Every US company needs a governing document, whether it is an LLC or a C-Corp. This guide explains what an operating agreement and bylaws actually do, how single-member and multi-member LLCs differ, and why banks and partners will ask to see this paper before they work with you.
What an operating agreement is
An operating agreement is the internal rulebook for an LLC. It sets out who owns the company, how much of it they own, how profits and losses get split, and how decisions get made. Most states do not require you to file this document with the state, but almost every bank, payment processor, and serious business partner will ask for a copy before they open an account or sign a contract with you.
If you do not have one, your LLC defaults to your state's standard rules for LLCs. Those default rules are generic and were not written with your business in mind. They may split profits in ways you did not intend, or leave gaps in what happens if a member wants to leave.
What bylaws are
Bylaws serve the same purpose for a C-Corporation. They describe how the board of directors operates, how officers are appointed, when shareholder meetings happen, and how voting works. A corporation almost always issues shares to its owners too, which means you need a stock ledger and share certificates alongside the bylaws.
Bylaws and an operating agreement are not interchangeable. An LLC does not have bylaws or shares, it has an operating agreement and membership interests. A C-Corp does not have an operating agreement, it has bylaws and shares. If you form the wrong entity type for your plans, this becomes a problem later, so it is worth getting the entity choice right at formation.
Operating agreement vs bylaws at a glance
| LLC operating agreement | C-Corp bylaws | |
|---|---|---|
| Governs | Members and their ownership interests | Board, officers, and shareholders |
| Ownership unit | Membership interest or percentage | Shares of stock |
| Filed with the state | No, kept internally | No, kept internally |
| Needed to open a bank account | Usually yes | Usually yes, alongside board resolutions |
| Covers profit and loss splits | Yes | Not directly, profits flow through dividends |
| Covers voting and control | Yes | Yes |
Single-member vs multi-member LLCs
A single-member LLC has one owner. The operating agreement is shorter, but it still matters. It confirms that the LLC is a separate legal entity from you personally, which protects your personal assets if the business is ever sued. Banks also use it to confirm you are the sole authorized person on the account.
A multi-member LLC has two or more owners, and the operating agreement carries a lot more weight. This is where disputes get prevented before they start. You want clear answers to questions like: what happens if a member wants to sell their stake, what happens if a member stops contributing, who has the final say on major decisions, and how are profits split if contributions were unequal. Skipping these details in a multi-member LLC is one of the most common causes of founder disputes later on.
Why banks ask for it
Banks such as Mercury, Wise Business, and Relay use your operating agreement or bylaws to confirm two things: that the company is legally formed and organized, and that the person opening the account actually has the authority to do so. If your operating agreement names you as the sole managing member, that settles the question quickly. If it is missing, outdated, or does not match who is actually running the company, expect delays or a request for more paperwork. This is true whether you are a US resident or a founder applying from outside the US, and approval is always the bank's own decision, not something PowerLaunch or any formation service can guarantee.
Clauses that actually matter
Not every clause in a template matters equally. Focus on getting these right:
- Ownership percentages and how they were calculated
- Management structure, meaning member-managed versus manager-managed for an LLC, or the board structure for a corporation
- Voting thresholds for major decisions, such as taking on debt or adding a new owner
- What happens if an owner wants to leave, sell their stake, or passes away
- How profits and losses are allocated and when distributions happen
- Dispute resolution, so disagreements have a clear process instead of going straight to court
Generic templates you find online often skip several of these, especially the exit and dispute clauses. That is usually fine for a single-member LLC with simple plans, but it is a real risk for any company with more than one owner.
How PowerLaunch handles this
Every PowerLaunch plan, from Launch through Scale, includes drafting your operating agreement or bylaws as part of the formation package. You do not need to source a template separately or pay an extra fee for this document. It is prepared alongside your EIN application and registered agent setup, so it is ready when your bank introduction happens. If a formation error on PowerLaunch's side affects this document, PowerLaunch corrects it at its own cost and refunds that portion of the fee, though state filing fees are never refundable.
For multi-member LLCs or founders with a specific ownership structure in mind, it is worth reviewing the clauses above in detail before your documents are finalized, so the agreement actually reflects how you plan to run the business.
What to do next
If you are ready to form your LLC or C-Corp with a proper operating agreement or bylaws included from day one, start at powerlaunch.solutions/signup. If you want to talk through a multi-member structure, ownership split, or which entity type fits your plans, book a free 20-minute consultation at powerlaunch.solutions/book before you file.
