When a real estate agent represents both the buyer and the seller in the same deal — known as dual agency — the total commission can run between 3.5% and 5.0% of the sale price, depending on the market. In Toronto, that means a £20,000 to £25,000 payout on a £500,000 home. But the bigger question isn’t what the agent earns — it’s what you lose when no one at the negotiating table is fully on your side.
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This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
Dual agency isn’t rare. A buyer finds a house they like, and their agent happens to be the listing agent. Or a seller agrees to let the buyer’s agent handle both sides to speed things up. The arrangement feels convenient. But the legal and financial trade-offs run deeper than most people realise. Recent changes under Ontario’s TRESA Phase 2 have shifted how these deals work in that province, and other parts of Canada are watching closely. Here’s what you actually need to know.
Understanding dual agency starts with one concept: fiduciary duty.
What I tend to notice is that most people hear “dual agency” and think it means the agent is working twice as hard for them. In reality, the agent is legally barred from working hard for either side. That’s the part that catches people off guard.
What Dual Agency Costs You — By the Numbers
The total commission in a dual-agency deal is usually the same as a standard deal — between 3.5% and 5.0% of the sale price — but the split changes. Instead of two agents splitting the pot, one agent or brokerage takes the full amount. Sellers often assume they’ll get a discount because the broker saves on the second agent’s split. Buyers assume the same. Neither should assume anything without negotiating it first.
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| City | Total Commission | Listing Side | Buyer Side |
|---|---|---|---|
| Toronto (GTA) | 4.0–5.0% | 2.0–2.5% | 2.0–2.5% |
| Vancouver | 3.5–4.5% | 7% on first $100k + 2.5% on balance | Similar tiered formula |
| Montreal | 4.0–5.0% | 2.0–2.5% | 2.0–2.5% |
| Calgary | 3.5–4.5% | 1.75–2.25% | 1.75–2.25% |
| Ottawa | 4.0–5.0% | 2.0–2.5% | 2.0–2.5% |
| Halifax | 4.0–5.0% | 2.0–2.5% | 2.0–2.5% |
The numbers above are the starting point, not the final word. Every rate is negotiable, and sellers have more leverage than they think. Interview three agents, compare their quotes, and push for a tiered structure — full rate up to a threshold, then a reduced rate above it. On a $1.2 million home, dropping the listing side from 2.5% to 1.5% saves $12,000. That’s not pocket change.
One more cost that’s easy to overlook: GST/HST. Commission is a taxable service, so the effective cost includes applicable sales tax. In Ontario, that’s 13% HST on top of the negotiated commission. A $20,000 commission actually costs $22,600 once HST is added.
Where Buyers and Sellers Get Tripped Up
Assuming Dual Agency Means a Discount
Many sellers walk into a dual-agency deal expecting the agent to take a cut because there’s no second agent to pay. But unless you negotiate that upfront, most agents will still charge the full commission. The buyer’s side of the commission doesn’t vanish — it just gets absorbed by the same brokerage. If you’re the seller, ask directly: “What’s the commission if you represent both sides?” If you’re the buyer, ask: “Will you reduce your commission since you’re collecting both sides?” The answer tells you everything.
Skipping the Buyer Representation Agreement
Under TRESA Phase 2, written buyer representation agreements are mandatory before showing properties in Ontario. That means the compensation your agent will receive — and who pays it — must be spelled out before you step through the door. A lot of buyers skip this or sign without reading. If you’ve signed a agreement that says your agent gets 2.5% from the seller, and the seller is only offering 2.0%, you could be on the hook for the difference. Read the numbers before you sign.
Confusing Dual Agency With Designated Representation
They sound similar but they’re not. Dual agency means one agent represents both sides and stays neutral. Designated representation means two agents from the same brokerage each represent one side exclusively — the brokerage supervises both, but each client gets full advocacy. Sellers and buyers who don’t know the difference often end up in a dual-agency situation when they could have had full representation. Ask your brokerage whether designated representation is available before you agree to dual agency.
Not Disclosing a Cash-Back Rebate to the Lender
Cash-back rebates from a buyer’s agent typically range from 0.25% to 1.0% of the purchase price — that’s $1,000 to $6,000 or more on a typical home. It sounds like free money. But it must be disclosed to your mortgage lender. Nondisclosure is mortgage fraud. Lenders view the rebate as a reduction in the effective purchase price, which can affect your loan-to-value ratio. Tell your broker or lender about it before closing, not after.
How Dual Agency Actually Works Under the New Rules
What Happens When One Agent Handles Both Sides
The process starts with disclosure. The agent must inform both buyer and seller in writing that they are acting as a dual agent. Both parties must sign a consent form. Once that’s signed, the agent’s role shifts from advocate to facilitator. They can’t advise either party on price, negotiation strategy, or terms. They can pass along offers and counteroffers, but they can’t recommend what to do. The buyer and seller are essentially on their own. If you’re the seller, your listing agreement should specify the commission structure for a dual-agency scenario. If you’re the buyer, your representation agreement should state the same. Both documents should be signed before any offers are written.
Designated Representation: The TRESA Phase 2 Alternative
Ontario’s TRESA Phase 2, fully in effect since 2024, introduced designated representation. This allows two agents from the same brokerage to represent buyer and seller in one transaction without triggering multiple representation. Each agent acts exclusively for their own client. The brokerage supervises both but doesn’t interfere. This is a cleaner option than dual agency because both parties get full advocacy. If you’re in Ontario and your broker offers designated representation, take it. If you’re in another province, ask your broker whether any similar mechanism exists. The trend is moving this way across Canada, and the debate over agent value is only accelerating the shift.
Negotiating Commission in a Dual-Agency Deal
You have more room to negotiate than most people think. Sellers can use a competitive interview approach — get quotes from three agents and ask the lowest to match or beat the others. For high-value properties, a tiered structure works well: full rate up to a threshold, then a reduced rate on the margin. Repeat business also gives you leverage. If you’re planning to use the same agent for your next purchase, that’s worth a 0.25% to 0.5% discount. And if the property is an easy sale — hot market, good condition, likely to sell quickly — the agent may agree to a reduced rate just to secure the listing.
What to Put in Writing Before You Agree
Before you enter a dual-agency arrangement, get everything in writing. The commission rate and how it’s split. What services are included — staging consultation, professional photography, video tour, open houses. The marketing plan for the property. The length of the listing agreement and whether you can cancel early. The agent’s recent sales record in your neighbourhood, including average days on market and sale-to-list price ratio. If the agent hesitates to put any of this in writing, that’s a red flag. Walk away.
Frequently Asked Questions About Dual Agency
Can I refuse dual agency as a buyer or seller? ▾
Does dual agency ever actually save me money? ▾
What happens if I’m self-represented and the other side has an agent? ▾
Is dual agency legal in every Canadian province? ▾
Can a dual agent tell me what the other party is thinking? ▾
What’s the difference between dual agency and double-ending? ▾
Where Canadian Dual Agency Rules Are Headed
The Competition Bureau is currently reviewing whether standard commission structures reduce competition in Canadian real estate. Ontario’s TRESA Phase 2 has already introduced designated representation, and other provinces are expected to follow similar paths. The direction is clear: more transparency, more written agreements, and fewer situations where one agent holds all the cards. If you’re planning to buy or sell in the next year, the most practical move is to understand the rules in your province before you sign anything. The days of a handshake deal and a 5% commission are winding down.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Why Some Canadian Provinces Are Seeing a Real Estate Boom While Others Struggle.
Sources and Further Reading
How the Remote Work Boom Is Driving Real Estate Prices in Unexpected Areas — A look at how shifting work patterns are reshaping where Canadians buy and sell property.
The Rise of Eco-Friendly Homes in Canada and What It Means for Future Buyers — Explores how green features are affecting property values and buyer preferences.
WealthNorth (2026). Real Estate Agent Commission Canada 2026. 🔗
Real Estate Magazine (2025). Ethical Dilemmas: The Real Cost of Dual Agency. 🔗
Deeded (2025). TRESA Changes Coming to Ontario Real Estate. 🔗
Storeys (2024). Ontario Real Estate TRESA Rules. 🔗
