You are correct, the Federal percentage floor on medical deductions was to be raised to 10%, but that change was delayed for 2019. I read an outdated article on the web. My bad!
The conclusion we reached (I too spent much time with a TurboTax consultant - whew!) is that GA requires you to have medical expenses greater than 10% of your adjusted gross income ... so they add back 2.5% to your adjusted gross income (in effect taking away 2.5% of the deduction allowed on your Federal return). A bit counter intuitive. My taxable income in GA *increased* because my medical deductions were *reduced*.
No where can we find where the GA percentage floor on medical deductions is actually 10% (I spent way too much time on the web and on the phone and essentially gave up!), but because the adjustment added to the income GA was 2.5% we assumed this was the reason.
