How to add a member to an LLC

To add a member to an LLC, follow the admission rule in your operating agreement. If the agreement does not have one, state law decides: Delaware and Florida fall back on the consent of all the current members, and New York on a majority in interest of them. Then write what the new member gets into a signed amendment, update the state filing if your state puts members on the public record, and start filing a partnership return if the company had only one owner.Updated November 12, 2026

Who has to agree to a new member?

The operating agreement decides, and the state takes no part in it. Delaware's LLC Act says a person is admitted as a member after formation at the time provided in and upon compliance with the limited liability company agreement, and only where the agreement does not provide for it does the law fall back on the consent of all members. Florida's statute is built the same way: a person becomes a member as provided in the operating agreement, or with the consent of all the members.

The fallback is not the same everywhere. New York admits a person who acquires an interest directly from the company upon compliance with the operating agreement or, if the agreement does not so provide, upon the vote or written consent of a majority in interest of the members. So a single holdout can block a new member in Delaware and Florida, while in New York the holders of most of the company can admit one over an objection. Read your operating agreement first, because it outranks the default.

What do the members have to decide?

Four things, and all four belong in writing: what share of the profits the new member gets, what they put in, whether they get a vote, and whether they can act for the company.

Almost none of it is fixed by law. Delaware says a person may be admitted as a member and may receive an interest without making a contribution or being obligated to make one. Florida says a person may become a member without acquiring a transferable interest and without making or being obligated to make a contribution. A stake can be given for work rather than money if that is what the members agree.

Put the terms in an amendment to the operating agreement, have every member sign it, and keep it with the company's records. No state will ask to see it. It is the only document that says who owns what.

Do you have to tell the state?

It depends on whether your state puts members on the public record, and most do not. Delaware's certificate of formation sets out only the company's name and its registered office and agent. New York's articles of organization ask for the name, the county the office is in and the designation of the Secretary of State as agent for service of process, and never for the members. In both, a new member changes nothing the state holds.

Arizona is the opposite. A member-managed Arizona LLC lists its members on its Articles of Organization, through a Member Structure Attachment the Commission will reject the filing without, and A.R.S. 29-3202 says the articles shall be amended within thirty days after a member-managed company has a change in members. Subsection J is the part to notice: a company that has not amended as required may not maintain an action on a contract made in its name in any Arizona court until it does.

California reports it on the statement of information instead of the formation document. Form LLC-12 asks for each manager and, if no managers have been appointed or elected, the name and address of each member. It is due within 90 days of registering and every two years after that, and the Secretary of State says that any time there are information changes in between those periods, an updated statement should be filed. Florida names at least one person with authority to manage the company on its annual report, which is filed between January 1 and May 1. Annual reports by state has the deadline where you are.

What does it cost to add a member?

Nothing goes to the state in the states that do not name members. Where a filing is involved you pay that state's fee: $25 for an Arizona amendment, $60 if you expedite it, $100 for any New Jersey LLC amendment, and $220 in Delaware, whose statute sets $180 for a certificate of amendment and adds a $40 courthouse municipality fee to each instrument filed.

The cost people miss is the return. A one-owner LLC that takes on a member starts filing a partnership return every year, which is a second set of filing work for the business and a Schedule K-1 for each owner.

How does adding a member change the LLC's taxes?

It changes which return the company files. The IRS treats an LLC with only one member as an entity disregarded as separate from its owner, so the profit goes on the owner's own return. A domestic LLC with at least two members is classified as a partnership for federal income tax purposes unless it files Form 8832. So from the day a second member joins, the company files Form 1065 and gives each member a Schedule K-1 for their share of the income, deductions and credits.

Form 1065 is due by the 15th day of the 3rd month after the tax year ends, which is March 15 for a calendar-year partnership. Single-member LLC taxes covers the treatment the company is leaving behind, and the year of the change is one to hand to a tax preparer.

Is the new member buying in or putting money in?

The difference changes the tax bill, and Revenue Ruling 99-5 covers both. If the new member buys part of the owner's interest, the IRS treats it as the purchase of a share of each of the LLC's assets, which the owner is treated as holding directly, and the owner recognizes gain or loss on that deemed sale under section 1001. The two of them are then treated as contributing those assets to a new partnership.

If the new member instead contributes cash to the LLC for the same stake, no gain or loss is recognized by either of them under section 721(a), and the new member's basis in the partnership interest is the cash they put in. Same share of the company, different outcome, so have an accountant read the deal before anyone signs.

Does the LLC need a new EIN?

Probably not. The IRS lists two reasons an LLC needs a new EIN: you terminate an existing LLC and form a new corporation or partnership, or you own a single-member LLC and have to file excise or employment taxes. Adding a member is not on that list. The same agency's list of reasons to get an EIN in the first place does include a change in business structure or ownership, so if your case is not clear, ask the IRS before the return is due.

If the LLC never had an EIN, it needs one now. The IRS says you generally need an EIN to operate a partnership, and the partnership return is filed under it. How to get an EIN covers the application, which is free.

What goes wrong when a member joins?

Nothing written down. The members agree on a 60/40 split in a conversation, nobody amends the agreement, and years later the split is whatever the state's default rule gives them rather than what they meant. An operating agreement is what keeps that out of a judge's hands.

A stale state filing. In Arizona it costs the company the right to sue on its own contracts until the articles are fixed. Elsewhere it usually just means the public record names the wrong people, which a bank or a buyer will notice.

The one nobody expects: the SBA warns that LLCs can have a limited life in many states, and that when a member joins or leaves an LLC, some states may require the LLC to be dissolved and re-formed with new membership. An agreement that says what happens when the membership changes is the usual answer to it. Ask your state before you assume it does not apply to you.

Questions

Do all the members have to agree to add a new member?

Your operating agreement decides. Where it says nothing, Delaware and Florida fall back on the consent of all the members, and New York on the vote or written consent of a majority in interest of the members.

Do I have to file anything with the state to add a member?

In most states, no, because members are not on the formation document. Arizona is an exception: a member-managed LLC has to amend its articles within thirty days of a change in members, which costs $25. California reports members on the statement of information when no managers have been appointed.

Does adding a member change how the LLC is taxed?

Yes, if it had one owner. The IRS classifies a domestic LLC with at least two members as a partnership unless it files Form 8832, so the company files Form 1065 and gives each member a Schedule K-1. The return is due the 15th day of the 3rd month after the tax year ends.

Does the LLC need a new EIN when a member joins?

Adding a member is not on the IRS's list of reasons an LLC needs a new EIN. If the LLC has no EIN at all, get one: the IRS says you generally need an EIN to operate a partnership, and the partnership return is filed under it.

Can someone become a member without putting money in?

In Delaware and Florida, yes. Delaware says a person may be admitted and receive an interest without making a contribution, and Florida says a person may become a member without acquiring a transferable interest and without making one. The operating agreement still has to allow it.

What happens when a single-member LLC adds a member?

It becomes a multi-member LLC and is taxed as a partnership from that point unless it elects corporate treatment. Revenue Ruling 99-5 treats the change as the conversion of a disregarded entity into a partnership, and the new split should go into an amended operating agreement.

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