Even online companies are starting to take on LLC form in order to benefit from the limited liabilities and tax breaks allowed these kinds of companies in many states. An online llc is a limited liability company that is based online. It could also refer to LLCs that have been registered online. These companies often provide very attractive investment opportunities due to their inherent structure, which limits liabilities only up to the extent of a given contribution in capital, which makes these kind of companies quite desirable alternative investment vehicles.