Arizona LLC Membership Certificate
A membership certificate is a one-page document that shows who owns an Arizona limited liability company and how much of the company each owner holds. Below is a sample certificate for a fictional company, World Wide Widgets AZ, LLC, with each important part numbered and explained in plain English.
- A membership certificate is written evidence of who owns an Arizona LLC and what percentage each owner holds.
- Arizona law does not require an LLC to issue membership certificates. The Operating Agreement decides whether the LLC uses them.
- The certificate proves ownership; it does not create it. Losing a certificate does not mean losing your interest in the LLC.
- Certificates are kept in the LLC's records, not filed with the Arizona Corporation Commission.
Anatomy of an Arizona LLC Membership Certificate
Every part of the certificate has a job. The numbers below match the gold numbers on the sample.
Each certificate gets its own number, starting with 1. When a member sells or gives away an interest, the old certificate is marked cancelled and the LLC issues a new certificate with the next number. The numbers create a paper trail of every change in ownership.
This box shows the percentage of the LLC the certificate represents. Here it is 100%, so Homer and Marge together own the entire company. In a multi-member LLC each member gets a separate certificate for his or her own percentage.
The certificate names the owners and states how they own the interest. “CPWROS” means community property with right of survivorship, a form of ownership available to Arizona married couples. It is explained in detail below.
The certificate does not contain the rules for running the LLC. It says the Articles of Organization and the Operating Agreement control, including all later amendments. That is why every Arizona LLC needs a well-written Operating Agreement.
The owners cannot freely sell or give away the interest. Any transfer must follow the Operating Agreement and any separate agreement among the owners, such as a Buy Sell Agreement.
This capitalized paragraph warns that the interest was not registered with the SEC or any state securities regulator. It tells anyone holding the certificate that the interest is not a publicly traded investment and cannot be resold to the public.
The certificate is effective as of a stated date and is signed on behalf of the LLC. A manager-managed LLC is signed by a manager. A member-managed LLC is usually signed by one or more members, as the Operating Agreement provides.
Is an Arizona LLC Required to Issue Membership Certificates?
No. Arizona’s LLC Act does not require an LLC to issue membership certificates. Whether an LLC issues them is up to the members, and the Operating Agreement should say so.
Even though they are optional, we recommend them. A certificate gives each owner simple written proof of ownership that is easy to show to people who ask for it:
- Banks and lenders opening accounts or making loans to the LLC.
- Title and escrow companies closing real estate deals where the LLC buys or sells property.
- Heirs and personal representatives who must prove what a deceased owner owned.
- The members themselves, so there is never a dispute about who owns what percentage.
The certificate is evidence of ownership. It does not create ownership. A member’s rights come from the Operating Agreement and the LLC’s records. If the certificate and the Operating Agreement disagree, the Operating Agreement controls. Read 19 Ways Members Can Be Harmed if Their Multi-Member LLC Lacks an Operating Agreement.
What Does CPWROS Mean?
CPWROS stands for community property with right of survivorship. Arizona law lets a married couple own property this way, including an interest in an LLC.
When the first spouse dies, the surviving spouse automatically owns the deceased spouse’s half of the interest without probate. Community property also gets a valuable tax benefit: under Internal Revenue Code §1014 both halves of the property get a new income tax basis equal to fair market value when the first spouse dies, not just the deceased spouse’s half.
CPWROS only solves the first death. When the surviving spouse later dies, the LLC interest may have to go through probate unless it is owned by a revocable living trust. That is why our Gold LLC formation package includes a revocable living trust that owns the LLC.
What Happens When Ownership Changes?
When a member sells, gives away or otherwise transfers an interest in an Arizona LLC, the paperwork should match the change. The usual steps are:
- Confirm the transfer is allowed by the Operating Agreement and any Buy Sell Agreement, and get any required consent of the other members.
- Sign a written assignment of the membership interest from the old owner to the new owner.
- Mark the old certificate “Cancelled” and keep it with the LLC’s records.
- Issue a new certificate, with the next certificate number, to each new owner.
- Update the LLC’s membership ledger and, if needed, amend the Articles of Organization with the Arizona Corporation Commission.
Learn more in our article How to Add or Remove a Member of an Arizona LLC.
Frequently Asked Questions
Is an LLC membership certificate the same as a stock certificate?
It serves the same purpose. A corporation issues stock certificates to its shareholders. An LLC issues membership certificates to its members. Both are written evidence of who owns the company and how much of it they own.
Does a single-member LLC need a membership certificate?
It is not required, but it is a good idea. A certificate is simple proof that you own 100% of your LLC when a bank, lender, title company or your heirs ask for it.
Do I file the membership certificate with the Arizona Corporation Commission?
No. The Arizona Corporation Commission never sees membership certificates. Keep the original certificates and a membership ledger with the LLC's other company records, such as the Operating Agreement and organizational resolutions.
What happens if I lose my membership certificate?
You still own your interest in the LLC. The certificate is evidence of ownership, not the ownership itself. The LLC can cancel the lost certificate in its records and issue a replacement certificate with a new number. Many companies have the owner sign a lost certificate affidavit first.
Who signs an Arizona LLC membership certificate?
The person the Operating Agreement authorizes to sign for the LLC. In a manager-managed LLC that is usually a manager. In a member-managed LLC it is usually one or more members.
Created November 8, 2026, by Richard Keyt, Arizona attorney
Call, email or text Richard Keyt, father
Direct phone: 480-664-7478
Email: rk@keytlaw.com
Call, email or text Richard C. Keyt, son
Direct phone: 480-664-7472
Email: rck@keytlaw.com