The Tax Cut and Jobs Act of 2017 made significant changes to the Historic Tax Credit, turning it from a one-year credit with a five-year compliance period to a five-year credit taken ratably. Transition rules were set in place that permitted some projects currently underway to be grandfathered in under the former one-year credit. That grandfathering rule had an end date in June 2020. Now, in light of the COVID-19 pandemic, the IRS has provided an extension of the grandfathering rule, into 2021. To find out if your project is still eligible for the one-year credit, read this Nixon Peabody article.