Many different factors can affect the timing of your refund after the IRS
receives your return. Even though they issue most refunds in less than 21
days, it’s possible your refund may take longer. Also, remember to take
into consideration the time it takes for your financial institution to
post the refund to your account or for you to receive it by mail.
For more information, please visit the IRS at
https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions