Joinder Agreement
ARBITRATION AGREEMENT
This Arbitration Agreement (the "Agreement") is entered into on [Date] (the "Effective Date") by and between
, an individual having their usual place of living at [Address], [City], [State] [ZIP Code](the "First Party"), and
[Second Party's name], [Who Second Party], having their usual place of living at [Address], [City], [State] [ZIP Code] (the "Second Party"), collectively referred to as the "Parties" and individually as the "Party".
WHEREAS the Parties are bound by a [First Party's name], [Who First Party],[Name] ntered into on [First Party's name](the "Contract"), which governs the rights, responsibilities, and obligations between them;
WHEREAS the Parties acknowledge and agree that any disputes or controversies arising out of or in connection with the Contract shall be resolved in accordance with the arbitration provisions contained therein;
NOW, THEREFORE, in consideration of the mutual promises and obligations set forth herein, and upon other valuable considerations, the receipt and sufficiency of which is hereby acknowledged, the Parties have agreed as follows:
SUBJECT OF THE AGREEMENT. This Agreement pertains to the arbitration of all disputes, claims, or controversies arising from or related to the interpretation, implementation, breach, termination, or validity of the Contract (the "Dispute"). The arbitration shall be carried out according to its rules. The arbitration shall be held in [City], [State] State.
The Dispute shall be submitted to one arbitrator (the "Arbitrator").
The arbitration shall be held by [Institution].
The Parties agree that the responsibilities of the Arbitrator will be as follows:
The Arbitrator's decision shall be final and binding on all Parties unless otherwise set forth in this Agreement.
INITIATION OF ARBITRATION. When the Party wants to initiate an arbitration under this Agreement, the initiating Party must provide the other Party with the written notice of claim along with all supporting materials within [Number of days] days after filing the claim. The initiating Party bears full responsibility for adhering to all federal, state, and local legal requirements and must comply with the chosen arbitration rules. The arbitrability of the notice of claim is contingent upon compliance with the statute of limitations.
PREHEARING CONFERENCE. Before initiating arbitration proceedings, the Parties, in collaboration with the appointed Arbitrator, shall convene a prehearing conference to facilitate the efficient and orderly resolution of the Dispute. The prehearing conference shall be held at a mutually agreed-upon time and location or conducted virtually, as determined by the Parties. The critical objectives of the prehearing conference shall include but not be limited to: [Other] Scheduling of hearing: The Parties shall agree upon the date, time, and duration of the arbitration hearing, considering the availability of a [First Party's details] participants.[Address], [City] [ZIP Code] Procedural matters: The Parties may address and resolve any procedural issues, such as the exchange of documents, the su [First Party's email] ssion of evidence, etc. Witnesses and experts: The Pa...
THE HEARING. The arbitration hearing shall take place as specified above in this Agreement. It shall be held in [Language]. After the hearing, the Arbitrator shall render a final and binding decision based on the applicable law and arbitration rules. The decision shall be communicated to the Parties in writing.
DISCOVERY DISPUTE. In the event of a discovery dispute, the Parties shall initially seek resolution through good-faith discussions. If the matter remains unresolved, it shall be promptly referred to the Arbitrator. The Arbitrator's decision on the Dispute shall be final and binding, ensuring an efficient arbitration process. The Parties agree to cooperate and comply with the Arbitrator's rulings throughout the proceedings.
ARBITRATION AWARD. If the applicable law requires confirmation of the arbitration award in a court of competent jurisdiction, the prevailing Party may seek such confirmation. The Party seeking confirmation shall submit the award and any necessary documentation to the relevant court within the time frame specified in the applicable law. Upon obtaining judicial confirmation of the award, the prevailing Party may seek enforcement of the confirmed award in any court of competent jurisdiction.
APPELLATE ARBITRATION. Both Parties shall have the right to initiate the appellate arbitration in case of the Arbitrator's material and prejudicial error of law or determinations of fact that are erroneous during the arbitration. The Party initiating the appellate arbitration bears full responsibility for compliance with all federal, state, and local legal requirements and must comply with the rules of the chosen arbitration.
ARBITRATION COSTS AND FEES. The costs and fees associated with the arbitration proceedings shall be allocated as follows:
- Filing fees: The Party initiating the arbitration shall be responsible for paying any filing fees required by the chosen arbitration institution;
- Arbitrator's fees: The Arbitrator's fees and expenses, including those charged by the arbitration institution for the Arbitrator's services, shall be shared equally between the Parties unless the Arbitrator determines a different allocation based on the circumstances of the case;
- Legal fees and expenses: Each Party shall bear its legal fees and expenses incurred in connection with the arbitration, regardless of the outcome, unless otherwise awarded by the Arbitrator in the final award or as required by applicable law;
- Administrative fees: The Parties shall equally share any administrative fees charged by the arbitration institution for managing the arbitration process.
The Parties acknowledge their obligation to promptly pay their respective shares of the arbitration costs and fees as determined by the Arbitrator or the arbitration institution. Failure to make timely payments may be addressed by the Arbitrator, and any resulting consequences may include the suspension or termination of the arbitration proceedings.
The Parties agree to keep detailed records of their costs and expenses related to the arbitration and, upon the Arbitrator's request, provide a breakdown of such costs for review.
NOTICE. Any notice or communication required under this Agreement shall be sufficiently given if delivered personally or by certified mail, a return receipt requested to the address set forth in the opening paragraph or to such other address as one Party may have furnished to the other Party in writing. It may also be delivered to the email address set forth below.
If to the First Party: [Second Party's email];
If to the Second Party: [Second Party's details].
Either Party may change the registered mail or email address for receipt of notices by giving written notice to the other Party.
GOVERNING LAW AND DISPUTE RESOLUTION. This Agreement shall be governed by and interpreted in accordance with the laws of the State of [Governing law] of [State], and any disputes resulting from or related to this Agreement shall be exclusively resolved by the courts of [Jurisdiction] the State of [State].
SEVERABILITY. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.
ENTIRE AGREEMENT. This Agreement substitutes the entire understanding between the Parties and supersedes any prior oral or written agreements.
WAIVER. The failure of any Party to enforce a particular provision of this Agreement shall not constitute a waiver of their right to enforce that provision in the future.
AMENDMENTS. This Agreement may be amended or modified only by a written agreement signed by both Parties. Any amendments to this Agreement shall be binding if they are in writing and signed by both Parties.
BINDING EFFECT. This Agreement shall be binding upon the Parties and their respective successors and assigns.
ANNEX. dated .
IN WITNESS WHEREOF, the Parties have executed this Agreement as of the Effective Date.
THE FIRST PARTY THE SECOND PARTY , USA , USA __________________________________ (Place for signature) __________________________________ (Place for signature)
Party 1
________________
Signature
Date: ________________
Party 2
________________
Signature
Date: ________________
What Is a Joinder Agreement?
A Joinder Agreement in the United States governs the relationship between the parties by fixing what each must do.
Joinder agreements are rooted in common law contract principles and are enforceable provided they satisfy the basic elements of contract formation: mutual assent, consideration, and capacity. Under the Restatement (Second) of Contracts Section 302, third parties can acquire enforceable rights through properly executed agreements. Many states also recognize joinder through statutory frameworks, particularly in the context of LLC operating agreements and partnership agreements governed by the Revised Uniform Limited Liability Company Act (RULLCA) or the Revised Uniform Partnership Act (RUPA).
The key advantage of a joinder agreement over drafting an entirely new contract is efficiency. When a company adds a new member to an LLC operating agreement, issues additional shares to a new investor under a stockholders' agreement, or brings a new vendor into an existing master services agreement, the joinder mechanism preserves the original contract's integrity while seamlessly incorporating the new party. Courts consistently uphold joinder agreements as valid contract modifications when all necessary parties consent and the agreement is properly documented.
When Do You Need a Joinder Agreement?
When a new member joins an LLC, they must accede to the existing operating agreement. Rather than amending and restating the entire document, a joinder agreement binds the new member to all existing provisions, including profit distribution, voting rights, and capital contribution requirements.
In venture capital and private equity transactions, new investors in subsequent funding rounds typically sign joinder agreements to become parties to the stockholders' agreement, investors' rights agreement, and right of first refusal and co-sale agreement negotiated in earlier rounds.
Real estate syndications use joinder agreements when new limited partners or members join an investment entity after the initial offering. The joinder binds them to the partnership agreement's terms regarding distributions, management authority, and transfer restrictions.
Corporate restructurings -- including mergers, asset purchases, and spin-offs -- frequently require successor entities to execute joinder agreements to assume contractual obligations from predecessor companies. Under UCC Section 2-210, an assignee's assumption of duties requires the obligee's consent, which the joinder agreement formalizes.
Skipping this step creates significant legal risk. Without a joinder, the new party may argue they are not bound by the original agreement's restrictive covenants, indemnification obligations, or dispute resolution provisions. This gap can undermine the enforceability of the entire contractual framework.
What to Include in Your Joinder Agreement
The recitals section must precisely identify the original agreement -- by title, date, and parties -- that the joining party is acceding to. Any amendments to the original agreement should also be referenced so the joining party understands the full scope of obligations they are assuming.
The joining party's full legal name, entity type (individual, corporation, LLC), address, and state of formation establish their identity and legal capacity. For entities, including the name and title of the authorized signatory is essential to demonstrate proper authority.
An explicit assumption clause must state that the joining party agrees to be bound by all terms and conditions of the original agreement as if they were an original signatory. This language should be unambiguous -- courts have invalidated joinders where the scope of assumed obligations was unclear.
Representations and warranties from the joining party typically confirm that they have the authority to enter the agreement, that their joinder does not violate any existing obligation, and that they have reviewed and understood the terms of the original agreement.
The effective date of joinder determines when the new party's rights and obligations commence. In some cases, this date may differ from the execution date, particularly when regulatory approvals or closing conditions must be satisfied first.
Consent of the original parties is often required. The agreement should specify whether all original parties must consent or whether consent from a specified majority is sufficient. Many LLC operating agreements and stockholders' agreements include pre-authorized joinder provisions that streamline this process.
The governing law and dispute resolution provisions from the original agreement should be expressly incorporated by reference. Signatures from the joining party and the requisite original parties, along with the date of execution, complete the document.
Cite this page
Reference this free template in an article, syllabus, or research note:
Forms Legal. (2026). Joinder Agreement (United States) [Legal document template]. Forms Legal. https://forms-legal.com/usa/business/corporate/joinder-agreement
"Joinder Agreement (United States)." Forms Legal, 2026, https://forms-legal.com/usa/business/corporate/joinder-agreement.
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title = {Joinder Agreement (United States)},
year = {2026},
howpublished = {\url{https://forms-legal.com/usa/business/corporate/joinder-agreement}},
note = {Free legal document template. Based on Uniform Commercial Code (UCC)}
}Also available for these jurisdictions:
Frequently Asked Questions
A joinder agreement is a document by which a new party agrees to become bound by an existing agreement, joining as a party to a contract that other parties have already signed. It is commonly used when a person or entity must be added to an existing contract, such as a new shareholder joining a shareholders agreement, a new member joining an LLC operating agreement, a new investor becoming subject to the terms of an investment or stockholders agreement, or a new subsidiary joining a credit agreement. Rather than redrafting the entire contract, the joinder lets the new party accede to the existing terms by signing a short agreement that incorporates the original contract by reference. The joinder typically identifies the original agreement, states that the new party agrees to be bound by it, and is signed by the new party and, where required, acknowledged by the existing parties. Because the joinder makes the new party subject to the existing rights and obligations, it efficiently adds parties to ongoing contractual arrangements without renegotiating the whole agreement.
A joinder agreement works by having a new party sign a document stating that they agree to be bound by an existing contract, thereby becoming a party to that contract as if they had signed it originally. The joinder incorporates the underlying agreement by reference, so the new party assumes the rights and obligations the agreement imposes on parties of their type, such as a new shareholder taking on the transfer restrictions and obligations in a shareholders agreement. The original agreement often anticipates this by including a provision requiring new parties, such as transferees of shares or new members, to execute a joinder before they can participate. The joinder is typically short, identifying the original agreement and the new party and confirming the new party's agreement to be bound, and it may need acknowledgment by the existing parties or the company. Because the joinder efficiently binds a new party to established terms, it allows contracts with changing participants, such as equity arrangements, to add parties without amending or re-signing the entire agreement.
A joinder agreement is required when an existing contract calls for new parties to accede to its terms, or when adding a party to an ongoing agreement is necessary for the arrangement to function. Many shareholders agreements, operating agreements, and investment documents include provisions stating that any new shareholder, member, or transferee must sign a joinder before acquiring or exercising rights, so that everyone holding an interest is bound by the same terms, such as transfer restrictions, voting arrangements, and drag-along or tag-along provisions. Joinders are also used in financing transactions when a new subsidiary or guarantor must join a credit agreement. Requiring a joinder ensures that the contractual framework remains complete as participants change, preventing gaps where a new party holds an interest but is not bound by the governing terms. Because the underlying agreement often mandates the joinder for new parties, failing to obtain one can leave a new participant outside the contract's obligations. The joinder is the standard tool to keep all relevant parties bound.
A joinder agreement should identify the original agreement being joined, the date and parties of that agreement, and the new party who is acceding to it, and it should clearly state that the new party agrees to be bound by the terms of the original agreement. It often specifies the capacity in which the new party joins, such as a new shareholder or member, and confirms that the new party assumes the rights and obligations applicable to that role under the original contract. The joinder may include representations by the new party, such as that they have received and reviewed the original agreement, and may require acknowledgment or countersignature by the existing parties or the company. The new party signs the joinder, which then becomes part of the contractual record. Because the joinder's purpose is to bind the new party to established terms, it should accurately reference the original agreement and the obligations being assumed. A clear, properly executed joinder ensures the new party is fully integrated into the existing contractual arrangement.
The difference between a joinder and an amendment is what each changes: a joinder adds a new party to an existing contract without altering its terms, while an amendment modifies the terms of the contract among the existing parties. A joinder is used when someone, such as a new shareholder or member, needs to become bound by an agreement that is already in place; the new party signs the joinder and accedes to the existing terms, and the contract's substance remains the same. An amendment, by contrast, changes provisions of the contract, such as adjusting obligations, pricing, or other terms, and is signed by the parties whose agreement is required to modify it. The two serve different purposes and can be used together when adding a party requires both bringing them in and adjusting terms. Because a joinder binds a new participant to unchanged terms while an amendment revises the agreement itself, parties should use the joinder to add someone to the existing contract and an amendment to change what the contract says.
This template is provided for informational purposes only and does not constitute legal advice. Laws vary by jurisdiction and change over time. Consult a qualified attorney for advice specific to your situation.Full disclaimer
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