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Non-Disclosure Agreements for Business Buyers in Ontario

Asked to sign an NDA before seeing a business's financials? Learn what it restricts, how privacy law fits in and which terms a buyer should negotiate.

Buying & Selling a Business5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • An NDA lets you see sensitive information about a business, in exchange for strict limits on how you use and share it.
  • Federal privacy law lets parties to a prospective deal share personal information without consent if they have an agreement with specific protections, which is why NDAs usually contain them.
  • Pay attention to how confidential information is defined, how long the NDA lasts and what you must return or destroy if the deal does not proceed.
  • Have a lawyer read the NDA before you sign, especially if it includes extra restrictions beyond confidentiality.

You have found a business you might buy, and the seller will not show you the financial statements, customer list or contracts until you sign a non-disclosure agreement. That is normal. Sellers worry about their staff, customers and competitors finding out that the business is for sale, and about sensitive information leaking.

For you as the buyer, an NDA is also a contract with consequences. This article explains what it generally restricts, how privacy law fits in and which terms are worth negotiating before you receive anything.

What an NDA does in a business sale

An NDA, also called a confidentiality agreement, is a contract in which you promise to keep the seller's information confidential and to use it only to evaluate the purchase. Typically it covers the financial records, customer and supplier details, contracts, employee information and the fact that the business is for sale at all.

Many NDAs are signed before a letter of intent, so they are one of the first documents in a deal. Because you may be handed a lot of sensitive information, the seller often wants the NDA to be firm. Your goal is to make sure it is firm but fair, and that you can actually comply with it.

Why privacy law matters

A business's records often include personal information about customers and employees. Under PIPEDA s. 7.2(1), the parties to a prospective business transaction may use and disclose personal information without consent if they have an agreement requiring the recipient to use it solely for purposes related to the transaction, protect it with appropriate safeguards, and return or destroy it if the deal does not proceed. The information must also be necessary to decide whether to proceed and, if so, to complete the deal. This is why NDAs usually contain these terms.

If the deal closes, the information must be needed to carry on the business, and one party must notify the individuals within a reasonable time after completion. Each organization must also comply with the agreement's terms. The rule does not cover deals whose main purpose or result is buying, selling or leasing personal information itself.

In practice, a seller who wants to share personal information without getting consent will usually want the NDA to include proper privacy terms, and you may be expected to follow them. Ask what personal information you will really need to see at each stage. Sometimes summary or anonymized data is enough early on.

Terms to negotiate

TermWhat to look forBuyer's concern
Definition of confidential informationIs it narrow and clear, or does it cover everything?Information you already had or that is public should not be caught
Permitted useUse only to evaluate and complete the purchaseMake sure your advisors, lenders and partners may see it, under the same duties
Return or destroyWhat happens to copies if the deal endsAllow for copies kept by law or in routine backups
LengthHow long the duties lastAn open-ended duty is hard to manage
RemediesInjunctions, damages, costsAvoid unreasonable penalties
Extra restrictionsNon-solicit of staff or customers, or a non-competeThese go beyond confidentiality and need careful review

Return-or-destroy and safeguard terms are not just a seller preference. They track what privacy law expects when personal information is shared in a prospective deal. Expect them, and make sure you can honour them.

Watch for restrictions that go beyond secrecy

Some NDAs quietly include a promise not to compete, not to hire the seller's staff or not to approach customers. These are separate commitments with their own risks. Employers are prohibited by the Employment Standards Act, 2000 from entering into employment contracts or other agreements that contain a non-compete, but whether that rule applies to a document between a prospective buyer and a seller depends on the relationship and the facts. A lawyer can tell you.

What to do before you sign

Slow down for a moment, even if the seller is pressing. Once you have signed and received information, the duties apply whether or not you go ahead with the purchase.

Frequently asked questions

Do I have to sign an NDA before seeing a business's financials?

You are not legally forced to, but most sellers will not share sensitive information without one. If you do not want to sign the version offered, ask for changes rather than refusing outright.

Why does the NDA mention returning or destroying information?

Privacy law lets parties to a prospective deal share personal information without consent if their agreement requires the recipient to use it only for the transaction, protect it and return or destroy it if the deal does not proceed. NDAs include these terms so that the sharing is allowed.

What happens to personal information if the deal closes?

The information must be needed to carry on the business, and one party must notify the individuals within a reasonable time after completion. Ask your lawyer who will handle that notice.

Can the NDA stop me from buying a competing business?

Only if it is written that way, which is why wording matters. A broad restriction on dealing with others may be hard to live with, so negotiate it or get advice before signing.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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