"The bill provides for a $8,000 tax credit that would be available to first-time home buyers for the purchase of a principal residence on or after January 1, 2009 and before December 1, 2009.
The credit does not require repayment.
Most of the mechanics of the credit will be the same as under the 2008 rules:
the credit will be claimed on a tax return to reduce the purchaser's income tax liability.
If any credit amount remains unused, then the unused amount will be refunded as a check to the purchaser".
Note: There is a recapture if you sell your home within 3 years, at which the credit will be recaptured upon the sale. This only applies to folks who purchase in 2009, as the changes to the stimulus bill are effective January 1, 2009.
As a First-Time Home Buyer, if you purchased a home on or after April 9, 2008, and before January 1, 2009, you may be eligible for a $7,500 tax credit as the result of the passage of The Housing and Economic Recovery Act of 2008 (under President Bush).
For more details and to answer specific questions you may have click the following link for First-Time Homebuyer Tax Credit Frequently Asked Questions -
Please consult with your tax professional for any tax advice pertaining to tax credits and whether you are eligible.