NDA Template in Plain English: Free Non-Disclosure Agreement

Confidentiality terms that protect you without eighteen pages of boilerplate.

📅 Updated September 22, 2026⏱ 6 min read✅ Reviewed by LexAI Legal Team🗺️ Applies to: All States

Legal Disclaimer: This is a general mutual NDA template suited to everyday business discussions. For NDAs tied to a major transaction, a technology license, or significant trade secrets, have the final version reviewed by an attorney.

Mutual vs. Unilateral: Which Do You Need?

A unilateral NDA protects information flowing one direction only — you're sharing something sensitive, and the other party isn't. A mutual NDA protects both sides, appropriate whenever each party will reveal something confidential during the discussion — the template below is mutual, which covers the more common case and can be trivially adapted to one-way use.

The Clause Most Templates Get Wrong: Exclusions

An NDA's enforceability rests heavily on how precisely it defines confidential information — and just as importantly, what it excludes. Courts routinely refuse to enforce NDAs that are vague or overbroad. Standard, expected exclusions include information that was already known to the receiving party, becomes public through no fault of theirs, is independently developed without reference to the shared information, or is received legitimately from a third party. Skipping these exclusions doesn't make your NDA stronger — it makes it more likely to be challenged as unreasonable.

Mutual NDA Template

MUTUAL NON-DISCLOSURE AGREEMENT

This Mutual Non-Disclosure Agreement (“Agreement”) is entered into as of [DATE] between [PARTY A NAME] and [PARTY B NAME] (each a “Party,” together the “Parties”).

1. Purpose. The Parties wish to discuss [DESCRIBE PURPOSE, e.g., “a potential business partnership”] (the “Purpose”), during which each Party may disclose confidential information to the other.

2. Confidential Information. “Confidential Information” means any non-public information disclosed by either Party, whether written, oral, or observed, relating to the disclosing Party’s business, technology, or plans.

3. Exclusions. Confidential Information does not include information that: (a) was already known to the receiving Party without an obligation of confidentiality; (b) is or becomes publicly available through no fault of the receiving Party; (c) is independently developed without reference to the disclosing Party's Confidential Information; or (d) is rightfully received from a third party without breach of any confidentiality obligation.

4. Obligations. Each Party shall (a) use the other's Confidential Information solely for the Purpose, (b) not disclose it to third parties without prior written consent, and (c) protect it with at least the same degree of care it uses for its own confidential information, and no less than reasonable care.

5. Term. This Agreement's confidentiality obligations remain in effect for [NUMBER] years from the date of disclosure of the relevant Confidential Information.

6. Whistleblower Notice (18 U.S.C. § 1833(b)). Notwithstanding any other provision of this Agreement, an individual shall not be held criminally or civilly liable under any federal or state trade secret law for disclosing a trade secret that is made in confidence to a federal, state, or local government official, or to an attorney, solely for the purpose of reporting or investigating a suspected violation of law, or in a court filing made under seal.

7. Return of Materials. Upon request, each Party shall return or destroy the other's Confidential Information.

8. Governing Law. This Agreement is governed by the laws of the State of [STATE].

Signatures: _________________________ (Party A) Date: _________

_________________________ (Party B) Date: _________

The whistleblower notice clause (Section 6) is a federal requirement whenever an NDA covers trade secrets in an agreement with an employee, contractor, or consultant — leaving it out doesn't void the NDA, but it does forfeit enhanced damages in a later misappropriation suit against that person.

When a Short, Simple NDA Is Enough

For routine conversations — an early product demo, a casual partnership discussion — the template above is generally sufficient. Reach for a more heavily negotiated, attorney-drafted NDA when real trade secrets, a pending transaction, or significant IP are involved, since the stakes justify the extra precision.

Frequently Asked Questions

What's the difference between a mutual and a unilateral NDA?

A unilateral (one-way) NDA protects information flowing from only one party to the other — typical when a company shares information with a vendor who shares nothing sensitive back. A mutual NDA protects information both parties share with each other, common in partnership discussions, M&A due diligence, or any negotiation where both sides reveal sensitive details.

Can an NDA really last forever?

For ordinary business information, courts generally favor a fixed, reasonable term — commonly 1 to 5 years — over an indefinite obligation, and may refuse to enforce an unreasonably long or perpetual term. Genuine trade secrets are the exception: since trade secret protection itself has no expiration as long as the information stays secret, an NDA can reasonably require indefinite confidentiality specifically for that narrower category.

Do I legally have to include the whistleblower notice?

If the NDA is with an employee, contractor, or consultant and governs trade secrets or confidential information, yes — federal law requires it. Skipping it doesn't void the NDA, but it does cost the employer the ability to recover exemplary (double) damages and attorney's fees in a later trade secret misappropriation suit against that person, under 18 U.S.C. § 1833(b)(3)(C).

Is a verbal agreement to keep something confidential enforceable?

It can be, but it's far harder to prove and enforce than a written NDA, since courts need to determine the exact scope of what was agreed. If confidentiality genuinely matters, put it in writing before, not after, sharing the sensitive information.