@kphamtax1 The instructions for entering your 2018 refund that you applied to your 2019 tax return are included in the TurboTax FAQ below. You may not have access to the actual forms (as shown in @LeonardS 's response). Hope this helps!
How do I get credit for a refund applied to this year's taxes?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
