You didn't say when you filed, and you didn't say whether you e-filed or filed by mail. And if you e-filed, you didn't say whether your e-file was accepted. Refunds for most e-filed federal tax returns are paid within 21 days after the return is accepted. See the following page on the IRS web site for more information about refund timing.
Reasons why some tax refunds filed electronically take longer than 21 days
