The Internal Revenue Service has released Revenue Ruling 2017-21, which establishes the applicable Housing Credit percentages under Section 42(b)(1) for November 2017.

The November 2017 Housing Credit percentages are:
7.53% for the 70% Present Value Credit
3.23% for the 30% Present Value Credit

Note: Under section 42(b)(2), the applicable percentage for non-federally subsidized new buildings placed in service after July 30, 2008, shall not be less than 9%.