The easiest way to find your 2017 AGI is to visit the IRS website linked below to obtain a transcript of your 2017 tax return. You'll find your 2017 AGI on this transcript.
https://www.irs.gov/individuals/get-transcript
Once you've found the correct AGI as per the IRS, you can follow the instructions below to correct the wrong AGI and complete your e-filing.
https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/01/26311
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*** 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.***
