Could some of the IRS's $1.3 billion in unclaimed tax refunds belong to you?

As April 15 creeps closer, many taxpayers are focusing on refunds. While those taxpayers rush to file their returns on or before Tax Day, the tax deadline takes on a whole other meaning for others. April 15 is not only Tax Day for the 2009 tax year -- it's the last day to claim a refund for the 2006 tax year.

The Internal Revenue Service may be holding more than $1.3 billion in refunds for taxpayers who failed to claim them in 2006. More than 1.4 million taxpayers are due a refund, the IRS said, with the median refund totaling $604.