An LLC can choose to be treated for tax purposes as either a partnership or as a corporation. This is done by electing how to be taxed. Unlike a partnership, a single member LLC is allowed (except in states that require at least two members). If the LLC chooses to be taxed as a partnership, its tax advantages and disadvantages will be the same as those of a partnership.
Similarly, if it chooses to be taxed as a corporation, it will have the same advantages and disadvantages as a corporation. Single member LLCs are treated as sole proprietorships for tax purposes.