There are several tax breaks that would have ended 12/31/2016, but in early February, Congress extended the breaks. A few of those are:
Private mortgage insurance (PMI)
$2 million exclusion of forgiven debt on a principal residence
The above the line deduction for up to $4,000 of college tuition.
The personal energy credit
Plus lots of breaks for renewable and emerging energy technology such as electric motorcycles, biodiesel and other alternative fuels. The 30% credit for geothermal heat pumps and wind turbines applies through 2019.