I want to manually add my 529 contributions. Where do I input that data?

[Hal_Al]

For most people, you don't enter it, at all.  There is no federal deduction for making a contribution to a 529 plan, so there is no place in the TurboTax (TT) Federal program, or IRS forms,  to enter it.  TT will not be tracking your contributions.

 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.  If you state allows a carryforward, the TT state program will track that.  For more specific advice, identify your state. 

 For a state list of eligible plans, see: https://www.savingforcollege.com/article/how-much-is-your-state-s-529-plan-tax-deduction-really-wort...

[popebk]

Everything stated above is true. However, my state is listed as one that does 529 deductions. I called the help number and found that deductions for 529 deductions could actually be found under the state income section.