Provides an online refund-tracking tool allowing taxpayers who have filed a federal tax return to check the status of their refund. Also provides a toll-free Refund Line. Offers a free smartphone app that allows checking for refund status, paying tax bills, and finding tax preparation assistance. Toll-Free Refund Line should only be used if: It has been 21 days or more since an electronic filing; More than six weeks since a paper return has been mailed; or The "My Refund" tool says to contact IRS.