Generally, your refund will be a lump sum.
Since TurboTax has no way of knowing why the IRS reduced your refund (if your $480 is your refund), you will receive a letter of explanation from the IRS within 30 days or so.
It is possible that the reduction could have been due to a refund offset to pay a debt such as an outstanding student loan, past due state taxes, or past due child support-or perhaps a simple calculation error.
