How to Add a Member to an LLC

Check Your Operating Agreement First

Before adding anyone, read your LLC's operating agreement for its rule on admitting new members. Most agreements, and most state default LLC statutes when an agreement is silent, require the unanimous consent of existing members to admit a new one, though some agreements set a lower threshold, such as a majority vote. If your LLC has no written operating agreement, your state's default LLC statute governs, and most defaults require unanimous consent as well.

Get the Required Member Approval

Document the approval in writing, even if your operating agreement doesn't strictly require it. A simple written consent, signed and dated by each existing member, protects everyone if a disagreement comes up later about whether the new member was properly admitted.

Decide the New Member's Ownership Percentage and Contribution

Determine what the new member is contributing, cash, property, services, or a combination, and what ownership percentage that contribution buys. Adding a new member usually dilutes existing members' percentages unless the new member's contribution is treated as entirely new capital on top of the LLC's existing value; decide this explicitly rather than leaving it ambiguous.

Update or Create the Operating Agreement

Formally admit the member through a written amendment to the operating agreement, or a new operating agreement if the LLC didn't have one before. The amendment should state the new member's name, ownership percentage, capital contribution, and voting rights, and should be signed by all members, new and existing.

File Any Required State Paperwork

Most states don't require you to amend the Articles of Organization just to add a member, since Articles typically identify the LLC itself, not its individual members. Some states do ask for updated manager or member information in the LLC's next annual report or periodic filing instead of a standalone amendment. Check your state's filing agency to see which applies, since requirements vary by state.

Get or Update Your EIN if Needed

Adding a member doesn't, by itself, require a new EIN. Per the IRS, you need a new EIN for an LLC only if you terminate an existing LLC to form a new corporation or partnership, or if a single-member LLC must start filing excise or employment taxes. If your LLC's "responsible party," the person the IRS treats as controlling it, changes as part of adding the member, file Form 8822-B within 60 days to update that record, even though the EIN itself stays the same.

Update Licenses, Bank Accounts, and Contracts

After the paperwork is signed, update your bank's signature cards and any business licenses, loan documents, or leases that list the LLC's ownership or authorized signers, so outside parties have accurate, current information about who can act for the LLC.

Converting From a Single-Member to a Multi-Member LLC Changes Your Tax Classification

A single-member LLC that the IRS treats as a disregarded entity automatically becomes a partnership for federal tax purposes the moment it has more than one member, with no election required to make that happen. That means the LLC starts filing Form 1065 and issuing Schedule K-1s to each member instead of reporting income on the single owner's personal return. Talk to a tax professional before adding a member if you're not sure how this shift affects your filings for the year of the change.

Admitting a Member Can Dilute Existing Members Unless You Plan the Contribution

If a new member buys in at a price that doesn't reflect the LLC's current value, existing members can end up with a smaller share of the company's worth than they expect. Agree on a valuation method, even an informal one, before finalizing the new member's ownership percentage.

Some States Require Updating the Annual Report, Not the Articles

A few states list managers or members in the periodic annual report rather than the Articles of Organization, so the update happens at your next filing rather than through an immediate amendment. Don't assume no state paperwork is required just because the Articles themselves don't need amending; check what your state's annual or biennial filing asks for.

Put the Terms in Writing Before Money Changes Hands

Handshake agreements about ownership percentage, contribution amount, or voting rights are hard to enforce and easy to dispute later. Get the operating agreement amendment signed by everyone involved before the new member contributes money, property, or services to the LLC, not after.