Loan Modification

The confusion comes because homebuyers were eligible for two different credits, depending on when their homes were purchased.

Those who bought properties during 2008 were to deduct, dollar for dollar, up to 10% of the home's purchase price or $7,500, whichever was less. The catch: The money was a no-interest loan that had to be repaid within 15 years.

Had they waited to buy until 2009, they could have gotten a much sweeter deal. Congress extended the credit and made it a refund rather than a loan.