A Washington single-member LLC operating agreement helps establish the internal structure and regulations of a limited liability company that has only one (1) member. While there may be no need to outline relationships between members, a single-member LLC should have this written document in place to outline important provisions that relate specifically to the entity. Without an operating agreement in place, the company will be regulated by the state statutes pertaining to limited liability companies, which can be broad and impertinent to some businesses.

Important terms often found in a single-member LLC operating agreement are the function of the company, ownership rights (which are relatively simple as there is only one owner/member), management type, contributions and distributions, and accounting/tax matters.