Get your taxes done using TurboTax

Make sure that you have not entered this as an IRA contribution.  A 401(k) is not an IRA.  Enter amounts shown in box 12 of your W-2 only in box 12 of TurboTax's W-2 form, nowhere else in TurboTax.  If you have entered any of the $30,500 as an IRA contribution, go back and remove that.