HRS § 235-2.45
The 2008 amendment applies to taxable years beginning after December 31, 2007; provided that the retroactive and prospective effective dates contained in the congressional acts relating to the Internal Revenue Code and enacted during 2007 shall be operative for chapter 235. L 2008, c 93, §7.
The L 2009, c 178 amendment applies to investments made, renovation costs incurred, or eligible depreciable tangible property placed in service on or after May 1, 2009. L 2009, c 178, §10.