Second Mortgage vs. Refinancing: Which Costs Less?
Both put your home equity to work, but they cost very different amounts depending on one thing most people overlook: what it costs to touch your existing first mortgage. Here’s how to compare the two honestly. All rates are subject to approval and can change without notice.
The Two Options, Plainly
- Refinancing replaces your first mortgage with a new, larger one — up to 80% of your home’s value — at today’s rates, under today’s qualification rules. One mortgage, one payment.
- A second mortgage leaves your first mortgage completely untouched and adds a smaller loan behind it, also up to 80% combined. Two payments, and your existing rate is preserved.
When Refinancing Usually Wins
- Your penalty to break the first mortgage is small — a variable-rate mortgage typically costs three months’ interest, and any mortgage near its renewal date is cheap to exit
- Your current rate is at or above today’s rates anyway (today’s 5-year fixed starts from 4.15%, variable from 3.70%)
- You qualify comfortably under the stress test with documentable income and decent credit
- You want the simplicity of one payment and the lowest possible rate on the whole balance
When a Second Mortgage Usually Wins
- You hold a low fixed rate — breaking it to refinance reprices your entire balance at today’s higher rates
- Your fixed-rate penalty (the interest rate differential) is large — on a mid-term fixed mortgage it can run into the thousands, sometimes tens of thousands
- You were declined for a refinance because of the stress test, income documentation, or credit — second-mortgage lenders weigh equity first (see second mortgage when the bank said no)
- You need the money for a defined, shorter period — a renovation, a tax bill, a business opportunity
- Speed matters — seconds are typically approved and funded faster than a bank refinance
The Math That Decides It
A second mortgage’s higher rate (ours start from 6.50%) applies only to the new money. A refinance reprices your whole balance — and may add a penalty on top. That’s why the “more expensive” option is often the cheaper one.
Illustration only, with the assumptions stated so you can test your own numbers:
- You owe $400,000 at 2.50% fixed, and need $60,000 more
- Refinance: break the mortgage (example penalty $12,000) and put the full $460,000 at 4.15% → about $19,090 interest in year one, plus the $12,000 penalty
- Second mortgage: keep the $400,000 at 2.50% (about $10,000 interest) and add $60,000 at an example 10% interest-only (about $6,000 interest, setup fees about $3,000) → about $19,000 all-in for year one
- In this illustration the second mortgage comes out ahead by roughly the size of the penalty. Change the penalty to near zero — at renewal time, for example — and the refinance usually wins instead. Full fee details are on our costs and fees page.
The lesson isn’t that one is always better. It’s that your penalty and your current rate decide the answer, and both are knowable before you commit to anything.
The Non-Money Factors
- Payments: one blended payment (refinance) vs. a second, separate, often interest-only payment
- Qualification: refinancing means full bank rules; a second mortgage has more flexible paths
- Flexibility: a second can be paid off, renewed, or folded into a refinance at your first mortgage’s renewal — many clients use it as a bridge, not a destination
- Total debt: both cap out at 80% of your home’s value combined — see how much equity you can take out
How We Decide It With You
Bring us your mortgage statement. We’ll estimate your real break penalty, quote the refinance and the second mortgage side by side with every fee in writing, and show you the total cost of each over the period you actually need the money. If refinancing is cheaper for your file, that’s what we’ll tell you — the comparison is free and there’s no obligation either way. Current numbers for both paths are on our second mortgage rates page.
Frequently Asked Questions
Can I take a second mortgage now and refinance later? Yes — it’s a common strategy. Take the second when you need it, then fold everything into one refinance at your first mortgage’s renewal, when there’s no penalty to break it.
Does a second mortgage affect my first mortgage’s renewal? Your first mortgage renews on its own terms. Depending on the lenders involved, the second mortgage may need to be repaid or re-registered at that time — we plan for that with you well before renewal day.
Which one is faster to get? Usually the second mortgage. Alternative and private lenders can approve and fund in days once the appraisal is in; a bank refinance is a full new application.
Which one needs better credit? Refinancing, by a wide margin — it follows bank qualification rules including the stress test. Second mortgages are available across a much wider credit range, priced accordingly.
What if I only need the money for a year? That tilts things toward a second mortgage: a one-year term matches the need, and you never paid a penalty or gave up a good first-mortgage rate for short-term money.
Direct: 647-627-8648 · Toll-Free: 1-800-820-5188 · Principal Broker Lic. #M13001328 · Allen Brothers Circle Inc. — Brokerage Licence #13392 · 2540 William Jackson Dr, Pickering, ON L1X 0E4
Want both options priced for your file? Apply now or call 647-627-8648 (direct) / 1-800-820-5188 (toll-free). Free consultation, zero pressure.
Related: Second Mortgage Rates · Second Mortgage Costs & Fees · Second Mortgages in Ontario · Equity Takeout & Second Mortgages