Homebuyer Tax Credit Oversight and Accountability Act of 2009

Homebuyer Tax Credit Oversight and Accountability Act of 2009 - Amends the Internal Revenue Code, with respect to the first-time homebuyer tax credit, to: (1) deny such credit to taxpayers under the age of 18; (2) require taxpayers claiming such credit to attach to their returns a properly executed copy of the settlement statement used to purchase their residence and a certified statement of their eligibility for such credit from the real estate broker, settlement agent, or mortgage lender; and (3) prohibit a credit for residences acquired from a spouse. Requires the Commissioner of Internal Revenue to investigate, prosecute, and provide quarterly reports on instances of fraud related to the first-time homebuyer tax credit.

Requires tax return preparers to file tax returns electronically unless they reasonably expect to file 100 or fewer individual income returns in a calendar year.