The IRS releases most refunds within 21 calendar days
after the e-file has been accepted (received), not 21 days from the e-filing
date. For mailed returns, allow 5-6 weeks from the postmark date. (If you
claimed an Earned Income Tax Credit and/or an Additional Child Tax Credit and
filed before February 15, 2018, you’ll get your refund the week of February 27
at the earliest.)
For more information please click the link below.
https://ttlc.intuit.com/replies/5340655