The fastest way to check on a federal tax refund is the IRS's own "Where's My Refund?" tool, available on IRS.gov or through the IRS2Go mobile app — no login or account creation required for the basic lookup. * Timing matters before you check: if you e-filed, wait 24 hours before the tool will show anything, since it takes that long for your return to register in the system. If you mailed a paper return, the wait is much longer — plan on about 4 weeks before status information appears at all. * To pull up your status, you'll need three pieces of information: your Social Security number or Individual Taxpayer Identification Number, your filing status (single, married filing jointly, etc.), and the exact whole-dollar amount of the refund you're expecting — not an estimate, the precise figure from your return. * The tool doesn't update in real time, so checking it every hour won't get you new information. IRS systems refresh the data once a day, usually overnight, meaning a single daily check is all that's actually useful. * If you'd rather not use the online tool, or don't have reliable internet access, the IRS also runs an automated phone hotline at 800-829-1954 that provides the same status information. For most taxpayers who filed electronically with direct deposit and no issues on their return, the IRS generally issues refunds within 21 days of the return being accepted — paper filers should expect a considerably longer wait.