My income is over the MAGI limit for deductible contributions to a Traditional IRA. When TurboTax asks "Any Nondeductible Contributions to Your IRA?" is the answer Yes?

[pher]

Normally the term "nondeductible contributions" refers to after-tax contributions, which I did not do. This was simply a contribution to Traditional IRA (which is technically not deductible) but for the purpose of converting via Backdoor Roth IRA.

I don't know if this is bad phrasing by TurboTax and they meant after-tax contributions, or if I actually should be answering "Yes" here.

[dmertz]

TurboTax is asking if you have any basis in nondeductible contributions carried into 2018 from 2017.  TurboTax will separately automatically pick up any basis resulting from contributions made for 2018.