Thank you for your reply with the additional information, however my entry into line 2a is 0 and none of the exceptions listed in the 1040 instructions on page 30 apply to me. I would like to refer you, via this link, to the IRS.gov "Interactive Tax Assistant (ITA)": https://www.irs.gov/help/ita. Under Retirement: Pensions, IRAs, Social Security" Click on the 1st line "Are my Social Security or railroad retirement tier 1 benefits taxable" and enter the numbers from your TurboTax generated form 1040 in the interactive form as requested and view the taxable amount the IRS shows. In my case it is almost double the amount calculated by TurboTax. This by the entity whose algorithm is going to compare their number to my electronically submitted line 6b. I still see a problem.
