Mutual NDA Template: How to Write a Mutual Non-Disclosure Agreement

When two companies sit down to explore a partnership, a joint venture, or a possible acquisition, both sides end up putting sensitive information on the table. Financials, product roadmaps, customer lists, technical architecture. A mutual non-disclosure agreement is the document that lets that exchange happen without either party worrying the other will walk away and use what they learned.

A mutual NDA (sometimes written as an MNDA or bilateral NDA) protects both parties at once. That sounds obvious, but "mutual" on the cover page does not guarantee the terms are actually even. This guide walks through how to write one that protects both sides equally, which clauses matter most, and the drafting mistakes that quietly turn a "mutual" agreement into a one-sided one.

What Is a Mutual NDA?

A mutual NDA is a confidentiality contract in which both parties disclose information and both agree to protect what they receive. Each company is at the same time a disclosing party (sharing its own information) and a receiving party (bound to keep the other side's information confidential).

That two-way structure is the difference between a mutual NDA and a one-way, or unilateral, NDA. In a one-way NDA only one party discloses. You would use a one-way agreement when hiring a contractor who needs access to your systems, for example. A mutual NDA fits the situations where information flows in both directions and neither side wants to sign an agreement that binds only them. For a fuller breakdown of the two structures, see our guide on NDA vs. MNDA.

When to Use a Mutual NDA

Reach for a mutual NDA whenever both parties will share something they would not want made public. Common triggers:

• Partnership or joint venture discussions, where each company shares its plans, pricing, and capabilities to figure out if the fit works
• Merger and acquisition talks, where the buyer reviews the target's financials while the target reviews the buyer's plans for the combined business
• Technical integrations, where two companies exchange API details, architecture diagrams, or roadmaps to scope a build
• Vendor and supplier evaluations that go both ways, such as a manufacturer and a brand comparing cost structures and forecasts
• Co-marketing or co-development deals, where both sides contribute proprietary material

If only one side is really disclosing, a mutual NDA adds complexity you do not need. Signing a bilateral agreement out of habit can slow negotiations because the party that never planned to share anything now has obligations to argue over. Match the document to the actual flow of information.

Core Clauses in a Mutual NDA

The clause list looks similar to any NDA, but in a mutual agreement each provision has to work in both directions. The test for every clause is simple: swap the party names and confirm it still reads fairly.

Definition of Confidential Information

This is the clause that does the heavy lifting. It should cover the categories of information each side expects to share: business plans, financial data, customer and supplier lists, technical specifications, source code, pricing, and unreleased product details.

Because both parties disclose, write the definition around roles rather than names. "Confidential Information disclosed by either party" keeps it symmetric. Decide up front whether oral disclosures count and, if so, whether they need to be confirmed in writing within a set number of days. Trying to protect everything makes the definition unenforceable, so tie any catch-all language to a marking or notice requirement.

Obligations of the Receiving Party

Both parties, acting as the receiving party, agree to:

• Use the other side's information only for the stated purpose
• Protect it with at least the same care they use for their own confidential information, and no less than reasonable care
• Limit access to employees, advisors, and contractors who genuinely need to know
• Refrain from disclosing it to any third party without written consent

The "need to know" limit matters more in a mutual deal because both companies may loop in lawyers, accountants, and board members. Say clearly that anyone who receives the information is bound by confidentiality terms at least as strict as the NDA itself.

Exclusions and Carve-Outs

Every NDA needs standard exclusions, and in a mutual agreement they apply to both sides. Information is not protected if it:

• Was already public, or becomes public through no fault of the receiving party
• Was already known to the receiving party before disclosure
• Was independently developed without using the other side's information
• Came from a third party who was free to share it

There is also the legally required disclosure carve-out. If a court or regulator orders one party to produce documents, the NDA should let them comply, but require prompt notice to the other side and cooperation in seeking a protective order so only the minimum necessary is disclosed.

Term and Survival

Set one term that applies to both parties. Confidentiality obligations typically run two to five years, though trade secrets stay protected as long as they remain secret. Watch for an imbalance here: a draft that protects one party's information for five years and the other's for two is not truly mutual, even if the heading says so.

Spell out what survives the end of discussions. If the parties never sign a deal, the confidentiality duties should continue for the full term. The obligation to protect information does not disappear just because the relationship did not move forward.

Return or Destruction of Materials

Require each party to return or certify destruction of the other side's confidential materials on request or when talks end. Include copies, notes, and any derivative summaries. Many companies now keep information in shared drives and email threads, so it helps to acknowledge that certified deletion of electronic copies satisfies the requirement, with a reasonable exception for archival backups that are not actively accessed.

Remedies

State that a breach causes irreparable harm and that the non-breaching party may seek injunctive relief without posting a bond. In a mutual NDA this right runs both ways, which is fair precisely because either party could be the one harmed. Courts grant injunctions faster than they award damages, so this clause is often the most practical protection in the whole document.

Governing Law and Purpose

Name the state whose law governs and where disputes will be heard. Two companies in different states will need to agree on a neutral or mutually acceptable forum. Finally, state the purpose of the exchange, such as "evaluating a potential business relationship." A defined purpose stops either side from arguing they can use the information for something unrelated.

How to Write a Mutual NDA: Step by Step

Step 1: Identify both parties. Use full legal names and states of incorporation. Make clear that each party acts as both discloser and recipient.

Step 2: State a shared purpose. Describe why the parties are exchanging information. Keep it broad enough to cover the negotiation but narrow enough to limit later use.

Step 3: Define confidential information by role. List categories that apply to either side, and decide how oral disclosures are handled.

Step 4: Write symmetric obligations. Non-use and non-disclosure are the two core duties. Confirm they bind both parties identically.

Step 5: Add the standard exclusions. Public information, prior knowledge, independent development, and legally required disclosure, applied to both sides.

Step 6: Set one term and survival period. Pick a duration that fits the sensitivity of the information and agree on it jointly.

Step 7: Cover return, remedies, governing law, and signatures. Both signatories must have authority to bind their companies.

If you want to see how these steps map onto a one-way agreement for comparison, our NDA contract template guide walks through the same structure from a single-disclosure angle.

Who Sends the First Draft?

Either side can send the first draft of a mutual NDA, and the party that does gets a small edge because the base language starts from their template. If you receive the other side's draft, do not treat "mutual" as permission to sign without reading. Redline anything that quietly favors the sender: a definition that lists their categories of information but not yours, a notice-and-cure period that runs only one way, or a jurisdiction clause that sends every dispute to their home state.

A few practical points come up again and again in bilateral deals:

• Keep the purpose narrow enough that neither party can repurpose what they learn, but wide enough to cover the whole conversation.
• Agree on how each side may share information with lawyers, accountants, and advisors, and make sure those people are bound by the same terms.
• Decide whether the NDA stands on its own or leads into a larger deal, and do not let it accidentally commit either party to exclusivity.

Most mutual NDAs get signed within a round or two of edits. When the back-and-forth drags on for weeks, the parties usually disagree about something bigger than confidentiality, and the NDA is just where that disagreement is surfacing.

Common Mistakes in Mutual NDAs

Assuming "mutual" means balanced. The most frequent problem is a template that started life as a one-way NDA and was lightly edited. Definitions, terms, or remedies still favor the original drafter. Read each clause and confirm it treats both parties the same.

Mismatched term lengths. A five-year obligation on one party and a two-year obligation on the other is a red flag. Push for a single term.

Overbroad definitions. "All information exchanged between the parties" is not a definition a court will enforce. Name categories and tie any catch-all to a marking requirement.

Ignoring representatives. Both companies will share information with advisors. If the NDA does not bind those representatives, a leak through a third party may not count as a breach.

Forgetting survival. If the confidentiality obligation ends when discussions end, information disclosed during a deal that collapses is left unprotected the moment talks stop.

Confusing the NDA with the deal. A mutual NDA governs the exchange of information, not the eventual agreement. When the parties are ready to work together, they still need a separate contract. If you are unsure how these documents relate, our comparison of an MSA vs. NDA explains where each one fits.

Mutual NDA vs. Two One-Way NDAs

Occasionally parties ask whether they should sign two separate one-way NDAs instead of a single mutual one. A single mutual document is almost always cleaner. It keeps one term, one governing law, and one set of definitions, which avoids the awkward situation where two agreements conflict. Two one-way NDAs also double the negotiation surface. The main reason to split them is when the two exchanges are genuinely unrelated and the parties want different terms for each, which is rare. For a deeper look at the trade-offs between one-way and mutual structures, see our guide on unilateral vs. mutual nondisclosure agreements.

Related guides

• NDA Contract Template: How to Write a Non-Disclosure Agreement
• Non-Disclosure Agreement Consulting: Helping Businesses Protect IP
• B2B Non-Disclosure Agreement: Protecting Your Trade Secrets When Entering Partnerships
• What to Ask Before Signing a Non-Disclosure Agreement
• Legal Guide: Non-Disclosure Agreements for Incoming Employees

Generate Your Mutual NDA with Contractable

Writing a mutual NDA is manageable once you know the structure, but keeping every clause symmetric is where drafts go wrong. Contractable generates a customized mutual non-disclosure agreement in seconds, with matching definitions, a single agreed term, and two-way remedies built in, so both parties can share what they need to and move the conversation forward.