Have you considered using a free service to track your crypto transactions? These services allow connecting your wallets to track input and output coin movements to establish a cost basis. There are also YouTube videos showing how to fix transactions missing cost basis. These web services show the tax impact for each year since you started your crypto journey. A Google search on a free crypto ledger or tracker might give you some light. Just be aware of scammers before start using any of them. And before you select one free provider check on reviews or forums.
I am using one web service which helps validate my taxes. And remember as George777 posted, “If your cryptocurrency transactions were reported to you on a Form 1099-B, you might consider informing the firm that sent you the 1099-B to amend the relevant entries.” Remember all Tax forms are reported to the IRS, including 1099-B, and it shows that you have a gain that you might not have.
