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Why a Blended-Rate Second Mortgage Can Cut Your Total Interest — Even When Rates Are High

When homeowners need extra funds—whether for debt consolidation, renovations, or stopping a Power of Sale—many assume the best option is refinancing their entire mortgage into a new first mortgage.
December 8, 2025 by
Why a Blended-Rate Second Mortgage Can Cut Your Total Interest — Even When Rates Are High
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But in today’s rate environment, refinancing everything can actually increase your overall interest costs, even if it looks cleaner on paper.

Here’s the truth:

A blended-rate second mortgage is often the cheaper, smarter option.

And thousands of Ontario homeowners are saving money by doing exactly that with Lendworth.

🔍 The Myth: “I should refinance everything at one rate.”

Many borrowers think:

“My first mortgage is at 5%. If I refinance everything at 7%, that’s not too bad.”

But this thinking misses the most important part of mortgage math:

Your existing low-rate first mortgage should be protected.

Giving up a 5% first mortgage to replace it with today’s higher rates is rarely a good financial decision.

Instead, a small second mortgage at a higher rate creates a blended interest cost that is often much LOWER than refinancing the entire mortgage.

Real Example: Blended Rates vs. Full Refinance

Scenario A — Keep Existing First + Add Second

  • $500,000 First Mortgage @ 5%

  • $200,000 Second Mortgage @ 10%

Your blended interest rate is NOT 10% — it’s weighted across the entire $700,000.

Blended Cost Calculation:

  • Portion at 5%: $500,000

  • Portion at 10%: $200,000

Blended Rate ≈ 6.43% overall

📉 Even though the second is at 10%, your total cost stays around 6.4%.

Scenario B — Refinance the Whole Mortgage

  • $700,000 New First Mortgage @ 7%

Now, instead of paying 6.43% blended, you’re paying 7% on the entire amount—and you lost your better rate.

💸 Total cost is higher, even though the rate looks lower than the 10% second.

⭐ Why This Matters for Ontario Homeowners in 2025–2026

Interest rates may come down — but not fast enough to justify breaking low-rate first mortgages.

Most borrowers who refinance:

  • lose a low, legacy rate

  • take on higher payments

  • incur thousands in penalties

  • pay lender and legal fees on the entire amount

Meanwhile, Lendworth clients who use second mortgages enjoy:

  • ✅ Lower overall blended rate

  • ✅ No need to break the first mortgage

  • ✅ Fast equity approvals (credit doesn’t matter)

  • ✅ Lower fees and smaller loan amounts

  • ✅ Easier future refinancing when rates fall

🧠 When a Second Mortgage Makes MORE Sense Than a Refinance

Choose a blended second mortgage when:

  • Your first mortgage rate is below today’s market rates

  • You need $50k–$500k quickly

  • You want to consolidate high-interest debt

  • You want to avoid a Power of Sale

  • You want lower monthly payments

  • You don’t want to restart a new 5-year term

With Lendworth, second mortgages are equity-based, meaning:

  • ✔ Bad credit is okay

  • ✔ Income verification is not required

  • ✔ Approvals can happen in 24–48 hours

📞 Call Lendworth Today — Get the Best Mortgage Strategy for Your Situation

Every borrower’s mortgage math is different. At Lendworth, we don’t just give you a rate — we help you choose the cheapest total borrowing cost, whether that’s:

  • a second mortgage,

  • a blended equity solution,

  • a HELOC, or

  • a full refinance when it truly saves you money.

Call Lendworth now for your best mortgage options across Ontario.

Fast approvals. Equity-based lending. No bank stress.