After you file

I guess the key part of my question is:   Can I view my AGI before I PAY for turbotax.    I have not found a way to see that info.    I am about done with my return but I would like to see if I can make a full or partial contribution to my Roth IRA.    I guess I could just plug in some numbers and see if TurboTax flags me that I have over contributed.... OR, If I could just see my AGI then I could figure out  how much I can contribute to the penny.