This official answer still sounds ridiculous. If every number (proceeds and cost) in a single transaction is rounded, as Turbo Tax is doing this year, there is certainly no need to round after addition or subtraction. Turbo Tax needs to go back to doing the calculations as has been done in previous years. Turbo Tax numbers need to match those in brokerage statements as in previous years. This is a computer program that should be able to handle many dollar and cent transactions in fractions of a second.
