1099-B PROCEEDS FROM BROKER AND BARTER EXCHANGE TRANSACTIONS

[PSG2020]

Hello,

My employer gives an option to sell a portion of RSUs to cover for taxes. The broker has sent me this form 

1099-B PROCEEDS FROM BROKER AND BARTER EXCHANGE TRANSACTIONS with

Long Term - Noncovered Securities

Cost basis is given as NOT ON FILE since the broker sells my existing stocks to cover for taxes.

What cost basis should i use 

[RobertB4444]

The units that you are selling should use a basis equal to the value of the units on the date they vested.  That may require a little research on your part but the acquisition date should be available on the statement even if the basis is not.

@PSG2020