The Irrevocable Period in an Ontario Offer: What Buyers and Sellers Need to Know

When you make an offer to purchase a home in Ontario, you are not handing the seller an open-ended invitation. Every offer carries an irrevocable period — a window of time during which the offer cannot be withdrawn by the person who made it. Understanding how this clause works can protect you from costly mistakes whether you are buying or selling.

The irrevocable period Ontario offer rules are straightforward once you know what to look for, but the practical consequences — an offer that dies without warning, a counter-offer that restarts the clock, or a bully offer that pressures you into a snap decision — catch many buyers and sellers off guard. This article explains what the clause actually does, how to use it strategically, and when you need a lawyer in your corner.

What Is the Irrevocable Period?

The irrevocable period is a deadline written directly into every Agreement of Purchase and Sale in Ontario (the standard form published by the Ontario Real Estate Association is widely used). It states the date and time by which the party receiving the offer must accept, reject, or counter-offer.

Until that deadline passes, the party who made the offer cannot legally revoke it. In simple terms:

• Buyer makes an offer → the seller has until the irrevocable date and time to respond.
• Seller counter-offers → the buyer now has until the new irrevocable date and time to respond.

The irrevocable clause is not the same as a condition. A condition (such as a financing condition or home inspection condition) is a requirement that must be satisfied after the offer is accepted. The irrevocable period exists before acceptance — it governs the negotiation window itself.

How the Date and Time Are Set

The parties (typically through their agents) choose the irrevocable date and time when drafting the offer. There is no legislated minimum or maximum in Ontario — it is entirely a matter of negotiation and practical context.

Short Irrevocable Periods

A short window (a few hours, or same-day) puts pressure on the other side to decide quickly. Buyers sometimes use this in competitive markets to prevent the seller from shopping the offer around or waiting for other bids. Sellers and their agents may also set tight deadlines in a counter-offer to maintain momentum.

The risk: the other party may simply not have enough time to consult their lawyer, review the terms carefully, or arrange financing pre-approval confirmation. A rushed decision can lead to a deal that unravels later.

Longer Irrevocable Periods

A longer window (24–72 hours or more) gives the receiving party time to reflect, get legal advice, and respond thoughtfully. In slower markets or on complex properties, buyers often benefit from the breathing room. Sellers may prefer more time if they are expecting competing offers.

As a general principle, no party should sign any offer to purchase without first having a lawyer review it — regardless of how the irrevocable period is set.

What Happens When the Irrevocable Period Expires?

If the receiving party does not respond — accept, reject, or counter — before the irrevocable deadline, the offer dies automatically. It does not linger. The buyer is released from any obligation, and the seller cannot later try to accept a lapsed offer and claim a binding contract was formed.

This matters practically: if a buyer's offer expires while the seller is deliberating, the buyer is free to make an offer on another property. The seller who waited too long has lost the deal and must start fresh.

Can a Buyer Revoke an Offer Before It Expires?

In Ontario, the legal position is nuanced. The irrevocable clause is intended to bind the offeror (the buyer, in a standard scenario) for the duration of the period. However, real property law and contract law in Ontario have recognized that revocation before expiry is a complex area. In practice, once the other party has formally accepted the offer before the deadline, a binding contract is formed and revocation is not available.

If you are a buyer who needs to withdraw an offer before expiry — for instance because your circumstances have changed — you should speak with a lawyer immediately. Do not assume you can simply walk away without consequences.

Counter-Offers and How They Restart the Clock

When a seller counter-offers rather than accepting or rejecting outright, the original offer is effectively terminated. The counter-offer is a new offer — with its own irrevocable period — now running against the buyer.

Practically, this means:

1. Buyer submits offer with irrevocable date of 9:00 p.m. tonight.
2. Seller counter-offers at 7:00 p.m. with a new irrevocable of 11:00 p.m.
3. The buyer's original offer no longer exists. If the buyer does not respond to the counter by 11:00 p.m., the counter-offer dies too.

Each round of negotiation resets the clock. Keeping track of which version of the offer is live, and what the current deadline is, is one reason to have a lawyer involved throughout the transaction — not just at closing.

Bully Offers and Short Irrevocable Windows

A bully offer (also called a pre-emptive offer) arrives before a seller's scheduled offer-presentation date and typically carries a very short irrevocable period — sometimes just a few hours. The intent is to force the seller to make a decision before other buyers have a chance to compete.

From the seller's perspective, a short irrevocable window on a bully offer creates real pressure:

• Accept and potentially miss a higher bid from a scheduled presentation.
• Let it expire and risk that the bully buyer moves on.
• Counter-offer with revised terms.

Sellers dealing with a bully offer should contact their lawyer immediately. The short window is deliberate — the buyer is betting the seller will not have time to think carefully. Having legal counsel on speed-dial before listing your home helps you respond to these situations calmly.

The Seller's Perspective: Using the Irrevocable Period Strategically

Sellers are not passive participants in the irrevocable period. When counter-offering, the seller controls the length of the new window. Setting a reasonable but firm deadline:

• Keeps the negotiation moving and prevents buyers from indefinitely stalling.
• Signals that the seller is serious without appearing desperate.
• Reduces the risk that the buyer shops the counter-offer terms to competing properties.

Sellers should also be aware that if they allow an offer to expire without responding, they cannot revive it unilaterally. The buyer may have moved on, and there is no mechanism to force the buyer back to the table.

Frequently asked questions