Nearly half of all homebuyer tax credit on their 2009 tax returns will have to repay the government. According to a report from the Inspector General for Tax Administration, released to the public Thursday, about 950,000 of the nearly 1.8 million Americans who claimed the tax credit on their 2009 tax returns will have to return the money. The confusion comes because homebuyers were eligible for two different credits, depending on when their homes were purchased. Those who bought properties during 2008 were to deduct, dollar for dollar, up to 10% of the home’s purchase price or $7,500, whichever was less. The catch: The money was a no-interest loan that had to be repaid within 15 years.