There is no federal deduction for making a contribution to a 529 plan. Some states allow a deduction on the state return. If your state is one, it will come up in the state interview; usually in the "Here's how (your state) handles income differently" section.
For a state list of eligible plans, see: https://www.savingforcollege.com/529-plan-details
http://www.savingforcollege.com/compare_529_plans/index.php?page=compare_plan_questions&plan_questio...
