If you have a copy of your 2018 tax return or if you filed in Turbotax last year, thats your best bet. Your AGI is on the first page. You can call the IRS (look on the irs's website because they removed the number from the post) but be prepared to wait. Its tax season and there will be a que. Also, the IRS may still not give you the info. You would have to verify your identity before they release personal info regarding a taxpayer's account.