The payment is the single largest the company has made to the Federal Reserve Bank of New York, and brings the total owed including principal and interest to approximately $21 billion.
Robert Benmosche, president and CEO of AIG, expressed confidence in the company's success.
"AIG is getting stronger every day. We still have more work to do, but we will finish the job and make sure we repay the American taxpayers," Benmosche said in a statement.
"Our insurance businesses are profitable; client retention rates have stabilized; and surrender rates have improved to normal levels. We are starting to see light at the end of the tunnel," he added.