In which state? If you are talking about a state return, walk through all the questions in the state to the part that asks about your 1099-R income and answer based on your situation.
For federal purposes, Pension and Retirement Income is taxable. Whether it is fully taxable or partially taxable depends on if you contributed to it with after tax or before tax money. If it is after tax money, then your basis in the plan is not taxable. If it is before tax money, the entire amount is taxable.
Did you do a roll-over, if so, you will simply need to answer the questions in TurboTax stating that you did a Roll-Over and then it will remove the roll-over amount from your taxable income. For most issues, walking through ALL of the questions after you enter your 1099-R will remove any part that is not taxable.
If there is another situation, please elaborate.
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