Q. Can I change the form?
A. No. There is a procedure for this. Enter the 1099-B exactly as received. A couple of screens later will be "Select any less common adjustments that apply".
Check "The cost basis on my statement is incorrect".
You will be given a box to enter the correct cost basis.
TurboTax puts code "B" in column (f) of form 8949 and the basis adjustment in column (g).
