.25 Percent in December of 2008.