In Canada, you do not qualify for a mortgage at the rate you are actually paying. You qualify at the stress test rate, which is the higher of your contract rate plus 2% or 5.25% (the minimum qualifying rate set by OSFI).

If your lender offers you a 4.5% fixed rate, you are stress-tested at 6.5% (4.5% + 2%). If your lender offers you a 4.0% variable rate, you are stress-tested at 6.0% (4.0% + 2%). The bank calculates your monthly payment at the stress test rate and checks whether your debt service ratios (GDS and TDS) stay within the limits: GDS must remain below 39% (housing costs as a percentage of gross income) and TDS must remain below 44% (all debt payments including housing, car loans, student loans and credit card minimums as a percentage of gross income).

This means your actual rate does not determine your maximum borrowing. The stress test rate does. Even if rates drop to 3.5%, you are still stress-tested at 5.5%. This is why rate decreases from the Bank of Canada do not always translate into proportionally higher borrowing limits. The stress test floor of 5.25% acts as a ceiling on qualification regardless of how low the actual rate goes.

A fixed rate locks your interest rate for the entire term (typically 3 or 5 years). Your payment does not change regardless of what the Bank of Canada does. Fixed rates are priced off the bond market (specifically the Government of Canada 5-year bond yield) rather than the Bank of Canada overnight rate.

Fixed rates suit buyers who:

Want payment certainty. Are stretching to their maximum qualification. Sleep better knowing exactly what their payment will be for the next 5 years. Believe rates may increase from current levels.

A variable rate fluctuates with the Bank of Canada's overnight rate. When the Bank cuts rates, your interest cost decreases. When the Bank raises rates, your interest cost increases. Variable rates are typically expressed as prime minus a discount (for example, prime minus 0.50%).

Variable rates suit buyers who:

Have financial cushion to absorb payment increases. Have a longer time horizon (historical data shows variable rates cost less than fixed over most 5-year periods in Canada). Are comfortable with uncertainty. Believe rates will continue to decline from current levels.

The Bank of Canada began cutting its policy rate in mid-2024 after a prolonged tightening cycle that took rates from 0.25% to 5.0%. As of 2026, the overnight rate has declined and markets are pricing in additional reductions. In this environment, variable rate mortgages have become more attractive for buyers who believe the cutting cycle will continue. Fixed rates remain appealing for buyers who want certainty after years of rate volatility. Your mortgage broker can model both scenarios against your specific income, debt load and purchase price to show you the real dollar impact of each choice.

Most lenders and brokers offer a rate hold (also called a rate commitment) that locks in a quoted rate for 90 to 120 days while you shop. If rates go up during your search, you are protected. If rates go down, you get the lower rate. There is no cost and no obligation. Getting a rate hold is the first thing you should do before viewing a single home.

The difference between lenders on the same day can be 0.2% to 0.5%. On a $1M mortgage, 0.3% is $175/month or $2,100/year. A mortgage broker compares across 30+ lenders simultaneously, which is why most York Region buyers work with brokers rather than going directly to their bank. Your bank's loyalty does not earn you the best rate. Competition does.

Most buyers default to a 5-year fixed term because it is the most commonly offered. But 3-year fixed terms are often priced 0.1% to 0.3% lower. If you believe rates will be lower in 3 years than today, a shorter term lets you renew sooner at what may be a lower rate. The risk is that rates are higher at renewal. Your broker can model both scenarios.

Most mortgages allow you to prepay 10 to 20% of the original principal annually without penalty. On a $1M mortgage with 15% prepayment privilege, you can pay an extra $150,000 per year directly against the principal. Even $10,000 to $20,000 per year in lump-sum payments dramatically shortens the amortization and reduces total interest. This is the most powerful tool available to homeowners regardless of what rate they locked in.

Waiting for rates to drop another 0.25% while home prices rise 3% defeats the purpose. In York Region, a 3% price increase on a $1.4M home is $42,000 in additional purchase price. The monthly savings from a 0.25% rate reduction on a $1.1M mortgage is approximately $150/month. At that rate, it takes 23 years to recover the $42,000 in price increase through monthly payment savings. Buy when you are ready. Lock the best rate available. Refinance later if rates improve.