The question asked by markncgolf refers to a distribution from an inherited Roth IRA since a distribution from a Roth IRA of which markncgolf was the participant would have code J to indicate that markncgolf was under age 59½. For a distribution from an inherited Roth IRA the beneficiary must separately calculation the taxable amount based on the year for which the decedent first made a Roth IRA contribution that the amount of contribution basis the decedent had in Roth IRA contributions and conversions.
For a code-T distribution from a Roth IRA of which you are the participant, you must click the Continue button on the page that lists the 1099-Rs that you've entered and, when 2020 TurboTax asks, indicate that your first contribution was before 2016.
