The Operating Agreement for Your Washington LLC

An operating agreement is a written contract among the members of an LLC that governs how the company is owned and run. It is the LLC's equivalent of a corporation's bylaws and shareholder agreement rolled into one, tailored to the flexibility that LLCs allow.

In Washington, the operating agreement is a private document. You do not file it with the Secretary of State, it does not appear in CCFS, and no state agency reviews it. It lives with the members and the company. That privacy is a feature — your ownership splits, buyout terms, and profit arrangements stay out of the public record.

Washington's LLC Act, Chapter 25.15 RCW, expressly recognizes operating agreements and gives members broad freedom to arrange their affairs by agreement. Where the members have not agreed on something, the statute's default rules fill the gap. That is the heart of why the agreement matters: without one, you are living under defaults you never chose.

Because Washington does not require an operating agreement, some owners skip it — especially single-member LLCs. That is a mistake for a few concrete reasons.

It protects your liability shield

For a single-member LLC, the operating agreement is evidence that the business is a genuine, separate entity rather than an extension of you personally. When someone tries to pierce the veil and reach your personal assets, courts look at whether the LLC was treated as a real, distinct company. A signed operating agreement is one of the markers of that separation.

It prevents disputes in multi-member LLCs

When two or more people own a business, disagreements are not a matter of if but when. The operating agreement is where you decide, in advance and calmly, how profits are split, how decisions are made, what a deadlock triggers, and how someone exits. Deciding these things up front, before there is money or conflict on the table, is far easier than fighting about them later.

It overrides defaults you may not want

Without an operating agreement, the default rules in Chapter 25.15 RCW govern everything. Those defaults might allocate profits or voting differently than you intend, or handle a member's departure in a way that surprises you. The agreement lets you replace the defaults with terms that actually fit your business.

Banks and partners expect it

Many banks ask to see an operating agreement when you open a business account, and investors, lenders, and serious partners often want to review it. Not having one can slow down real transactions.

A thorough operating agreement addresses the full lifecycle of the LLC. The core sections most Washington LLCs should include:

Ownership and capital

• Members and ownership percentages. Who owns the LLC and in what proportions (often expressed as membership interests or units).
• Capital contributions. What each member contributed at formation — cash, property, or services — and whether future contributions can be required.

Money

• Profit and loss allocation. How profits and losses are divided among members. This often matches ownership percentages but does not have to.
• Distributions. When and how cash is actually paid out to members, and in what priority.

Management and decisions

• Management structure. Whether the LLC is member-managed (all members share running the company) or manager-managed (designated managers run it while other members may be passive). Washington allows both.
• Voting rights. How votes are weighted — by ownership percentage, per member, or otherwise — and which decisions require a supermajority or unanimity.
• Authority. What day-to-day authority managers or managing members have, and what requires a full member vote.

Change and exit

• Transfer restrictions. What happens when a member wants to sell or transfer their interest — rights of first refusal, approval requirements, and any buy-sell terms.
• Admission of new members. How new members can be added and on what terms.
• Death, disability, or withdrawal. What happens to a member's interest in these events, and how it is valued and bought out.
• Dissolution. The circumstances under which the LLC winds up and how remaining assets are distributed.

One of the most important choices the operating agreement records is your management structure, and it also appears in how you set up the LLC.

Member-managed

In a member-managed LLC, all the members participate in running the business and generally have authority to act on the company's behalf. This is the common choice for small LLCs where the owners are also the operators — a few partners who all work in the business day to day.

Manager-managed

In a manager-managed LLC, the members appoint one or more managers to run the company, while other members can be passive investors without day-to-day authority. This structure fits LLCs with outside investors, silent partners, or a larger group where centralizing decisions makes sense.

The operating agreement is where you define which structure applies and spell out the managers' powers and limits. Getting this right avoids confusion about who can sign contracts, bind the company, and make decisions — a frequent source of conflict when it is left vague.

An operating agreement is only useful if it actually fits your business and stays current.

Make it specific to your LLC

A generic template is a starting point, not a finished agreement. Fill-in-the-blank forms often leave the most important decisions — buyout terms, deadlock resolution, profit splits — on their defaults, which defeats much of the purpose. For a single-member LLC, a solid template may be enough. For a multi-member LLC, or any LLC with meaningful assets or outside money, having an attorney draft or review the agreement is money well spent.

Get it signed and keep it

All members should sign the agreement, and each should keep a copy. Store the executed agreement with your other key documents — the Certificate of Formation, EIN confirmation, and UBI records.

Update it when things change

Amend the agreement when ownership changes, a member joins or leaves, or the way you run the company shifts. An operating agreement that no longer matches reality can be as problematic as not having one.

Where Mainstay Filing fits

Mainstay Filing handles the state-facing formation of your Washington LLC — preparing and filing the Certificate of Formation and providing registered agent service. The operating agreement itself is a legal document about the internal arrangements among members, so for anything beyond a straightforward single-member setup, an attorney is the right resource to draft or review it. What we make sure of is that the entity behind your operating agreement is properly formed and in good standing with the state.