(Philadelphia) -- The Internal Revenue Service is well-known for collecting taxpayers’ money, but now it wants to give some of those bucks back. The IRS is reminding people to check and make sure they’ve received any tax refund owed to them. Chalk it up to mailing errors like addresses that were hard to find or address labels that were illegible. That, says IRS spokesman David Stewart, is why more than $153 million dollars worth of tax refunds have yet to be delivered to taxpayers across the country. "In Pennsylvania alone, there are just over 3,000 taxpayers with undelivered refunds. Now that doesn’t sound like a whole lot of people, but it’s six million, folks," he says. "That’s an average refund of almost $2,000 per check, so we’re not talking about chump change here, we’re talking about serious money." Stewart says those stats make the case for people to electronically file their taxes and have the refund sent to them via direct deposit. But, he warns people to beware of e-mail phishing scams that claim to represent the IRS and come promising tax returns to people who just forks over their personal information. Stewart says to check on a tax refund, go to the IRS Website and click on "Where’s my refund?"