|  | 2.__Credit refundable in certain cases.__A taxpayer that is a | 
| National Historic Landmark developer is allowed a refundable | 
| credit in an amount equal to the credit determined by the | 
| taxpayer under Section 47 of the Code for the taxable year.__The | 
| refundable credit allowed by this subsection is in lieu of the | 
| credit that is allowed to the taxpayer by subsection 1 or that | 
| would otherwise be passed through to its partners or | 
| shareholders, if any.__The credit is allowed only for tax years | 
| that begin on or after January 1, 2006 but before January 1, | 
| 2010.__The credit may not exceed $500,000 per year, and unused | 
| credit amounts may be carried forward only through the 2009 tax | 
| year.__In the event that more than one National Historic Landmark | 
| developer qualifies for the refundable credit allowed by this | 
| subsection, the maximum annual credit amount and credit carry- | 
| forward limitations established by this subsection apply to all | 
| such developers collectively, and if necessary the State Tax | 
| Assessor shall prorate the credits between those developers based | 
| on their respective shares of qualified expenses incurred.__For | 
| the purposes of this subsection, "National Historic Landmark | 
| developer" means a person that owns 2 or more structures located | 
| in the Kennebec Arsenal District National Historic Landmark. |