Definition
A non-disclosure agreement (NDA) is a contract in which one or both parties agree to keep certain shared information confidential and use it only for an agreed purpose. Clients often ask providers to sign one before sharing project details, pricing, or customer data, sometimes before a quote can even be prepared.
Also called: NDA, Confidentiality agreement
Non-disclosure agreement in practice
NDAs can cover invoices too. If an NDA bars you from naming the client or the project, keep invoice descriptions generic and avoid listing the client in public portfolios or case studies without permission.
Frequently Asked Questions
Should I sign an NDA before sending a quote?
It is common and usually reasonable. Read it first: check how long it lasts, what counts as confidential, and that it does not restrict your normal business beyond the project.
What is the difference between a mutual and a one-way NDA?
A one-way NDA protects only the information one party shares, usually the client. A mutual NDA protects both sides, which suits projects where you also share your own methods, pricing, or tools. Enforceability and terms vary by country and state, so get legal advice for high-stakes agreements.
Related terms
- Master services agreement A master services agreement (MSA) is a contract that sets the general terms for an ongoing relationship between a client and a service provider, such as payment terms, confidentiality, liability, and intellectual property.
- Quote A quote is a document that offers a client a fixed price for specific goods or services before work begins.
- Scope of work A scope of work is a written description of exactly what a project includes: the deliverables, tasks, timeline, assumptions, and exclusions.
This page is for general information only and is not legal, tax, or financial advice. Rules change and vary by location, so consult a qualified lawyer or accountant about your situation.