I don't believe that you even need the wealthfront calculator. You can just do this in Excel.
1. Find the Cost Basis Factor for each of these ridiculous, nonsensical, lousy GBTC transactions in your 1099-B that apparently occur every week you hold this pile of junk.
2. Begrudgingly calculate your total investment in GBTC in dollars up to the date of the Undetermined Uncovered Useless transaction (add up the total $ you used to buy the GBTC up to this date while swearing under your breath).
3. Then multiply this amount by the Cost Basis Factor in the 1099-B to get your cost basis for that individual transaction and then tediously put that into each stupid "sale" entry that Turbotax is asking for extra info (cost basis field highlighted with red borders).
Finally, remember never to buy GBTC/ETHE or any of that sort of crap again! (Also, avoid any Proshares ETF which all generate vast K-1s and K-3s that will drive you insane).
