In my tax summary it says I should be getting a federal refund but when I process through to the end it is saying I owe federal taxes. Why the discrepancy?

[kealyrode]

I'm filing an amendment as I forgot to include a W2 in the original return.

[Vanessa A]

If you are filing an amended return, the amount in your summary is likely your original amount you were getting back.  When you added additional income, you increased your tax liability, so you likely received more back than you should have.  When this happens, the amount due also includes paying back what you originally received that you shouldn't have received.  

The amount on your form 1040 will still match the refund you saw in the summary, but then the other amount is likely what you will see on the 1040X.