If the business is not an ongoing business activity (you are not recruiting customers, you are not performing work) then you have "startup expenses." (But, if you are "open for business" -- recruiting clients and performing work-- then you would file a return with your expenses even if you have not received any revenue yet.)
Your startup expenses are saved and reported on the business return for the first year that the business has ongoing business activity. The startup costs can be deducted in the first year, or can be spread out over 15 years, according to a formula that I don't know but is built in to Turbotax. Note that this only applies to expenses, your startup costs that are assets are listed as assets and depreciated in the usual way for assets.
Also note that in most cases, an LLC with more than one member must file using Turbotax Business, which is a different program from the personal tax program. The business return issues a 1099-K to each member that is reported on the member's personal return.
