If you e-filed, start by checking your e-file status. Track your refund with the IRS Where's My Refund?.
It
usually takes up to 21 days before a filer receives their refund.
If you
have mailed your tax return the IRS says that you can start tracking it 4 weeks
after mailing your paper return. Everyone has a different tax situation and sometimes, this can affect
refund timing. If 21 days has passed, contact the IRS at 1800-829-1040.
If there is no possibility of a hold through the IRS, contact your financial institution.
Three weeks after you have mailed your amended return you can
track it by visiting the following link: Where is my Amended
Return or by
calling the toll-free telephone number 866-464-2050.