You need to use Premier to enter information from a K-1 if you want to use an online version. You can use any desktop version, including Deluxe.
However, if you have a single-member LLC without an election to be treated as a corporation for federal income tax purposes, then you should not have a K-1 for that LLC; it is treated the same as if you have a sole proprietorship and the income and expenses are reported on Schedule C of your 1040.
