Understanding NDAs: What Every Startup Founder Should Know

IIf you're building a startup, you'll almost certainly need to share confidential information with co-founders, employees, partners, or investors before any deal is signed. The standard tool for protecting that information is the non-disclosure agreement, or NDA.

What an NDA actually does

At its core, an NDA does three things:

1. Defines what counts as confidential information

2. Restricts how the receiving party can use that information

3. Creates a legal remedy if those restrictions are breached

The strength of an NDA depends almost entirely on how precisely those three things are written. Generic NDAs pulled from templates often fail at the first step — they define confidential information so vaguely that proving a specific breach becomes difficult.

The clauses that actually matter

Definition of confidential information

A good NDA defines what's confidential in two ways: a general standard (anything marked confidential, or that a reasonable person would understand to be confidential) and specific carve-outs (publicly available information, independently developed material, information already known to the receiving party).

Term and duration

For most commercial information, two to five years is standard. For trade secrets, the obligation should last indefinitely or until the information becomes public through no fault of the receiving party.

Permitted uses

Spelling out what the receiving party can do with the information matters more than what they can't. If you're sharing financials to evaluate an investment, the permitted use is evaluating that specific investment — anything else is a breach.

Where NDAs fall short

An NDA gives you the right to sue. It does not, on its own, prevent the harm of disclosure.

In practice, by the time you find out about a breach and prove it in court, the damage is already done. NDAs are best used in combination with practical measures: limiting who sees what, watermarking documents, and asking sophisticated questions during due diligence.

For sensitive trade secrets, an NDA is the floor, not the ceiling. Consider whether the information genuinely needs to be shared, and whether less risky alternatives exist like staged disclosures or independent third-party verification.