MSA, SOW, and NDA: How to Build a Contractual Framework for Working with Corporate Clients

As long as an IT company works with small projects, a single agreement is usually sufficient. It sets out the cost of the work, deadlines, payment procedures, and other terms of cooperation.

The situation changes when large companies appear among its clients. Instead of the usual agreement, the customer sends several documents at once: an NDA, an MSA, an SOW, and sometimes additional agreements. For a team dealing with corporate procurement for the first time, such a system may seem unnecessarily complicated.

In fact, each of these documents performs its own function. Together, they form a contractual architecture that makes it possible to launch new projects without renegotiating all the terms of cooperation.

Let us examine why MSAs, SOWs, and NDAs are needed and why this particular model is considered the standard when working with corporate clients.

Why a Single Agreement Is No Longer Sufficient

Let us imagine a company that has been supporting the same corporate client for several years. During this time, new projects emerge, teams change, the scope of work expands, and additional services are launched. If a new comprehensive agreement is signed each time, the parties will have to renegotiate liability, payment procedures, the transfer of intellectual property rights, warranties, and dozens of other terms.

In long-term cooperation, this approach quickly becomes inefficient.

That is why, in international practice, contractual relationships are usually divided into several interconnected documents. Some define the general rules of cooperation, others describe a specific project, and still others regulate confidentiality matters.

How the Contractual System Works

In most B2B projects, the documents are used in the following sequence:

The general terms of cooperation are agreed upon once. After that, for each new project, it is sufficient to prepare a separate Statement of Work without reviewing the entire agreement again.

What Each Document Regulates

NDA (Non-Disclosure Agreement) is signed at the negotiation stage. Its purpose is to define what information is considered confidential and how the parties are required to protect it. At the same time, an NDA does not regulate the commercial terms of cooperation.

MSA (Master Service Agreement) becomes the basis for long-term cooperation. It sets out the parties’ liability, payment procedures, the transfer of intellectual property rights, warranties, limitations of liability, and other fundamental terms. The project itself is usually not described in the MSA.

SOW (Statement of Work) supplements the MSA. It is here that the scope of work, deadlines, cost, team composition, acceptance criteria, and other parameters of a specific project are specified.

Simply put, the MSA answers the question “how do we work,” while the SOW answers “what are we doing within this project?”

When This Model Is Truly Necessary

The use of an MSA and an SOW is not always justified. If a company carries out a one-time project or works with a client only once, a conventional agreement is usually sufficient.

However, the contractual system becomes especially useful if the company:

• works with corporate customers
• supports clients over a long period of time
• regularly launches new projects
• provides several services to one client
• operates in the international market

In such cases, separating the documents makes it possible to significantly reduce the time required to approve new projects and make cooperation more predictable for both parties.