Millions of additional people may be able to take advantage of the new and improved first-time homebuyer tax credit now, and it's not just for first-time homebuyers anymore. You may qualify.

President Obama signed legislation Friday to extend unemployment benefits to American workers. The law also includes provisions that vastly expand the number of people eligible for homebuyer credits by boosting the income eligibility limits, giving buyers more time, creating a $6,500 credit for longtime homeowners and launching more accommodating rules for members of the military. Here are the details.

THE $8,000 CREDIT

If you were locked out of the first-time homebuyer credit in the past simply because you earned too much, there's good news.

Now you can qualify for the full $8,000 first-time homebuyer credit with a single income of up to $125,000 and married income of up to $225,000. Those who earn more will be phased out.

The credit ends completely once single income exceeds $145,000 and married income exceeds $245,000. Still, that's a big boost from the previous law that shut off the credit for singles earning more than $95,000 and married couples who earned more than $170,000.

OTHER ELIGIBILITY RULES

-- You must not have owned another home for at least the previous three years.

-- You must buy a home (or have a binding contract to buy) by April 30, 2010. Under the new law, if the sale doesn't close on time, you can still get the credit as long as you've got a binding contract on the ending date, said Jackie Perlman, tax analyst with the Tax Institute at H&R Block in Kansas City, Mo.

-- You must be older than 18 and not claimed as a dependent by any other taxpayer.

-- The property you purchase cannot have been acquired from a relative.

-- You must attach a copy of your settlement statement with your tax return to claim the credit.

-- Most buyers also must continue to own this new home for at least three years. If they sell in less time, the government will demand that they pay the credit back, said Clint Stretch, director of tax policy with Deloitte Tax.

SPECIAL RULES FOR THE MILITARY

The government will not require repayment of the credit if you are a member of the military and had to sell or stop using the home as a residence because of extended duty, however.

In addition, those serving outside of the U.S. during any part of 2009 or early 2010 will get an additional year to claim the credit. In other words, the credit ends for most people on April 30, 2010, but it lasts until April 30, 2011, for active-duty service members working overseas.

THE $6,500 CREDIT Continued...