I filed my 2019 personal tax returns in the middle of April, 2020.  I recently accessed my tax file and noticed that my federal refund amount listed per the program was different from what I had received after e-filing my fed and state income tax returns.

In looking over things...it appeared that the amount on Line 1 of Worksheet 1 (Computation of Modified AGI) of the "Social Security Recipients Who Contribute to a Traditional IRA Worksheet" was different from the amount shown on the tax return schedules that I had printed out when I e-filed my tax returns.  Has anyone else had a similar situation?

Is this a program error that has not been reported?

The bottom line is that the amount of my taxable SS is substantially understated per the current program parameters.

I hope someone can shed some light on this that makes sense to me.