Instead, the deduction encourages construction of larger, more expensive houses. This leads to higher energy costs and urban sprawl and reduces investment funds available for business. The resulting higher home prices may actually raise costs for first-time purchasers, most of whom don’t itemize or are in the 12% tax bracket and thus gain little or no direct benefit from the deduction anyway. By encouraging people to finance homes with high levels of debt, the deduction increased the likelihood of default when housing prices fell in the financial crisis.