However, precaution is not the most common reason for deleveraging. Deleveraging usually happens after a market downturn and hence is driven by the need to cover loss, which can deplete capital, build a less risky profile, or is required by nervous lenders to prevent default. In the last case, lenders lower the leverage offered by asking for a higher level of collateral and down payment. It is estimated that from 2006 to 2008, the average down payment required for a home buyer in the US increased from 5% to 25%, a decrease of leverage from 20 to 4.