LLC filing companies charge varying fees to register a new business. Plan on spending anywhere from $0 to around $300 for most online LLC filing services. If you work with a traditional attorney and get custom, one-on-one help, you may spend quite a bit more. The cheapest way to file your LLC paperwork is to do it yourself. There are plenty of references—online and in books—that can guide you through the process. Then you are only responsible for state filing fees. But if you value your time and want to ensure the thoroughness and accuracy of your filing, it's best to work with an LLC filing company. Their sole purpose is to assist business owners in forming LLCs, and they can do it at a fraction of the cost of an attorney. The best LLC filing companies have in-house expertise, are fluent in every state's laws, and can process the paperwork quickly.