Enter your Railroad Retirement Tier 1 amounts in box 14 of the W-2. Do not enter it box 4 for Social Security withholdings. In box 14, enter the description, amount, and select the category drop down then scroll to Railroad Retirement Tier 1. Additionally, you will need to enter in box 14 the Railroad Retirement compensation amount from box 1 of the W2 so the overpayment is not reported. Select "Railroad Retirement Compensation" from the box 14 category.
Click here for more information on entering Railroad Retirement information in TurboTax
Railroad retirement is exempt for state income taxes.
