On December 20, 2019, a new spending bill with tax extenders was signed into law. The tax provisions include a retroactive extension of both the 179D Energy-Efficient Commercial Buildings Deduction and the 45L Energy-Efficient Home Credit. Both of these provisions had expired at the end of 2017, but have now been extended through the end of 2020. For the 2018 tax year, taxpayers may need to file amended returns claim these benefits. Click here for details.