\"Time Is of the Essence\" Clauses in Ontario Contracts: What They Actually Do

Real estate agreements almost always contain the phrase "time is of the essence." So do many commercial contracts, construction agreements, and settlement documents. Most people sign past it without a second thought — until a closing date, delivery date, or payment date is missed, and suddenly that one phrase decides who has the stronger legal position.

Here’s what a time is of the essence clause actually changes, and what happens to deadlines when a contract doesn’t have one.

The Default Rule: Deadlines Are Usually Not Fatal

Without a time-is-of-the-essence clause, Ontario courts generally treat contractual deadlines as important but not automatically fatal to the deal. If one party is late, the other side typically can’t simply walk away and call the contract at an end — their remedy is usually limited to damages for the delay (if the delay actually caused a loss), not termination.

This surprises a lot of people. A missed date feels like a clear breach, but without the clause, courts look at whether the delay was significant enough to go to the heart of the bargain before allowing the other party to escape their own obligations.

What Changes When Time Is Made "of the Essence"

Making time of the essence changes the legal consequence of a missed deadline dramatically. Once the clause is in effect:

• A deadline becomes a strict, fundamental term of the contract — not just an administrative target
• Missing it, even by a short margin, can be treated as a breach going to the root of the contract
• The innocent party generally gains the right to treat the contract as at an end and pursue damages, rather than being stuck waiting for late performance
• Courts are far less forgiving of "close enough" performance once the clause applies

This is exactly why real estate purchase agreements almost universally include the clause: a home closing date has knock-on effects (financing, moving trucks, a chain of related transactions) that make "close enough" unworkable for either side.

Common Situations Where This Comes Up

Real Estate Closings

A late closing on a home purchase, with time of the essence in the agreement, can give the other party the right to terminate and potentially keep or claim against a deposit, sue for damages, or both — depending on which side caused the delay and what the agreement says.

Commercial Delivery and Milestone Dates

Supply and construction contracts often make key delivery or milestone dates "of the essence" specifically to prevent a party from treating soft deadlines as flexible once money and downstream obligations are riding on them.

Payment Deadlines

Less commonly, payment dates themselves are made time-of-the-essence, turning a late payment into a potential default that can trigger broader consequences under the contract (sometimes combined with an acceleration clause).

Can the Clause Be Waived or Relaxed Later?

Yes — and this is where many disputes actually arise. If a party with the benefit of a time-is-of-the-essence clause accepts late performance, grants an extension, or otherwise behaves as though the deadline isn’t strict, they can lose the right to insist on strict compliance going forward, at least without clearly re-imposing the deadline. Anyone extending a deadline "as a courtesy" should do so in writing and be explicit about whether time remains of the essence.

What to Do If a Deadline Has Been Missed

1. Check the exact wording of the contract — does it say time is of the essence, and does that language cover the specific deadline that was missed?
2. Determine whether anyone’s conduct (extensions, continued dealing, silence) may have relaxed the clause.
3. Assess what remedy is actually available: termination, damages, or both.
4. Act promptly. Waiting to decide can itself look like an implied extension, and Ontario’s limitation period for a related legal claim starts running from when the claim is discovered — not from whenever you get around to addressing it.
5. Get advice before declaring the contract at an end. Terminating without a proper legal basis can itself expose you to a breach claim.

Frequently asked questions