How to Add a Member to an LLC Without Starting Over

Step one is your operating agreement, not a state form

Membership in an LLC is a matter between the members. Start with your operating agreement and look for the section on admitting new members. Many agreements say who has to consent, whether the newcomer must contribute money or services, and how ownership percentages are recalculated. If your agreement says nothing on the point, your state’s LLC law supplies the default rule, and that is worth a short conversation with a lawyer before anyone signs.

The amendment itself usually records a few things: the new member’s name and address, what they are contributing, the new ownership split, how profits and losses will be shared, and whether the LLC is member-managed or manager-managed going forward. If you never wrote an operating agreement because you were the sole owner, this is the moment to write one. Running a two-owner company with no written terms is how small disagreements become expensive ones. Our guide on whether an operating agreement is required covers what one should contain.

Does the state need to know?

It depends on the state and on how your LLC is managed. Some states ask for member or manager names on a recurring filing; others never ask who the owners are. Three examples show the range:

Whatever the state collects on these forms becomes part of a public record anyone can look up. We cover how that works state by state in does LLC ownership become public record.

The tax switch: from disregarded entity to partnership

For federal income tax, a single-member LLC is usually a disregarded entity: the IRS ignores the LLC and taxes its income on the owner’s return. That classification depends on having one owner. The Treasury regulation says it plainly: “A single member entity disregarded as an entity separate from its owner is classified as a partnership when the entity has more than one member” (26 CFR 301.7701-3(f)(2)). There is no form to file to make that happen, and no Form 8832. It happens because the second member arrived.

How the new member comes in changes the tax result for you. The IRS worked through two versions in Revenue Ruling 99-5:

• The newcomer buys part of your stake. The IRS treats you as selling that share of each of the LLC’s assets to the newcomer, so you can owe tax on any gain. Then both of you are treated as contributing your shares of the assets to a new partnership, and that contribution step itself is tax-free.
• The newcomer puts money into the LLC. The newcomer’s payment is treated as a contribution to a partnership, and you are treated as contributing all of the LLC’s assets to it. Neither of you recognizes gain on the conversion itself.

The ruling’s facts assume an LLC with no debts, so an LLC that carries loans or other liabilities can come out differently. This is the part of the change worth paying a tax preparer to review.

From the day the second member comes in, the LLC is a partnership for federal tax purposes. It files a partnership return on Form 1065 and gives each member a Schedule K-1 showing their share. Income from before that date generally stays on the original owner’s return. Exactly how to split the first year between the two returns is a question to settle with whoever prepares them.

Do you need a new EIN? It depends on whose number you were using

Some guides say that adding a member usually means applying for a new EIN. The regulation draws a narrower line. An entity that has an EIN keeps it when its tax classification changes, and for a disregarded LLC that becomes a separate entity the rule is specific: “If a single owner entity’s classification changes so that it is recognized as a separate entity for federal tax purposes, and that entity had an EIN, then the entity must use that EIN and not the TIN of the single owner. If the entity did not already have its own EIN, then the entity must acquire an EIN and not use the TIN of the single owner” (26 CFR 301.6109-1(h)(2)(ii)).

Many single-member LLCs already have their own EIN. If the number you have been using was issued to you as a sole proprietor, it belongs to you, not the LLC. Our guide to whether a single-member LLC needs an EIN explains when the IRS itself requires it.

One more IRS form to know about: Form 8822-B requires an entity with an EIN to report a change in its responsible party within 60 days. The responsible party is the person who ultimately owns or controls the entity. Bringing in a minority member usually does not change that person. If the new member takes over control, it may.

Where the new member’s name and address end up

A new member will want to know where their name and address get written down. There are several places, and they are not equally visible.

On the bank side, the federal rule ties the beneficial-owner check to opening an account, and it counts anyone who owns 25% or more, plus one person who controls the company. Banks also have to keep that information current on a risk basis, so your bank may ask about a new 25% owner even though the account is not new. For an individual, the rule asks for a residential or business street address. The bank record and the K-1 row are both private, and our multi-member LLC K-1 mailing address guide explains which address goes on the K-1.

The public row is the one to plan for. California’s statute, for example, accepts a business address as well as a residence address for the people it lists. If a new member would rather not have a home address in a searchable state record, sort out which address goes on the form before it is filed, because public databases and data brokers can keep a copy of a record long after you change it. Our guide on keeping a home address private when forming an LLC walks through the options. If you plan to use a business address, you can check how it is classified with our free address checker first.

Situations that change the answer

The steps above cover the common case: a disregarded single-member LLC adding a U.S. member. If your LLC already has two or more members, it is already a partnership for tax (unless it elected corporate treatment), and adding one more does not change its classification or its EIN. A newcomer buying into an existing partnership raises different tax questions, which this guide does not cover. The situations below also change the result.

• Your LLC elected to be taxed as an S corporation. An LLC that has elected corporate tax treatment keeps that classification when its membership changes (26 CFR 301.7701-3(f)(1)), so it does not become a partnership. But an S corporation cannot have a nonresident alien shareholder. If the new member is one, the S election ends on the day they come in, and the LLC is taxed as a C corporation from then on.
• The new member is not a U.S. person. A partnership with income effectively connected with a U.S. business has to withhold tax on the share of that income allocated to foreign partners, and it reports that withholding on Forms 8804 and 8805. Our guide to how foreign-owned LLCs pay U.S. taxes covers the wider picture. This is work for a certified public accountant (CPA).
• The new member is your spouse. In community property states, the IRS lets a married couple who own an LLC together as community property, with no one else owning part of it, choose to treat it as a disregarded entity instead of a partnership (Rev. Proc. 2002-69). In other states, adding your spouse works like adding anyone else: the LLC becomes a partnership.

A checklist, in order

Here is a workable order for bringing in a member:

• Read your operating agreement’s rules for admitting members, and get the consents it requires.
• Agree on the contribution, the ownership split, and how management will work, then sign an amended operating agreement.
• Decide with your tax preparer whether the newcomer is buying part of your stake or contributing to the LLC, because the tax result differs.
• Confirm the LLC has its own EIN. If it has been using your Social Security number or your sole-proprietor EIN, apply for one.
• Check whether your state wants the new member or manager on a filing, and decide which address goes on it before you file.
• Tell your bank, and expect it to ask for the new owner’s details if they own 25% or more.
• If your LLC was a disregarded entity, keep books as a partnership from the admission date, and plan for Form 1065 and a Schedule K-1 for each member.