Glossary
Mutual NDA
A mutual NDA is a confidentiality agreement where both sides share information and both promise to keep it private.
Last updated 26 October 2026
A mutual NDA, also called a two-way NDA, binds both parties. Each side may disclose plans, pricing or code, and each side must keep what it learns private and use it only for the stated purpose. It is the usual first document before a pitch, a partnership or a build where both sides will open the books.
If only one side will disclose, a one-way NDA is the tighter shape. Signing a mutual paper when only the client will share secrets is not usually a problem. Signing a one-way paper when you will also share a process, a rate card or a deck is how you give without getting.
The rest of the paper is the same job as any NDA: what counts as confidential, the exceptions, how long the duty lasts, and who inside each business may see it. A purpose line (“to decide whether to work together on a spring campaign”) is what stops the information being used for a competing pitch.
Mutual NDAs are often short. Length comes from the definition, the exclusions, the duration and the list of who can see the information, not from boilerplate. Two to four pages is common. A twenty-page mutual NDA is usually a one-way paper with extra adjectives.
The later services agreement should either repeat the duty or say the NDA still applies. If the later paper is silent, keep the signed NDA on file. Confidentiality in the main contract is the same job once the work starts. Do not assume the NDA dies when the statement of work is signed unless the later paper says so.
A worked example
A studio and a retailer sign a mutual NDA so both can share unreleased product shots and campaign budgets before agreeing a statement of work. The studio sees the unreleased range; the retailer sees the studio’s day rates and process. When the retailer picks another shop, both sides delete the files and keep the NDA.
How it shows up in a contract
Sample wording · our own drafting
Each party may disclose Confidential Information to the other for the Purpose. Each Receiving Party will keep that information confidential, use it only for the Purpose, and disclose it only to personnel who need to know it and are bound by equivalent duties. These obligations are mutual and last for [3] years after this agreement ends.
In Plain English
Both sides may share private information for this conversation. Each side keeps what it learns secret, uses it only for this, and shares it only with people who need it and who are also bound. The duty goes both ways and lasts three years after you stop talking.
Common mistakes
- Using a one-way NDA when both sides will share secrets.
- Leaving the purpose blank on a mutual paper, so either side can reuse what it learned.
- Signing a new services agreement that silently replaces the NDA with a weaker clause.
- Forgetting that “mutual” still needs exceptions, a term, and a return-or-delete line.
Related
The legal wording governsLast reviewed 26 October 2026Pending lawyer review