Ontario · updated August 2026

Cash-Back Mortgages and Realtor Rebates: Which One Actually Puts Money in Your Hand

A cash-back mortgage hands you a lump sum when your mortgage funds and charges you for it through a higher interest rate, so it is a loan with a different name, not a gift. A realtor rebate hands you part of a commission the seller is already paying, and it costs you nothing in rate. Most first-time buyers who run the numbers end up chasing the rebate and treating the cash back as an emergency tool. Below is the arithmetic, the timing traps, and the one situation where a cash back genuinely wins.

What a cash-back mortgage actually is

A cash-back mortgage is an ordinary mortgage with a cheque attached. The lender advances you a percentage of the mortgage amount (commonly 1%, 2% or 3%) and in exchange charges a rate above what you would otherwise get. Funding is the day your lender sends the mortgage money to your lawyer, usually the closing day itself.

The big banks and the monoline lenders (mortgage-only lenders that sell through brokers rather than branches) price these differently, and the difference matters more than the headline number.

What the rate premium costs you

On monoline pricing, a percentage cash back costs roughly 0.25 percentage points of rate for every 1% of cash back. So 3% cash back costs about 0.70 points on your rate. That sounds small. Spread across a mortgage balance for a full five-year term, it is not.

Here is the comparison on a $600,000 mortgage, 30-year amortization (amortization is the total number of years scheduled to pay the mortgage to zero), a base rate of 4.04%, and a five-year term. Cost is measured honestly: every payment you make over the five years, plus the balance still owing at the end, minus what you borrowed.

Read the 3% row carefully. You receive $18,000 once, and you pay about $20,369 for it across the term. The dollar gap is modest, but the shape is the problem: the cash lands on one single day, and the premium comes out of your account every month for five years, $243 a month in this example. Note also that the smaller cash back is not proportionally kinder. Both rows land at roughly the same cost-to-cash ratio, so taking less does not make it cheaper per dollar.

Those figures assume the rates and structure above. Change the term, the amortization or the rate spread your broker is quoting and the answer moves, which is exactly what the calculator is for.

There is also a hard ceiling on the product. Around 3% cash back is the practical maximum on a purchase. The 5% products exist, but they are priced close to posted rates, and at that spread the buyer reliably loses money.

The fine print that decides it

Flat promotions cannot pay your closing costs

There are two completely different things sold as cash back, and confusing them is the most expensive mistake in this guide.

• Flat bank promotions. Through July and August 2026 these ran roughly $2,000 to $3,000 on a $500,000 to $749,000 mortgage at normal discounted rates. The catch: they pay out 6 to 8 weeks after funding. That money physically cannot cover your closing day, because it does not exist yet.
• Percentage cash backs. These are advanced at funding, through your lawyer, so the money is on the table on closing day. This is the only version that solves a closing-day cash shortfall, and it is the version that carries the rate premium.

If a shortfall on closing day is the problem you are trying to solve, work out the exact number first. Our cash to close guide walks through every line item that has to be funded before the keys change hands.

The clawback

Every cash back is clawed back pro-rata if you break the mortgage before the term ends. Break at year three of a five-year term and you repay roughly the unused two-fifths, on top of the normal prepayment penalty. A cash back quietly locks you in, so if there is any real chance you will sell, refinance, or move lenders mid-term, price that risk in before you sign.

It can never be your down payment

Canada's banking regulator (OSFI, through guidelines B-20 and B-21) forbids counting any lender cash back toward the minimum down payment. There is no workaround and no lender who will quietly allow it. Using it to pay closing costs is accepted and routine. Using it to top up a short down payment is not.

The realtor rebate: the same money, no rate cost

In the GTA the seller normally pays the buyer-side commission, typically 2.5% of the purchase price. As the buyer you do not write that cheque, but you also do not have to let all of it stay with the brokerage. Rebate brokerages return a share of it to you, and realistically that lands at 1.0% to 1.5% of the price.

On a $650,000 purchase, 1.0% to 1.5% is $6,500 to $9,750: a similar order of magnitude to the 3% cash back above, except the rebate costs nothing in rate, adds nothing to your monthly payment, and is never clawed back. On a home you live in it is not taxable income either, because it is treated as a reduction in what you paid rather than earnings. When a rebate is available, it is simply better money.

The timing catch

Most rebate brokerages pay by cheque one to two weeks after closing. Only some will credit it on closing day, and only if the promise is in writing before you start looking at homes. So a rebate is excellent at rebuilding your savings and poor at solving a cash crunch on the closing date itself. Ask the question directly and early: is this credited on closing, or paid after, and is that in the agreement.

Keep the rebate out of the purchase agreement

This is the detail people get wrong. A commission rebate belongs in your buyer representation agreement, the contract between you and your own brokerage. It must not be written into the agreement of purchase and sale, the contract between you and the seller. A credit written into the purchase agreement reduces the lending value of the property in the lender's eyes, which can shrink your approved mortgage and leave you needing more cash, not less. Same money, wrong document, worse outcome.

When a cash back is genuinely the right call

The decision rule is simpler than the products make it look. A percentage cash back is worth its premium only when your realistic alternative to that money is worse than the premium. That means:

• You have the down payment in hand, but you are short on closing costs specifically, and the deal fails otherwise.
• Your fallback would be an unsecured line of credit or a credit card, which cost far more than 0.70 rate points.
• You are confident you will hold the mortgage through the full term, so the clawback never triggers.
• A rebate is unavailable or pays after closing, and the shortfall is on closing day.

If none of those apply, save the rate. And note the wider consequence of borrowing on a card instead: lenders count credit cards at 3% of the outstanding balance per month as a debt payment, regardless of any 0% promotional rate, which can shrink your approval. The stress test and debt ratio guide explains how that arithmetic works.

This is general information about how these products are structured, not financial advice. Have a licensed mortgage broker price the exact spread you are being offered, and have your real estate lawyer read any rebate agreement before you sign it.

Side by side

Before you decide either way, work out the ceiling you are actually buying against. Our guide on how much house you can afford in the GTA shows why the cash you have on hand usually matters more than the mortgage you qualify for.