Banking Since it's required to keep your business finances separate from your personal finances, you'll need a business checking account. Banks usually charge a number of different fees and monthly expenses for these types of accounts. Also, If a check is made out to your LLC, then it is required to be deposited into a business bank account and cannot just be cashed. And some banks might charge extra for this type of deposit.
In a few states, you must take an additional step to make your company official: You must publish a simple notice in a local newspaper, stating that you intend to form an LLC. You are required to publish the notice several times over a period of weeks and then submit an "affidavit of publication" to the LLC filing office. Your local newspaper should be able to help you with this filing.
Filing a limited liability company separates your personal assets from those of your business. This prevents you from being financially responsible for debts and liabilities of your business. Even though members are still liable, that liability is limited to the extent of their investments in the business. If, for instance, your company is involved in a lawsuit, the assets of the LLC itself could be in jeopardy, while the personal assets of the members/owners would be protected.