I want to file online I want to do it myself I used turbo tax desktop last 3 years I need the version to handle k-1 forms How do I do all of the above and what is cost?

[DoninGA]

Only the Premium online editions supports the entry of a Schedule K-1 - https://turbotax.intuit.com/personal-taxes/online/premium/

[VolvoGirl]

FYI - 

If you used the Desktop program last year here’s How to transfer into the Online version, expand the blue link if you used the CD/download last year

https://ttlc.intuit.com/community/entering-importing/help/how-do-i-transfer-last-year-s-return-into-...

If you used the Desktop program before you may notice several differences and not like the online version.  It has less features and no Forms Mode.  You can only do 1 return per account.    Your return is only saved online so be sure to save both the .tax2025 data file and the pdf file to your computer when you are done.  In case you need to amend in the future or if you need a copy to get a loan or something.  You might not be able to access your online return when you need a copy.