TurboTax does not support losses from fraudulent investment arrangements, including so-called Ponzi schemes. See the attached screenshot from the program.
Here is some information on how those types of losses are treated:
You are allowed to claim an Itemized Deduction for Theft Loss in
Schedule A. Since you were the victim of a Ponzi Scheme this theft loss
is not limited to the $100.00 floor or 10%-of-AGI limits and it can
create a Net Operating Loss. You have two options:
- The IRS has provided safe harbor rules for computing losses from
Ponzi-type schemes. The rules allow a deduction of 95% (75% for
taxpayers suing third parties) of the net investment, less any actual
recovery and potential insurance recovery (Rev. Proc. 2009- 20).
Taxpayers using the safe harbor complete Section C of Form 4684.
Appendix A of Rev. Proc. 2009-20 is not required.
- Taxpayers who cannot or choose not to use the safe harbor rules
may claim a loss in the year the theft is discovered or amend returns
for open years to recalculate income for those years by removing phantom
income (Rev. Rul. 2009-9; PMTA 2013-003). Losses within IRAs are
limited to the taxpayer’s basis in the IRA and are deductible after the
distribution of his entire interest in the IRA. (INFO 2010-0234)
Regardless of how you choose to report the loss, you must do so through Schedule A. Unfortunately TurboTax does not have the forms necessary to deduct a Theft Loss from a Fraudulent Investment Transaction. We recommend that you visit a local Tax Professional to handle your situation.