WASHINGTON — Buying a home is about to get cheaper for a whole new crop of homebuyers — $6,500 cheaper.

First-time homebuyers have been getting tax credits of up to $8,000 since January as part of the economic stimulus package enacted earlier this year. But with the program scheduled to expire at the end of November, the Senate voted Wednesday to extend and expand the tax credit to include buyers who already own homes. The House could vote on the bill as early as today.

Buyers who have owned their current homes at least five years would be eligible for tax credits of up to $6,500. First-time homebuyers — or anyone who hasn't owned a home in the last three years — would still get up to $8,000. To qualify, buyers in both groups have to sign a purchase agreement by April 30, 2010, and close by June 30.

"This is probably the last extension," said Sen. Johnny Isakson, D-Ga., a former real estate executive who championed the credits.

The homebuyers tax credit is one of two tax breaks totaling more than $21 billion that the Senate included in a bill extending unemployment benefits for those without a job for more than a year. The other would let companies now losing money recoup taxes they paid on profits earned in the previous five years.

"We are still in a world of economic hurt, and Congress must continue to act boldly and creatively," said Sen. Max Baucus, D-Mont., chairman of the Senate Finance Committee. "With the right mix of tax breaks and investments we will get through this recession and get folks working again."

The real estate industry has been pushing to extend and expand the housing tax credit. About 1.4 million first-time homebuyers have qualified for the credit through August. The National Association of Realtors estimates that 350,000 of them would not have purchased their homes without the credit.

Extending and expanding the tax credit for homebuyers is projected to cost the government about $10.8 billion in lost taxes. While the measure passed the Senate by a 98-0 vote, Sen. Kit Bond, R-Mo., questioned its efficiency in stimulating home sales.

"For the vast majority of cases, the homebuyer tax credit amounted to a free gift since it did not affect their decision to purchase a home," Bond said. "And for the small minority of buyers whose decision was directly caused by the credit, this raises the question of whether we are subsidizing buyers who may not have been able to afford buying a home in the first place."

The credit is available for the purchase of principal homes costing $800,000 or less, meaning vacation homes are ineligible. The credit would be phased out for individuals with annual incomes above $125,000 and for joint filers with incomes above $225,000.

The credit would be extended an additional year, until June 30, 2011, for members of the military serving outside the United States for at least 90 days.

Expanding the tax credit for money-losing companies is projected to cost $10.4 billion.

The Senate has voted to extend and expand a popular tax credit for homebuyers that was scheduled to expire Nov. 30. The House is expected to schedule a quick vote on the bill, part of a package that also extends unemployment benefits for people out of work more than a year. How the homebuyer tax credit would work:<b>Tax credit: </b>Ten percent of the purchase price of a primary residence, up to a maximum of $8,000 for first-time homebuyers and $6,500 for repeat buyers. First-time homebuyers are defined as people who have not owned a home in the previous three years. Repeat buyers must have owned their current home at least five years. The credit cannot be used for houses costing more than $800,000.Deadline for qualifying: Purchase agreements must be signed by April 30, 2010, and closings must be final by June 30.<b>Military deadline:</b> The deadline is extended by a year for members of the military who have served outside the U.S. for at least 90 days from Jan. 1, 2009, to May 1, 2010.Income limits: Individuals with annual incomes up to $125,000 and joint filers with incomes up to $225,000 qualify for the full credit. Individuals with incomes up to $145,000 and joint filers with incomes up to $245,000 qualify for reduced credits.<b>How to apply:</b> Taxpayers can claim the credit on their federal income tax returns. If the credit exceeds their tax bill, the government will issue a payment. Taxpayers who want immediate refunds can amend their tax returns for 2008 to claim the credit.Cost: $10.8 billion.Source: Joint Committee on Taxation