This problem has been around long enough for Turbotax to have corrected it. If one places the Maryland Retirement Agency Pick-Up Contribution amount on Line 17 of Turbotax, it is incorrectly credited as a full Maryland tax payment, not a reduction in the taxable amount. If one places the amount on Line 19 of Turbotax, there is no deduction - no reduction in my MD taxes due. So there seems to be no discernable reason for entry in either lines 17 or 19 because the numbers are not populated into line "r" of Maryland Form 502SU.
Turbotax screwed up MD taxes a few years ago, in the wake of the new GOP tax code, and they don’t seem to care enough to prevent Maryland retirees from paying MD taxes twice on the same money.
