LIBOR (London Interbank Offered Rate) is the benchmark interest rate at which major global banks lend to one another. It is calculated daily by taking the average rate that a panel of major banks say they would be charged if borrowing from other banks. LIBOR is used as a reference rate for trillions of dollars of financial products including mortgages, credit cards, and student loans. In 2012, it was discovered that banks had been manipulating LIBOR submissions, resulting in a major global scandal. The LIBOR benchmark is being phased out and replaced by 2021 with alternative risk-free rates such as SOFR in the US.