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Transferring Contracts, Leases and Permits in an Ontario Asset Sale

See which contracts, leases and permits may need consent in an Ontario asset sale, what moves by law, and what to do if a third party refuses consent.

Buying & Selling a Business4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • In an asset sale, contracts, leases and permits generally need to be assigned, replaced or re-issued, and whether consent is needed depends on each document's own wording.
  • Some obligations follow the business by law, including employee service and WSIB arrears.
  • Planning for refused consent before closing is safer than discovering a problem on closing day.

When a business is sold by assets, the buyer is not taking over the company. It is taking selected assets, and that includes the right to step into customer contracts, the premises lease and the permits that let the business operate.

Whether a third party must agree depends mostly on the wording of each document and on who issues each permit. This article explains how to approach the list and what usually happens if someone says no.

Why an asset sale needs a contract-by-contract approach

In an asset sale the seller's corporation remains the contracting party until a contract is actually assigned. Whether consent is needed turns on the contract's own terms and general contract law, so the right place to start is reading each agreement. Many contracts say they cannot be assigned without the other party's written consent, and some are silent.

By contrast, in a share sale the corporation stays the contracting party, but change-of-control clauses can still require consent. If consent from many counterparties looks difficult, that can be a reason to consider a different structure.

Customer and supplier contracts

A common approach is a consent and assignment letter signed by the counterparty, or a new contract with the buyer. The asset purchase agreement should list the contracts being taken over and say what happens if one cannot be transferred.

Commercial leases and permits

For the premises lease, read the assignment and subletting clause first. Leases often require the landlord's consent and may let the landlord ask for financial information about the buyer, a guarantee or a lease amendment. Whether a landlord may refuse consent, and on what grounds, depends on the lease wording and the law, so have a lawyer review the lease before you commit to a closing date.

Licences and permits are different again. Some can be transferred on application, some must be applied for fresh by the buyer, and some cannot be transferred at all. The answer depends on the body that issued the permit and the type of permit, so contact the issuing office early and ask what it requires and how long it takes.

What moves by law, regardless of the contracts

ItemWhat to know
EmployeesIf a business is sold or transferred and an employee keeps working for the new owner, employment is not ended and service with the seller counts for vacation, notice and severance. This also applies when only part of a business is sold.
Employee rehire gapPrior service does not carry over if the employee is rehired more than 13 weeks after the earlier of their last day with the seller or the day of the sale.
WSIB arrearsA person who acquires all or part of an employer's business is liable for amounts the employer owed under the Act immediately before the disposition. A purchase certificate, valid for 30 days, waives that liability if the seller's account is in good standing.
GST/HSTIf the buyer acquires all or substantially all of the property needed to carry on the business, a joint election can mean GST/HST does not apply, and CRA generally reads that as 90% or more.
Land transfer taxA buyer who acquires land pays Ontario land transfer tax when the transaction closes.

The GST/HST election is made on Form GST44 completed by seller and buyer. If the seller is a registrant, the buyer must also be a registrant for the election to apply. GST/HST still applies to taxable services the seller will provide, taxable leases or licences, and taxable sales of real property to a buyer who is not a registrant.

If consent is refused, and what to do next

If a counterparty refuses, the usual options are to negotiate (sometimes by offering the buyer's financial strength or a guarantee), replace the contract with a new one, lower the price, delay closing until the issue is resolved, or make the deal conditional on the key consents. The agreement can also exclude a contract and provide for a price adjustment.

Frequently asked questions

Do I always need consent to assign a customer contract?

No, it depends on what the contract says and on general contract law. Read the assignment and change-of-control clauses, and if the contract is unclear, a lawyer can confirm.

Does the landlord have to approve a lease assignment?

It depends on the lease wording and the law that applies. Many leases require consent and set conditions, so have the lease reviewed before the deal is signed.

Do employees have to be rehired by the buyer?

If an employee keeps working for the new owner, the employment is not ended and prior service carries over. Service does not carry over if the employee is rehired more than 13 weeks after the earlier of their last day with the seller or the day of the sale.

How can a buyer protect itself against the seller's WSIB debts?

A purchase certificate, which the WSIB issues on request if the seller's account is in good standing, waives the buyer's liability and is valid for 30 days from its issue date.

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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