Congress has until December 18, or just a couple of weeks, to pass tax extenders. The House voted earlier this year to make Section 179 expensing permanent, among other tax extenders, but the Senate Finance Committee has opted instead to revive the expired measures for 2015 and extend them through 2016. Tax extenders yet to see approval by Congress include section 179 expensing, the 50-percent bonus depreciation provision, and tax subsidies for biodiesel and wind power.