422.11I  Geothermal heat pump tax credit.
  The taxes imposed under this division, less the credits allowed under section 422.12, shall be reduced by a geothermal heat pump tax credit equal to twenty percent of the federal residential energy efficient property tax credit allowed for geothermal heat pumps provided in section 25D(a)(5) of the Internal Revenue Code for residential property located in Iowa. Any credit in excess of the tax liability is not refundable but the excess for the tax year may be credited to the tax liability for the following ten years or until depleted, whichever is earlier. The director of revenue shall adopt rules to implement this section.
2012 Acts, ch 1121, §1, 4, 5

Section takes effect May 25, 2012, and applies retroactively to January 1, 2012, for tax years beginning on or after that date; 2012 Acts, ch 1121, §4, 5
NEW section