A taxpayer who is due a refund but who fails to file a return has three years from the due date of the return to file the return and claim the refund. After that the refund is lost. The IRS estimates that there is 950 million dollars in unclaimed refunds for the 2012 tax year. In general the ability to claim those refunds expires on April 16, 2016. If you have unfiled tax returns and need assistance filing them, we can help.