The Internal Revenue Service is looking to return about $5 million in undelivered refund checks to taxpayers in the Carolinas.

“More than 4,400 Carolina taxpayers are due one or more refund checks that could not be delivered because of mailing address errors,” said Mark Hanson, Internal Revenue Service spokesperson for North Carolina and South Carolina.

A taxpayer only needs to update his or her address once to receive all checks due. Nationwide, undelivered refund checks average $1,471 this year.

If a refund check is returned to the revenue service as undelivered, taxpayers can generally update their addresses with the “Where’s My Refund?” tool on A taxpayer must submit his or her Social Security number, filing status and amount of refund shown on their 2009 return.

Taxpayers may also call 800-829-1954 to check the status of their refunds over the phone.

The agency urges taxpayers to file taxes electronically and request direct deposit to avoid missing or stolen refunds.