From the IRS website – just for your information.
S2. Taxpayer A is a single first-time home buyer. Taxpayer B (parent) cosigns for A and does not qualify. Both names are on the mortgage. Can Taxpayer A claim the credit and, if so, how much?
A. Yes. Taxpayer B is not a first-time homebuyer and cannot claim any portion of the credit, but A may claim the entire credit ($7,500 for purchase in 2008; $8,000 for purchase in 2009), if the home was purchased as Taxpayer A’s primary residence.




