Friend had to show the IRS proof by providing the final doc, settlement statement that shows the date property was acquired and address. That comes from the title company. Form 5404 needs to be filed with the IRS. He did not get the credit until about 2 months later cause IRS wants to verified that he did purchase the home. And yes it is up to 10% or $8000.00 of the purchase price. And also it depends on your gross income if you qualifly. Buyers need to verify with their Tax Preparer,CPA, or Tax Attorney.