Why does ETrade keep making my cost basis $0 and using the adjustment column instead? (when filling 1099B?) It happens even if I put my own cost basis. Thanks.

[GiseleD]

Did you upload your 1099-B? If so, and if this issue keeps presenting, you may need to delete the uploaded 1099-B and enter it manually. 

[fanfare]

Does it matter?

As long as the gain or loss is reported correctly, go with your broker's numbers.

This is what is reported to the IRS.

[Anonymous]

while it may not matter if you are concerned contact e*trade to find out.  there may be a problem in the way they set up the export.    the simplest way to tell is to go to your e*trade a/c and look at the actual 1099-B if it actually shows the adjustments - go with it.   if not you MAY have a problem because what e*trade sends the IRS won't match your reporting.  I  would think this would only happen if you transferred items into the account so e*trade can't verify your cost basis.  but this is only a guess.