Is your Single Member LLC set up as a S corp? If not then it is a disregarded entity and you file it on Schedule C in your personal 1040 tax return. So you will need to amend your return to add it.
If you are a S corp you need to buy the Windows Desktop Business program. You can buy the stand alone do it yourself Business Download program for Windows here (it is not available to do online or for Mac).
https://turbotax.intuit.com/small-business-taxes/cd-download
There is also a Business service, LIVE Assisted or LIVE Full Service Business which is separate from the Desktop installed Business program. It is not for 1041 Trust/Estate returns. You can see them here,
https://turbotax.intuit.com/small-business-taxes
What are you referring to as your business taxes and business account? Are you self-employed as a sole proprietor? Or do you have a S-corps, C-corps or multi-member partnership?
When I manage my Intuit account, I have a Profile (personal) and a Business Profile (sole proprietor LLC). When using my Intuit credentials to log into TurboTax, it prompts me to select a profile. When I select my Business Profile, it navigates me to my personal taxes. Why? How can I begin my LLC taxes?
Is your Single Member LLC set up as a S corp? If not then it is a disregarded entity and you file it on Schedule C in your personal 1040 tax return. So you will need to amend your return to add it.
If you are a S corp you need to buy the Windows Desktop Business program. You can buy the stand alone do it yourself Business Download program for Windows here (it is not available to do online or for Mac).
https://turbotax.intuit.com/small-business-taxes/cd-download
There is also a Business service, LIVE Assisted or LIVE Full Service Business which is separate from the Desktop installed Business program. It is not for 1041 Trust/Estate returns. You can see them here,
https://turbotax.intuit.com/small-business-taxes