Direct answer
LLC formation cost depends primarily on the state. The U.S. Small Business Administration notes that business-registration costs are often under $300, but filing fees, registered-agent costs, annual reports, franchise taxes and optional professional services vary by state and business structure.
The state filing fee is only the starting point
Each state sets its own LLC formation fee and filing process. Some states also require initial reports, publication, franchise taxes or other charges that are separate from the basic Articles of Organization filing.
Registered-agent costs can be separate
LLCs generally need a registered agent in the formation state. You may serve as your own agent if state rules allow and you meet the requirements, or you may pay a commercial registered-agent service.
Look beyond the formation day
Ongoing costs can include annual or biennial reports, state fees, business licenses, tax registrations and foreign qualification if the company later does business in another state.
What to ask before buying an LLC package
Ask which state fee is included, whether registered-agent service renews automatically, whether EIN assistance is optional, which documents you receive, and which ongoing compliance tasks remain your responsibility.