If you are referring to a federal refund received less than you expected:
TurboTax does not have access to IRS refund
adjustment information.
However, you can expect a
letter of explanation from the IRS
within 30 days or so.
In the below link, you can see some of the
more common reasons for a downward adjustment in a refund in addition to math
and data entry errors.
Why is my federal refund less than I expected?
