The document summarizes changes made to the homebuyer tax credit. It extends the first-time homebuyer tax credit of $8,000 until April 30, 2010 and increases the income limits. It also creates a new $6,500 "step-up" tax credit for homeowners who have lived in the same home for 5 years to purchase a new home between December 1, 2009 and May 1, 2010. Both credits phase out for single and joint filers with incomes over $125,000 and $225,000 respectively.