What are blended mortgage rates?

What are blended mortgage rates?

Want to lower your mortgage rate without breaking your loan? Read this quick fix on blended mortgage rates.

Quick answer

Blended mortgage rates combine two interest rates into one weighted rate. Lenders use a blended rate when you renew, port, or change part of your mortgage. It mixes your old contract rate with a new market rate so you don’t have two separate monthly payments.

What blended mortgage rates are (simple language)

A blended rate is not magic. It’s math. When part of your mortgage stays at the old rate and part moves to a new rate, the lender gives you one rate for the whole amount. That single rate equals the weighted average of the two rates.

Why lenders do this: it makes payments simple and helps you avoid juggling two accounts. Why borrowers want it: if your old rate is lower than today’s market rate, blending can keep your overall rate closer to the old, saving money compared to taking the new full rate.

How a blended rate is calculated (easy formula)

Blended rate = (oldbalance × oldrate + newbalance × newrate) / total_balance

Example: you have $200,000 at 2.5% and you renew $50,000 at 5.0: Blended = (200,000×0.025 + 50,000×0.05) / 250,000 = (5,000 + 2,500) / 250,000 = 3.0%

That single 3.0% rate applies to your full $250,000 balance.

When to ask for a blended rate

• You’re renewing early and your current rate is below market.
• You want to switch lenders but want to keep some of the old contract.
• You’re consolidating a second mortgage into your main mortgage.

Ask your lender or broker for a “blend and extend” or a blended rate quote. Don’t accept a vague answer — get the numbers in writing.

Pros and cons — what to watch for

Pros:

• Simpler payments. One rate, one schedule.
• Immediate savings if your old rate is lower than current posted rates.
• Avoids creating a small short-term second mortgage.

Cons:

• Not always the cheapest long-term choice. Sometimes switching fully to a lower posted rate (with penalty costs) saves more.
• Lenders may limit how much of the old rate they’ll keep.
• Penalties and prepayment rules still apply; read the fine print.

Action steps you can take today

• Calculate a blended rate using the formula above. Use a mortgage calculator to compare monthly payments.
• Get at least two quotes: your current lender and a broker.
• Compare blended options to a full transfer or refinance after factoring penalties.

Proven help in Financing & Mortgages

For local, no-nonsense advice in the Toronto market, contact Tony Sousa. He’s a top Financing & Mortgages strategist who helps homeowners compare blended rates, penalties, and real net savings. Email: [email protected] | Call: 416-477-2620 | https://www.sousasells.ca

Blended mortgage rates are a practical tool. Use the formula, get clear quotes, and compare real cash flows before you sign. If you want straightforward help that saves time and money, reach out — get the numbers, not the hype.