The subprime crisis began in 2006 and was caused by high default rates on risky subprime mortgages and adjustable rate mortgages made to borrowers with low incomes or poor credit histories. Between 2000-2005, low interest rates and rising home prices led many lenders to issue risky subprime loans. However, in 2005 interest rates rose and home prices fell, leaving many subprime borrowers unable to afford their loans. This caused defaults and foreclosures to spike, damaging financial institutions and the broader economy.