"The First Time Homebuyer Credit is a new tax credit included in the recently enacted Housing and Economic Recovery Act of 2008. The credit operates like an interest free loan because it must be repaid over a 15-year period."
"The credit is 10 percent of the purchase of the home, with a maximum available credit of $7,500 for either a single taxpayer or a married couple filing a joint return; $3,750 for married persons filing separate returns. The full credit is available for homes costing $75,000 or more."
"Only the purchase of a main home located in the United States qualifies. You must buy the home after April 8, 2008, and before July 1, 2009. For a home that you construct, the purchase date is the first date you occupy the home."
"Taxpayers who owned a main home at any time during the three years prior to the date of purchase are not eligible for the credit. This means that first-time homebuyers and those who have not owned a home in the three years prior to a purchase can qualify for the credit. If you make an eligible purchase in 2008, you claim the first-time homebuyer credit on your 2008 tax return. For an eligible purchase in 2009, you can choose to claim the credit on either your 2008 (or amended 2008 return) or 2009 return."
"You must begin repaying the loan the second year after claiming the credit. For example, if you properly claim the maximum available credit of $7,500 on your 2008 federal tax return, you must begin repaying the credit by including one-fifteenth of this amount, or $500, as an additional tax on your 2010 federal tax return. Normally, $500 will be due each year from 2010 to 2024."
Article Source: First-Time Homebuyer Credit Information Center