HELOC vs Second Mortgage in Canada: The Two Ways to Tap Your Equity

If you've built equity in your home and need access to cash - for renovations, debt consolidation, an investment property, anything - you've got two main paths in Canada. A HELOC (Home Equity Line of Credit) 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 alone, or 80% combined with your existing first mortgage). You can draw against it as needed, pay it down, draw again, repay - similar to a credit card, but secured by your house. You pay interest only on what you've drawn, not on the full limit.

A second mortgage is a separate loan layered on top of your existing first mortgage. Typically a fixed amount, with a defined term and a fixed payment schedule. You receive the full amount upfront and make principal-and-interest payments over the term. Closed-end loan, not a credit line.

Both register a charge against your property's title. If you default on either, the lender can ultimately force a sale to recover what they're owed.

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

This is where the choice usually 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 the BoC cuts rates your HELOC rate drops too.

Second mortgages generally split into two tiers:

• B-lender seconds: 7%-9%, usually 1-3 year term
• Private/MIC seconds: 9%-13%+, usually 6-24 month term, 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, $15,000.

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

When a HELOC makes sense

HELOCs are the cheaper, more flexible option, but they're tougher to qualify for than most people realize. Lenders evaluate HELOC applications similarly to a regular mortgage: income, debt service ratios, credit, employment, 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%+ 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 a fixed term
• Your cash flow can absorb interest-only payments (most HELOCs allow them, 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 for situations where a HELOC isn't an option - either because you don't qualify or you need funds for a single specific purpose.

Common scenarios I see:

• Bruised credit. If your credit score is below 660, most prime HELOCs aren't available. A B-lender or private second mortgage will 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 can underwrite mostly on equity, less on income verification.
• Short-term funding need. If you need funds for 12-24 months and have a clear exit plan, a fixed-term second can be the right tool. You pay the higher rate for certainty and exit flexibility.
• Specific large lump sum. If you need exactly $150,000 once for a defined purpose, a closed-end second with a clear repayment schedule is sometimes cleaner than a revolving line.
• Existing first mortgage has tight prepayment terms or large penalties. Sometimes leaving the first alone and putting a second behind it is cheaper than breaking the first to refinance.

The trap most people miss

Here's the big one. People often 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" is not an exit plan. "My business sale closes in March, my divorce is finalized in May, my credit will be at 680 by Q4 because I'm doing X, Y, Z" - those are exit plans.

Tax considerations

HELOC and second mortgage interest is generally not tax-deductible if the funds are used for personal purposes (renovations, vacation, debt consolidation, 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. CRA's rules around this are specific (the "tracing" requirement, where deductibility follows the use of borrowed funds), so this is a conversation with your accountant before you draw funds, not after.

A real example from Burlington

Couple in Aldershot, home worth $1.1M, owe $400K on first mortgage at 4.49%. Equity position: $700K. They need $80K for a basement and kitchen renovation.

HELOC option: Bank approves them for a $200K HELOC at Prime + 0.50% (4.95%). They draw the $80K. Annual interest at full draw: ~$3,960. They can pay interest-only ($330/month) during construction, then increase payments to retire principal once the project is done.

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 on the HELOC vs $7,992/year on the private second, plus the $1,600 upfront fee. If they qualify, HELOC wins decisively. If they don't, the second mortgage solves the problem at higher cost - and the question becomes whether the renovation is worth $4,000+/year more to fund.

How to decide

Decision tree, roughly:

1. Do you qualify for a HELOC at a prime lender? If yes, almost always the right choice.
2. If no, why not? Credit, income documentation, debt service ratio? Fixing the underlying issue (when 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.

Run the math with me

If you're considering either a HELOC or a second mortgage, I 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. I work with everyone from major banks (HELOCs) through monolines and B-lenders (second mortgages), so we can show you what's actually available for your situation.

Book a call - this is the conversation that should happen before you commit to either path.