I checked this credit out before buying my new 2007 HCH. Being single, and even with itemized deductions for the house, state and local income taxes, contributions, etc., I will still get the full $2,100 when I file next year (using 2006 forms versus 2007 which will be in effect then). Also, Colorado supports the alternative vehicles, with a $2,756 tax deduction for the HCH.