Operating Agreement vs Bylaws: What Is the Difference?
New business owners run into these two terms constantly and assume they are interchangeable. They are not. An operating agreement and bylaws do similar jobs, but they belong to different business entities, follow different rules, and get created in different ways.
Mix them up and you will either draft the wrong document or show up at the bank with paperwork that does not match your entity type. Here is the clear breakdown.
The One-Sentence Difference
An operating agreement is the internal governing document of an LLC. Bylaws are the internal governing document of a corporation. That is the core distinction, and everything else flows from it.
If you formed an LLC, you need an operating agreement. If you formed a corporation, you need bylaws. You do not need both, and drafting the wrong one for your entity type creates confusion without adding protection.
What Each Document Covers
Both documents serve as the rulebook for how the business runs internally. But their contents reflect the different structures of LLCs and corporations.
Operating agreements
An operating agreement covers the members (owners) of the LLC: who they are, what percentage each owns, what they contributed, and how profits and losses are split. It defines whether the LLC is member-managed or manager-managed, sets voting thresholds, and lays out how members join, leave, or get bought out.
Operating agreements are famously flexible. LLC statutes give members wide latitude to customize economic arrangements, voting rights, and management structures. Two LLCs in the same state can have radically different agreements, and both are perfectly valid.
Bylaws
Bylaws cover the corporation’s governance machinery: the board of directors, officers, shareholder meetings, voting procedures, and how shares are issued and transferred. They establish the formal hierarchy that separates ownership (shareholders) from management (directors and officers).
Bylaws are more rigid by nature. They must comply with the state’s corporate code, which prescribes many of the rules around meetings, quorums, and director duties. There is less room to improvise than with an LLC operating agreement.
For how the operating agreement relates to your other LLC paperwork, see operating agreement vs articles of organization.
Key Differences Side by Side
Here is how the two documents compare on the points that matter most.
Which entity uses it
Operating agreements are for LLCs. Bylaws are for corporations, including C corps, S corps, and nonprofits. An LLC taxed as an S corp still uses an operating agreement, because its legal entity type has not changed. Tax election does not change your governing document.
Who signs
Every member of the LLC typically signs the operating agreement, which makes it a binding contract among all the owners. Bylaws are adopted by the board of directors and usually signed by an officer or the directors. Shareholders do not necessarily sign the bylaws, because shareholders come and go while the bylaws persist.
Who is bound
This is a subtle but important difference. An operating agreement directly binds the members who signed it. Bylaws bind the corporation as an entity and govern how its directors, officers, and shareholders interact, but individual shareholders are generally not personal parties to the bylaws the way LLC members are parties to the agreement.
Flexibility
Operating agreements win on flexibility. LLC law is designed to let members structure their deal almost any way they want. Corporate law is more prescriptive, and bylaws must stay within what the corporate statute allows. That is why creative profit splits and custom governance are easy in LLCs and awkward in corporations.
State requirements
Only five states require LLCs to have an operating agreement: California, Delaware, Maine, Missouri, and New York. In the other 45, it is optional but strongly recommended. Corporate bylaws face stricter expectations, with most states requiring corporations to adopt them. Neither document is typically filed with the state. Both are kept internally.
Which One Do You Need?
The answer follows your entity choice. Formed an LLC? Draft an operating agreement. Formed a corporation? Adopt bylaws. Still deciding between entity types? Our LLC vs S corp comparison walks through the tradeoffs that should drive the decision.
One common point of confusion: some LLC owners who hear “bylaws” in a corporate context wonder if they need both documents. You do not. Your operating agreement already does the job that bylaws do for corporations. Adding bylaws to an LLC just creates a second document that can contradict the first.
Similarly, corporations do not need operating agreements. If someone tells you your new corporation needs one, they are mixing up the terminology. What you need is a solid set of bylaws plus, in many cases, a shareholder agreement for the ownership-level details.
Do Lenders and Banks Care Which You Have?
Yes. Banks, lenders, and investors ask for the governing document that matches your entity type. An LLC showing up with bylaws, or a corporation showing up with an operating agreement, raises immediate questions about whether the owners understand their own structure. Bring the right document. If you are unsure what your bank expects, our guide for single-member LLCs covers the most common scenario.
LLCs run on operating agreements, corporations run on bylaws, and the right document is whichever one matches your entity.
Myths Worth Dropping
Myth one: “My LLC needs bylaws too.” No. Your operating agreement already does the job. A second governance document only creates contradictions for a court to sort through later.
Myth two: “Bylaws get filed with the state.” They do not, in nearly every state. Like operating agreements, bylaws are internal. The confusion comes from mixing them up with the articles of incorporation, which are the public filing.
Myth three: “A single-shareholder corporation does not need bylaws.” It still should adopt them. Banks, investors, and courts expect the formalities to be observed regardless of size. Skipping them because “it is just me” is how small corporations end up looking like sole proprietorships in a lawsuit.
Myth four: “The documents are basically the same, so the name does not matter.” The name signals the entity type to everyone who reads it. Using the wrong label on your governance document tells banks and counterparties that the owners are confused about their own company. Get the label right.
When in doubt, match the document to the entity on your formation certificate. LLC on the certificate means an operating agreement on your shelf. Corporation on the certificate means bylaws. Simple as that.
Watch: Operating Your LLC or Corporation Correctly
This video covers the essentials of running your entity correctly, including why having the right governing document, whether an operating agreement or bylaws, is non-negotiable.
Frequently Asked Questions
Can an LLC have bylaws instead of an operating agreement?
Technically an LLC could adopt a document called “bylaws,” but it would be unusual and confusing. Courts, banks, and agencies expect LLCs to have operating agreements. Use the standard document for your entity type.
Can a corporation have an operating agreement?
Not as its governing document. Corporations use bylaws. A corporation might have an “operating agreement” as a nickname for some other internal contract, but its formal governance document is the bylaws, supplemented by shareholder agreements where needed.
Are either of these filed with the state?
Generally no. Both are internal documents kept with your business records. The public filing is the articles of organization (LLC) or articles of incorporation (corporation). Do not confuse the internal rulebook with the public charter.
What happens if a corporation never adopts bylaws?
The corporation still exists, but it operates under the default rules of the state corporate code, which may not suit the owners. Many states legally require bylaws, and banks and investors will ask for them. Adopt them promptly even if you skipped the step at formation.
Which is easier to amend?
Operating agreements are typically easier to amend, often requiring a member vote under flexible procedures the members chose themselves. Amending bylaws usually requires a formal board or shareholder vote following statutory procedures. Both should spell out their own amendment process.
The SBA’s business structure guide explains how entity choice determines your governing document. The IRS business structures page covers the tax side of the LLC-versus-corporation decision.
