When it is asking for how much of my Box 12 retirement contributions went to a SIMPLE Roth IRA plan, is it asking for the pre or post tax contributions?

[dmertz · Accepted solution]

Sort of, but it's asking about the type of account to which the contributions were made.  Contributions to a traditional SIMPLE IRA can only be pre-tax contributions while contributions to a SIMPLE Roth IRA can only be after-tax contributions.  Because both are reported the same way on your W-2 as if they were pre-tax, TurboTax needs to know if the contribution was actually to a SIMPLE Roth IRA so that it can be added back to your taxable income.

If you don't know if your SIMPLE account is traditional or Roth, check your year-end statement or ask the IRA custodian.