You have a couple of options. One is to switch to using TurboTax Premier Desktop (CD/Download) software. I'm sharing a TurboTax FAQ that "should" say that the Desktop software will allow for import of up to 10,000 transactions. (The first point attributes this same # to the Online platform, but that is incorrect. I believe TT Online can handle up to 2,000 transactions. I've asked this to be corrected.) The FAQ also explains how to enter summaries in lieu of individual transactions if you wish to stick with TurboTax Online.
How do I enter a large number of stock transactions in TurboTax Online?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
