How a HELOC Works in Canada: Limits, Costs and Risks
A HELOC is, in the Financial Consumer Agency of Canada’s words, “a revolving credit product secured by your home.” You borrow against the equity you have built, you pay interest only on the amount you actually draw, and you can repay and re-borrow up to your limit. The flexibility is real. So is the collateral. FCAC puts the consequence plainly: “If you don’t pay back what you owe, your lender may take possession of your home.”
Most explanations stop at that definition. This one puts arithmetic on it: which of the two federal borrowing caps actually limits you, what a draw costs every month at the current prime rate, and the specific reason a minimum payment can leave you exactly where you started a decade later.
The mechanics, and the two types
FCAC’s page on home equity lines of credit (dated October 15, 2025) describes a HELOC as revolving credit: access funds up to your credit limit, repay them, reuse the credit as needed. Your home is the security, so selling it means paying the HELOC back.
On repayment, FCAC says your lender may require that you pay only the interest, or part of the principal and the interest. You can make payments or repay the balance at any time. Which of those two minimums your contract sets is the most consequential detail in the whole product, and we come back to it below.
There are two main types.
A HELOC combined with a mortgage depends on your mortgage, so you contract it with the same lender who issued the mortgage. FCAC notes that your available credit increases as you pay down your mortgage principal, and that this structure is “also sometimes called a readvanceable mortgage.”
A standalone HELOC is independent of your mortgage. The available credit does not increase when you pay down your mortgage principal, you may use different lenders for each, and you may get one even with no mortgage at all. FCAC notes you may use a standalone HELOC instead of a mortgage to buy a home, and lists the trade-offs: you may choose how much principal to repay at any time and you may pay off the balance at any time without a prepayment penalty, but you must make a higher down payment and have more equity, and your interest rate may be higher.
That prepayment point is a genuine structural advantage, and it is easiest to appreciate next to the alternative. Walking away from a closed mortgage mid-term triggers a prepayment penalty, which FCAC says will usually be the higher of three months’ interest or the interest rate differential. We cost that penalty out in full in breaking your mortgage in Canada.
Qualifying
Equity is the entry ticket. FCAC sets the minimum at 20% for a HELOC combined with a mortgage, and more than 35% for a standalone HELOC.
Then comes the same hurdle every mortgage borrower knows. “You must also pass a ‘stress test’ to qualify for a HELOC at a bank,” FCAC states, meaning you must prove you can afford payments at a qualifying interest rate rather than at the rate you would actually pay. That is the same qualifying-rate machinery that decides mortgage size, and we walk through how it constrains a real budget in how much mortgage you can afford.
Before approval, FCAC says you may need to provide proof of home ownership, provide your mortgage details including the current balance, term length and amortization period, get a home appraisal, and use the services of a lawyer (or notary in Quebec) to register your home as collateral.
How much you can actually borrow
Two separate caps apply, and they come from two different FCAC pages. Read only one and you will get the answer wrong.
The first is the HELOC cap: “With a HELOC, you may borrow up to 65% of the value of your home.”
The second is the total secured-borrowing cap. FCAC’s page on borrowing against home equity (also dated October 15, 2025) states: “You may usually borrow up to 80% of your home’s value.” Its worked example uses a $250,000 home, where the maximum borrowed against equity is $200,000, and a $150,000 mortgage leaves a remaining maximum of $50,000.
Equity itself is the appraised value minus everything owed on the home. FCAC’s illustration: a home worth $500,000 with $200,000 left on the mortgage gives you $300,000 in equity, which equals 60% of the home’s value.
Now put both caps on one household. Take a $600,000 home with a $350,000 mortgage balance. Equity is $250,000, or 41.7% of value. The 65% HELOC ceiling is $390,000. The 80% total ceiling is $480,000, and subtracting the $350,000 mortgage leaves $130,000 of room.
The binding number is $130,000, and it comes from the 80% cap, not the headline 65% HELOC cap. That is the part worth internalising: while a large mortgage is outstanding, the total secured limit is what constrains you, and the 65% figure only starts to bite once the mortgage is small relative to the home’s value. Combining FCAC’s two published limits this way is our arithmetic on that scenario, not a lender’s approval.
One more thing FCAC flags, and it runs against instinct. Your credit limit is negotiable, lenders may approve you for a higher limit than you need, and that may tempt you to overspend. FCAC’s suggestion is to consider asking your lender for a lower credit limit.
What it costs to carry
FCAC says most HELOCs have a variable interest rate, based on the lender’s prime rate. Its own illustration uses prime plus 1%: at a prime rate of 5.85%, the HELOC rate would be 6.85%.
To cost this at current conditions we use the same prime-plus-1% structure on the published prime rate. The Bank of Canada’s daily digest put the prime rate at 4.45% as of September 9, 2026, which gives an illustrative HELOC rate of 5.45%. That is an illustration built on a published prime rate and FCAC’s example spread. It is not a quote from any lender, and your negotiated spread is the variable that matters most in your own case.
At 5.45%, interest-only on a HELOC costs roughly $45.42 a month per $10,000 drawn. That per-$10,000 figure is the one to carry around, because it scales to whatever you are actually considering.
On a $50,000 draw, the interest-only minimum is $227.08 a month, or $2,725 a year. And here is what the number does not tell you on its own: pay exactly that, every month, and the $50,000 never goes down.
How prime-linked rates move, and why the prime-plus structure behaves the way it does, is the same mechanism behind variable mortgages, which we cover in fixed vs variable mortgages in Canada.
Interest is not the only cost. FCAC lists home appraisal fees, legal fees to register your home, title search fees to confirm there are no liens, administration fees and monthly fees. Cancelling brings cancellation and discharge fees, and transferring to a new lender means paying the HELOC off and closing it first, which FCAC says will likely mean legal, administrative and discharge fees. Optional credit insurance covering life, illness and disability may also be offered, and FCAC is explicit that “You don’t need to purchase the insurance for your lender to approve your HELOC.”
The interest-only trap, in five years of numbers
FCAC’s warning is one line in its list of risks, and it is the whole game: “if you only pay the interest, you won’t pay off your loan.”
Here is what that looks like on the same $50,000 draw at 5.45%, over five years, against paying a flat $500 a month instead.
| Interest-only minimum | $500 a month | |
|---|---|---|
| Paid over 5 years | $13,625 | $30,000 |
| Balance after 5 years | $50,000 | $31,225 |
The interest-only borrower has handed over $13,625 and owes precisely what they owed on day one. The $500 borrower has paid more cash and has a balance that is actually falling.
Run that $500 payment to the end and the $50,000 is gone in 133.6 months, or 11.1 years, with $66,805 paid in total and $16,805 of that being interest. Eleven years is not fast. It is, however, finite, which the interest-only path never is.
FCAC’s planning advice points the same way: establish a repayment schedule and stick to it, and consider one that includes more than your minimum payments, which it says may significantly reduce your interest costs.
The rate can move, and it can move at any time
“With a HELOC, your lender may change your interest rate at any time,” FCAC states. Federally regulated financial institutions must give you notice in writing within 30 days of making the change. Notice is not consent, and 30 days after the fact is not much warning.
So price the move before you take the draw. If prime rose one percentage point, taking our illustrative rate from 5.45% to 6.45%, the interest-only minimum on $50,000 goes from $227.08 to $268.75 a month, an increase of $41.67.
The damage to the repayment plan is larger than the damage to the monthly cheque. Hold the payment at $500 a month at the higher rate and the payoff stretches from 133.6 months to 143.8 months, an extra 10.2 months, while total interest rises from $16,805 to $21,924. That is $5,118 of additional interest from a single percentage point, absorbed by someone whose monthly payment never changed.
HELOC versus the other ways to tap equity
FCAC’s comparison table sets the options side by side. The credit limits and rate descriptions below are its wording.
| Product | Credit limit | Interest rate | Access to money |
|---|---|---|---|
| HELOC | 65% of the appraised value of your home | Variable. Will change as market interest rates go up or down | As needed, using regular banking methods |
| Second mortgage | 80% of the appraised value, minus the balance of your mortgage | Fixed or variable. Generally higher than on the first mortgage | One lump sum |
| Home equity loan | 80% of the appraised value of your home | Fixed or variable. Generally higher than on a mortgage | One lump sum |
| Reverse mortgage | 55% of the appraised value, minus the balance of your mortgage | Fixed or variable. Generally higher than on a mortgage | One lump sum or in instalments |
FCAC lists appraisal, title search, title insurance and legal fees against all four.
Three distinctions matter beyond the table. On second mortgages, FCAC states that interest rates “are usually higher than on first mortgages because they are riskier for lenders.” A home equity loan is a single lump sum repaid in fixed amounts on a fixed term and schedule, and once you pay it back you cannot borrow it again. A reverse mortgage requires you to be a homeowner and, FCAC says, usually aged 55 or older, with no payments due until the loan is due, which means interest accumulates against your equity the whole time.
Who it suits, and who should slow down
FCAC names three uses a HELOC may suit: managing unexpected expenses, consolidating debt, and renovating your home. What those share is a defined purpose and a finish line. FCAC’s planning section asks you to set a clear objective, its example being home repairs or education rather than vacations or shopping, then create a budget and borrow only what you need.
The reasons to slow down are FCAC’s risk list, and each one has shown up in the arithmetic above: if interest rates increase you may have a hard time repaying, especially if you withdraw large amounts; if you do not pay it back, you could lose your home; it reduces the equity in your home, which may affect your financial stability and limit your future options if you want to sell; the easy access to funds may tempt you to take on more debt than you are able to pay back; and if you only pay the interest, you will not pay off your loan.
So the practical test before signing is not whether you can afford the minimum payment. It is whether you can afford a payment large enough to clear the balance on a timeline you have actually written down, at a rate one point higher than the one you are being offered. If the answer is yes, the flexibility is worth having. If the only affordable number is the interest-only minimum, what you are taking on is a permanent charge against your home rather than a loan you are going to repay.
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