The telephone number for the Internal Revenue Service's refund hotline is 800-829-1954. Taxpayers can check the status of a tax refund by dialing this number from any standard telephone, or by calling the TeleTax system at 800-829-4477. A valid Social Security number is required when calling.
Taxpayers can also check the status of a tax refund by using the IRS "Where's my Refund" tool, available on the service's official website. A smartphone application, IRS2Go, is also available at no cost for both Apple and Android devices in the respective app stores. Tax refund updates are generally available about 72 hours after the IRS acknowledges receipt of the return.