"if you did not pay Federal Tax on your Social Security benefit you will have to pay taxes on your benefit in Ohio in 2019"
That's not correct. Ohio, like most states starts with the Federal Adjusted Gross Income (AGI). Then it has additions and subtractions (deductions) to that income. Additions are shown on lines 1 thru 9 of Schedule A. Note that there is no line to add back untaxed (federally) social security income. Deductions are shown on lines 11 thru 34. Note that the amount of social security, taxed on the federal return, is deducted on line 14. So, no part of social security income is taxed by Ohio.
