Social Security Tax Fairness Act

Social Security Tax Fairness Act This bill amends the Internal Revenue Code, with respect to the taxation of Social Security benefits, to: (1) increase the income thresholds above which Social Security benefits are subject to certain taxes, (2) require the income thresholds for joint returns to be twice the amounts in effect for other taxpayers, and (3) require the thresholds to be adjusted for inflation after 2018.