One-way vs mutual NDA: which do you need?

In a one-way (or unilateral) NDA, one party shares confidential information and the other agrees to protect it. Use it when only you disclose — for example, pitching an idea to a contractor, showing numbers to a potential investor, or handing work to a freelancer.

In a mutual (or bilateral) NDA, both parties share and protect each other's information. Use it for partnerships, joint ventures, or any conversation where both sides will reveal something sensitive — it's the fairer choice when the exchange goes both ways.

Whichever direction you pick, a solid NDA covers the same essentials:

• The parties to the agreement
• A clear definition of what counts as “confidential information”
• The purpose — why the information is being shared
• The term — how long the confidentiality obligation lasts
• Exclusions — public info, or what the other side already knew or developed independently
• The governing law and signature blocks

Most NDAs set a term of one to five years. Genuine trade secrets can be protected indefinitely. Match the term to how sensitive and long-lived the information really is — an unreasonably long term can make an NDA harder to enforce.

Yes — once both parties sign, a clear and reasonable NDA is binding in most jurisdictions, and usually doesn't need to be notarized. This is general information, not legal advice: for high-stakes or unusual deals, have a qualified lawyer review it.