HELOC vs. Second Mortgage in Canada: Which One When You Need to Tap Equity

If you've built equity in your home and need access to cash - for renovations, debt consolidation, an investment, a kid's education, whatever - you've got two main paths. A Home Equity Line of Credit (HELOC) or a second mortgage. They sound similar. They are not the same thing, and picking the wrong one can cost you a lot of money.

Here's the honest comparison.

What each one actually is

A HELOC is a revolving line of credit secured against your home. The lender approves you for a maximum credit limit (typically up to 65% of your home's value, or 80% of value when combined with your existing first mortgage). You can draw against it as needed, pay it down, draw again, repay - just like a credit card, but secured by your house. You only pay interest on what you actually use, not on the full available limit.

A second mortgage is a separate loan on top of your existing first mortgage, typically for a fixed amount, with a defined term and a fixed payment schedule. You receive the full amount upfront and you make principal-and-interest payments over the term. It's a closed-end loan, not a credit line.

Both are secured by registering a charge against your property's title. If you default on either, the lender can ultimately force the sale of your home to recover their loan.

The rates - and the gap is bigger than you'd think

This is where the choice often breaks down for clients.

HELOCs from prime lenders (banks, credit unions, monolines) are typically priced at Prime + 0.50% to Prime + 1.00%. With Prime at 4.45% in spring 2026, that's 4.95%-5.45%. Variable, tied to Prime, so if BoC cuts rates your HELOC rate drops too.

Second mortgages generally come in two tiers:

• B-lender seconds: 7%-9%, fixed term, often 1-3 years
• Private/MIC seconds: 9%-13%+, fixed term, often 6-24 months, plus 1-3% lender fees on funding

That gap is meaningful. On a $100,000 advance, the difference between a 5% HELOC and a 10% private second is $5,000/year in interest. Over 3 years, that's $15,000.

So why do second mortgages exist at all? Because not everyone qualifies for a HELOC.

When a HELOC makes sense (and when you'll actually get one)

HELOCs are the cheaper, more flexible option, but they're harder to qualify for than most people realize. Lenders evaluate HELOC applications similarly to a regular mortgage: they look at income, debt service ratios, credit, employment, and property value.

If you have:

• Strong, verifiable income (employment letter, pay stubs, T1s)
• Good credit (typically 680+ beacon)
• Reasonable debt levels relative to income
• Solid equity position in the home (40%+ equity is a green light)

...you'll usually get a HELOC at a major bank or monoline at Prime + 0.50% to + 1.00%.

HELOCs work well when:

• You need ongoing access to capital (renovations done in stages, investment opportunities, etc.)
• You'll pay it down quickly and don't want to be locked into a fixed term
• Your cash flow can absorb interest-only payments (most HELOCs allow interest-only payments, which is great for flexibility but a debt trap if you only ever pay interest)
• You want the option to use it without committing to using all of it

When a second mortgage makes sense

Second mortgages exist mostly for situations where a HELOC isn't an option - either because you don't qualify or because you need the funds in a single specific use case.

Common second mortgage scenarios:

• Bruised credit. If your credit score is below 660, most prime HELOCs aren't available. A B-lender or private second mortgage is willing to lend based on the equity in the home and a credit story they can underwrite.
• Self-employed with limited income documentation. If you can't fully document income for a HELOC qualification, a private second mortgage may underwrite based on equity and the asset, less so on income verification.
• Short-term funding need. If you need funds for 12-24 months and have a clear exit plan (sale of business, refinance into prime, etc.), a fixed-term second mortgage can be the right tool. You pay the higher rate for the certainty and exit flexibility.
• Specific large lump sum. If you need exactly $150,000 once for a specific purpose (down payment on investment property, business injection, debt payoff), a closed-end second mortgage with a defined repayment schedule can be cleaner than a revolving line.
• Existing first mortgage has tight prepayment terms or large penalties. Sometimes it's cheaper to leave your first mortgage alone and put a second behind it, rather than break the first to access equity through a refinance.

The trap most people don't see

Here's the big one. A lot of people end up in private second mortgages thinking they'll refinance into a HELOC or first mortgage in 12 months. They don't fix the underlying credit or income issue, the second matures, the lender wants their money back, and there's no exit. The second gets renewed (with new fees), or the borrower has to sell.

If you take a private second mortgage, the exit plan needs to be real. "I'll deal with it later" isn't an exit plan. "My business sale closes in March, my divorce is finalized in May, my credit will be back at 680 by Q4 because I'm doing X, Y, Z" - those are exit plans.

Tax considerations

Interest on either a HELOC or a second mortgage is generally not deductible if used for personal purposes (renovations, vacation, debt consolidation, kids' education).

If used for investment purposes - to buy income-producing investments, a rental property, business equipment - the interest may be deductible against the income generated. The CRA rules around this are specific (the "tracing" requirement, where interest deductibility follows the use of borrowed funds), so this is a conversation to have with your accountant before you draw funds, not after.

A real example

Couple in Newmarket, home worth $1.1M, owe $400K on first mortgage at 4.49%. Equity position: $700K. Need $80K for a major renovation.

HELOC option: Bank approves them for $200K HELOC at Prime + 0.5% (4.95%). They draw $80K. Annual interest: $3,960. They can pay interest-only ($330/month) while construction is underway, then increase payments to retire principal.

Second mortgage option (if HELOC didn't qualify): Private lender offers $80K closed second at 9.99% for 24 months, plus 2% lender fee ($1,600). They make P&I payments of about $850/month. Annual interest: $7,992. After 24 months, they need to refinance the second back into a HELOC or first mortgage.

Same $80K, very different cost: $3,960/year vs. $7,992/year, plus the upfront fee. If they qualify, HELOC wins decisively. If they don't qualify, the second mortgage solves the problem at higher cost - and the question becomes whether the renovation is worth $4,000+/year extra to fund.

How to decide

The decision tree is roughly:

1. Do you qualify for a HELOC at a prime lender? If yes, that's almost always the right choice.
2. If no, why not? Credit, income documentation, debt service ratio? Fixing the underlying issue (if possible) and waiting may save you tens of thousands.
3. If you can't fix it and need funds now, is a B-lender HELOC or B-lender second available at lower cost than a private second? Some B-lenders have HELOC products at 6%-8%, which beats 10% private seconds.
4. If only private is available, what's the realistic exit plan and timeline? Build the exit before signing the second.

Run the math with us

If you're considering either a HELOC or a second mortgage, we can pull your actual numbers, run the qualification at multiple lenders (HELOC and second mortgage paths), and give you a side-by-side cost comparison. We work with everyone from the major banks (HELOCs) to monolines and B-lenders (second mortgages), so we can show you what's actually available for your situation.

Book a call any time. It's the conversation that should happen before you commit to either path.