Be sure when checking the IRS Where’s My Federal Refund? site, that you are entering only your Federal refund amount. This can be found on your Federal form 1040, line 21a. If you paid any fees out of your federal refund, use the refund figure prior to the deduction of he fees. Also if you filed joint, be sure to enter the filers name that appears first on the return.
Even though the IRS issues 9 out of 10 tax refunds within 21 days, it's possible your return may require additional review and take longer to process.
Please see the TurboTax FAQ below for more information:
Why do some refunds take longer than others?