Handbook / Business structure
LLC operating agreement: what it covers, even for a single-member LLC
An LLC is created by filing with the state, but the rules for how it runs usually live in a separate document: the operating agreement. Many single-member LLC owners skip it, assuming it only matters for partners. That is a missed opportunity. A short agreement can protect your limited liability and avoid problems later.
What an operating agreement is
The SBA describes an operating agreement as a document that describes the structure of your company's financial and functional decisions. It defines how key business decisions are made, as well as each member's duties, powers and responsibilities. The SBA says it is widely recommended to create one, even if your state does not mandate it.
It is usually not filed with the state. You keep it with your formation documents.
Why it matters for a single-member LLC
- It supports separation. Limited liability depends partly on treating the LLC as a separate business. A written agreement, used alongside a separate bank account and proper records, helps show that.
- It overrides default rules. States have default rules that apply when there is no agreement. They may not suit you.
- It plans for the unexpected. Who can run or close the business if you become ill or die?
- It makes adding members easier. Terms for bringing someone in are already in place.
- Banks and partners may ask for it.
Member-managed or manager-managed
Member-managed: the owners run the business day to day. This is common for single-member and small LLCs.
Manager-managed: one or more managers, who may or may not be members, run the business, and members act more like investors.
Say which in the agreement.
Key sections to include
- Basic details: LLC name, formation date, principal address, registered agent and purpose.
- Members and ownership: who owns what percentage.
- Capital contributions: what each member put in and whether more can be required.
- Profits, losses and distributions: how and when money is paid out.
- Management and voting: who makes which decisions, and what needs unanimous approval.
- Duties and authority: who can sign contracts, open accounts or borrow.
- Records and accounting: who keeps books, the fiscal year and bank accounts.
- Adding members: how new members join and on what terms.
- Transfers and exits: whether members can sell their interest, and buyout terms.
- Death or incapacity: who takes over or has authority.
- Dissolution: how the LLC is wound up and assets distributed.
- Amendments: how the agreement can be changed.
Tax consistency
The IRS treats an LLC according to its classification: a single-member LLC is disregarded as separate from its owner by default, and a multi-member LLC is a partnership by default, unless it elects otherwise. The operating agreement does not decide your tax classification, but its terms on distributions and pay should match how the LLC is taxed. See the guides to the single-member LLC and S corp election.
Writing it
Templates are a good starting point for a single-member LLC. Read every clause and adapt it to your state and situation. For multi-member LLCs, uneven contributions, or plans to bring in investors, have a lawyer review it. Disputes between co-owners are expensive, and the agreement is the main tool for avoiding them.
Signing and storing
All members sign and date the agreement. Keep a signed copy with your articles of organization, EIN letter and state filings, plus a digital backup.
Keeping it current
Review it when:
- a member joins or leaves
- ownership percentages change
- you change management structure
- you change tax classification
- you move the business to another state
Amend it in writing, following the agreement's own amendment process.
Using it in practice
An agreement only helps if your actions match it. Keep business and personal money separate, sign contracts in the LLC's name, and record major decisions. The guide to how to form an LLC covers the other steps.
Multi-member LLCs
When two or more people own an LLC, the agreement matters even more. Spend extra time on decision-making, deadlock, buyouts and what happens if a member stops contributing work. Discuss these points openly before you sign.
Write an operating agreement even for a single-member LLC: set out ownership, management, money, decisions, exits and dissolution, keep it consistent with your tax treatment, sign and store it, and update it when things change.
Questions people ask
Do I file the operating agreement with the state?
Usually not. It is an internal document kept with your business records, though banks and others may ask to see it.
Does a single-member LLC need one?
It is often recommended. It documents separation between you and the business and plans for incapacity or adding members.
Can I write it myself?
Many owners use a template and adapt it. For multi-member LLCs or complex arrangements, a lawyer's review is worth considering.
Does the operating agreement affect taxes?
It does not decide your federal tax classification, but it should be consistent with how the LLC is taxed and how members are paid.
Do this week
- Check whether your state requires an operating agreement.
- Choose member-managed or manager-managed.
- Write down ownership, contributions and how profits are distributed.
- Add sections on decisions, new members, exits and dissolution.
- Sign it, store it with formation documents, and review it yearly.
Sources read for this page
Published November 8, 2026. Sources checked November 8, 2026. Rules, limits and forms change; the linked page is the authority.