NDA agreements explained in plain language

Non-disclosure agreements are among the most commonly signed legal documents. You'll encounter them before job interviews, client projects, partnership discussions, and investment meetings. Most people sign them without reading past the first paragraph.

Here's what an NDA actually says — and what to watch for.

What an NDA does

An NDA creates a legal obligation to keep certain information confidential. It defines what information is covered, how long you must keep it secret, and what happens if you breach the agreement. That's it — in theory, it's simple.

Mutual vs. one-way NDAs

A one-way NDA protects only one party's information. You receive confidential information and promise not to share it. A mutual NDA protects both sides — you both share information and both promise confidentiality. If you're sharing information too, insist on a mutual NDA.

What counts as "confidential"?

This is where most NDAs get tricky. Good NDAs clearly define what's confidential — specific documents, trade secrets, customer lists, financial data. Bad NDAs define confidential information so broadly that virtually anything you learn could be covered. Watch for language like "any information disclosed verbally or in writing" without carve-outs for publicly available information.

Duration matters

How long does the NDA last? Some NDAs expire after 1-2 years. Others last indefinitely. For most business discussions, 2-3 years is reasonable. For genuine trade secrets, longer periods make sense. But an indefinite NDA for a preliminary business conversation is excessive.

The "residuals" clause

Some NDAs include a residuals clause that lets you use "general knowledge, skills, and experience" gained during the relationship. This is important — without it, you might technically be barred from using anything you learned, even general industry knowledge.

What happens if you breach?

Most NDAs specify remedies for breach — typically injunctive relief (a court order to stop the disclosure) and damages. Check whether the NDA includes liquidated damages (a fixed penalty amount) or if damages are unlimited. Also look for indemnification clauses that could make you liable for legal fees.

When to push back

It's perfectly acceptable to negotiate an NDA. Narrow overly broad definitions, set reasonable time limits, add carve-outs for publicly available information, and make sure obligations are mutual if both parties are sharing information.