Turbotax claims it will allow you up to 10k stock transactions, in reality even if you manage to import or type it in yourself, you are going to run into a large return file size problem which will not be easy to resolve if you especially have a lot of wash sales. Ideally if you successfully imported your 4 or 5k transactions, it would have calculated the proceeds, cost basis , adjustment/wash sales. Only way you will be able to solve that is by breaking that summarized calculation from the import into 30 or so equal halves and type it in manually and delete the previous large import.This was done with a help of tax expert so make sure you at least have turbotax live if you chose premier package.
Or if you don't have wash sales, you can just enter a summary of those sales.
so that was the only solution as neither online or desktop products of turbotax was able to handle almost 5k of transactions. Desktop version used to crash, don't even try to attempt the manual route of entering it. Desktop version will crash almost every single attempt after 2115 transactions and calculations can get messed up.
