Private Second Mortgages: How They Work Behind Your First
A private second mortgage lets you borrow against your home's equity without touching your existing mortgage. You keep your first mortgage's rate and term, and a private lender registers a second loan behind it. It's faster and more flexible than a bank — and more expensive per dollar — so it works best for a defined amount, for a defined time, with a clear plan to pay it out.
Key takeaways
- A private second mortgage sits behind your first mortgage on title; you keep your first mortgage as it is.
- Typical 2026 pricing is about 10% to 15% interest-only, with a lender fee of about 2% to 5%.
- Most lenders cap combined loan-to-value near 75% in strong urban markets, and about 65% for condos and smaller centres.
- It's usually cheapest when your first mortgage has a low rate or a large penalty to break.
What is a private mortgage?
A private mortgage is a loan secured on real estate by a lender outside the banking system — an individual investor, a private lending company or a mortgage investment corporation. Private lenders don't apply the federal stress test or bank debt ratios. They lend on equity, the property and a believable repayment plan, and they charge for that flexibility.
What is a second mortgage?
A second mortgage is any mortgage registered behind a first. A private second comes from a private lender, usually for a one-year term with interest-only payments. Common uses include consolidating high-interest debt, paying property tax or CRA arrears, funding a renovation, catching up mortgage arrears, a business need, or a down payment on another property. Our private second mortgage and second and third mortgage pages cover current pricing.
How much can you borrow?
Lenders use combined loan-to-value (CLTV): your first mortgage plus the new second, divided by the appraised value. On a $950,000 home with a $480,000 first mortgage, a 75% CLTV limit allows total mortgages of $712,500 — up to $232,500 in a second, before fees. A $150,000 second would put you at 66.3% CLTV, comfortably inside the limit.
Why are private mortgage positions important?
If the property is sold to recover a debt, the first mortgage is repaid in full before the second sees anything. The second-mortgage lender therefore has less protection, which is why it charges more, lends less and watches your first mortgage closely. A default on your first mortgage is also a default under most second-mortgage contracts.
Position also creates a practical hurdle: some first mortgages are registered as collateral charges for more than you owe, or prohibit further borrowing. In those cases a second can't be registered, or the first lender's consent is needed. Your lawyer or broker should check this before you pay for an appraisal.
Who lends private second mortgages?
- Mortgage investment corporations (MICs), under section 130.1 of the Income Tax Act — the most consistent rate cards and renewal policies.
- Private lending companies that specialize in seconds, often with quick approvals.
- Individual investors, arranged through a licensed brokerage.
Some B lenders and credit unions also offer second mortgages, usually amortizing and income-qualified, at lower rates than private lenders. If your income documents well, ask about those first.
How does the payment work on private second mortgages?
Interest-only, monthly, with fees deducted from the advance. Using the example above — a $150,000 second at 11.99%, compounded semi-annually:
| Item | Amount |
|---|---|
| Monthly interest-only payment | $1,462.63 |
| Interest over 12 months | about $17,552 |
| Lender fee (3%) | $4,500 |
| Broker fee, where one applies (1%) | $1,500 |
| Legal and appraisal (estimate) | about $2,100 |
| Net funds after fees | about $141,900 |
| Effective first-year cost | about 18.1% of the net funds |
You keep paying your first mortgage as usual. If the second replaces credit card balances at 20%-plus, the monthly saving can still be large — but only if the cards stay paid off.
What's the term of a private second mortgage?
Usually 12 months. At maturity you repay it from a sale or refinance, or renew with the lender — normally with a renewal fee. A good plan lines the maturity up with your first mortgage's renewal, so both can be refinanced into one new mortgage without a penalty. See refinancing a private mortgage.
What are the criteria to get approved for a private second mortgage?
- Combined loan-to-value within the lender's limit — commonly up to 75% for urban detached homes.
- A first mortgage in good standing, or arrears that the second will cure.
- An appraisal (some lenders accept an automated valuation on low-CLTV files in major markets).
- Evidence you can carry both payments — bank statements, income, rent or a prepaid interest reserve.
- Property tax paid up, or paid from the advance, because tax arrears rank ahead of mortgages.
- An exit plan — usually a refinance at your first mortgage's renewal.
Why are private second mortgage rates higher than traditional mortgages?
Because the lender is second in line. It only recovers its money after the first mortgage, costs of sale and property tax are paid. On top of that, private money costs more than bank deposits, the loan can't be insured, and a one-year loan has to cover its own set-up and legal costs. Those factors put private seconds two to four percentage points above private firsts on the same property, and far above a bank mortgage.
What are the pros and cons of private second mortgages?
| Pros | Cons |
|---|---|
| Keep your low-rate first mortgage and avoid a break penalty | Highest rates and fees of the common mortgage options |
| Borrow only the amount you need | Two mortgage payments each month |
| Fast funding, often within days | Interest-only — the balance doesn't fall |
| Approval on equity and the property | Lower borrowing limits than a first mortgage |
| Can stop collections, tax arrears or a power of sale | Renewal fees if you can't exit at maturity |
Sources
This article is general information, not financial or legal advice. Rate and fee ranges are typical of the private market in 2026 and vary by lender, property and file. Examples are illustrative and rounded. Mortgage financing is subject to lender approval.
Frequently asked questions
Usually not for a standard mortgage, but some first mortgages prohibit further charges or are registered as collateral charges above the balance. Check your first mortgage's terms before applying.
Yes, often. Equity and the property matter more than your score, though credit affects the rate and maximum loan.
It's paid out from the sale proceeds after the first mortgage, along with any prepayment charge in your contract.
When your first mortgage has a low rate or a big penalty, a second is often cheaper overall. When your first is maturing anyway, a single refinance usually wins.
See what a private second would cost — in writing
We'll check your first mortgage, calculate your combined loan-to-value and compare second-mortgage lenders on the total cost.