It
could be due to an IRS or state refund offset. A refund offset is when a refund is reduced
or intercepted to pay off delinquent debt. If
it is due to an offset you will receive a letter in the mail that
will explain the reason.
https://ttlc.intuit.com/replies/3288510
Also, sometimes changes are made by the IRS or State Department of Revenue to your tax return.
You
may also contact your state (expect a long wait time):
https://ttlc.intuit.com/replies/3302452