What Is a Confidentiality Clause?

Definition: Binds one or more parties to non-disclosure of certain secretive information.

Also called a non-disclosure clause, or an NDA when it stands alone as its own agreement.

What this clause actually does

A confidentiality clause defines a category of information and then restricts what the receiving party may do with it: usually no disclosure to third parties, no use outside a stated purpose, an obligation to protect it, a duty to return or destroy it, and a duty to give notice if disclosure is compelled.

The promise itself is rarely the interesting part. Three mechanical elements decide how much the clause actually costs you:

1. The definition — what counts as confidential information.
2. The carve-outs — what is excluded from that definition.
3. The duration — how long the obligation runs, and from when.

Change any one of those and the same clause goes from routine to onerous without a single word of the promise changing.

Where it bites

• A definition with no edges. “All information disclosed by the Disclosing Party, whether or not marked confidential, in any form, whether disclosed before or after the date of this agreement” sweeps in things that are public, things you already knew, and things you will later work out for yourself. You cannot comply with an obligation whose boundary you cannot identify.
• Missing carve-outs. Without them you have no answer when the other side points at information that was already public or that you developed independently.
• Perpetual duration on ordinary business information. An indefinite obligation over routine commercial detail is unauditable and, years later, impossible to manage sensibly.
• No residual-knowledge provision. Without one, the clause arguably stops you using general skill, experience and professional judgement you built while doing the work — which for a consultant or contractor is the product you sell.
• One-way drafting in a two-way relationship. If you are both sharing information, both sides should be bound.
• Bolted-on remedies. Liquidated damages per breach, automatic injunctive relief, and a one-way fee-shifting clause together can turn a small slip into a very large exposure. Those are three separate concessions.
• Downstream policing duties. You may be made responsible for your own employees, contractors and advisers — which is reasonable in principle, but check whether you can actually bind them on equivalent terms.
• It quietly becomes a non-compete. A confidentiality clause drafted to stop you working in the same field is doing a different job than its heading suggests.

The five carve-outs almost every well-drafted version has

If the clause you are reading is missing these, that absence is the finding:

• Information that is or becomes public, other than through your breach.
• Information you already had before it was disclosed to you.
• Information you receive from a third party who was not under a confidentiality obligation.
• Information you develop independently, without using theirs.
• Disclosure required by law, a court, or a regulator — usually with a duty to give notice first, where you are permitted to, so they can object.

What to negotiate

• Make it mutual if information flows both ways.
• Require designation — marked as confidential in writing, or falling within a defined list of categories. That gives both sides something checkable.
• Add the five carve-outs above.
• Set a finite term for ordinary information — a stated number of years from disclosure or from the end of the agreement — and reserve any indefinite tail for information identified as a trade secret.
• Add a residual-knowledge and general-skills provision so you can keep practising your profession.
• Make the permitted purpose broad enough to actually perform the work, including internal analysis and record-keeping.
• Allow need-to-know disclosure to your employees, contractors and professional advisers on equivalent terms.
• Return-or-destroy with realistic carve-outs for automated backups and records you are required to keep.
• Resist automatic liquidated damages. Actual loss plus the ability to seek urgent relief is the balanced position.

What a reasonable version looks like

Mutual; a defined category or a marking requirement; the five standard carve-outs; a finite term for ordinary information with a longer tail only for identified trade secrets; permitted disclosure to advisers and in response to legal process with notice where permitted; return or destruction with sensible exceptions; and remedies limited to actual loss plus urgent relief.

What to push back on hardest

• “All information of any kind, in perpetuity” with no carve-outs and no marking requirement.
• A bar on disclosing the existence or terms of the agreement to your own lawyer, accountant or insurer.
• A clause that functions as a restraint on working in your field.
• Uncapped liquidated damages per breach.
• One-way injunctive relief and one-way legal costs.
• An obligation to guarantee the conduct of people you have no contract with.

Questions worth asking before you sign

• What exactly is confidential, and does it have to be marked?
• How long does the obligation last, and from when?
• Can I keep using the general skills and know-how I develop?
• Can I show this to my lawyer, accountant or insurer?
• What happens if a court or regulator orders me to disclose?
• Is it mutual? If not, why not?
• What are the remedies, and is there a fixed sum per breach?

Related clauses

• Non-disparagement clause
• Survival clause
• Non-compete clause

Not legal advice. What's My Contract is not a law firm, and this page is general information about how a clause of this type is usually written — not advice about your contract, and not a statement of the law in any particular place. How a clause is read, and whether it can be relied on, depends on where you are, what the rest of the agreement says, and facts a general explainer cannot know. Before you sign, refuse, or act on any clause, have a lawyer licensed in your jurisdiction read your actual document.