TurboTax will not allow me to fill out form 8949, claiming it will be done for me. However, I had to abandon a worthless security and Vanguard does not issue tax forms.

[thetaxinator]

Vanguard will not report this to the IRS, nor provide any data on abandoned shares. I saved all the documentation, assuming that TurboTax will allow me to fill out form 8949 to declare the loss and get the appropriate deduction.

[fanfare · Accepted solution]

You cannot access Form 8949 directly,

look for entry of Form 1099-B, even if you don't have one from your broker.

@thetaxinator 

[thetaxinator]

@fanfare , thank you for the response. That's actually what I just ended up doing. I just added another sale to the brokerage account 1099-B that I had already imported from Vanguard. I was able to label it as (no 1099-B provided) and mark a checkbox "worthless shares" - hopefully that did the trick. Will TurboTax generate form 8949 for me?

[fanfare]

Yes.