You Can't Borrow 65% of Your Equity, Here's What the HELOC Limit Actually Means

You own your home free and clear. $650,000 appraised value, no mortgage. The HELOC limit in Canada is 65%, so you figure you can borrow $422,500 against it. You call a lender, provide the paperwork, and wait for the funds.

Then you learn your actual limit is $422,500 minus whatever you still owe. Which sounds obvious until you realize most homeowners with a mortgage get this backward. They think 65% is calculated on their equity. The rule measures 65% of appraised value, not 65% of what you own.

That difference matters the moment you need the money.

A homeowner in Burlington carries a $320,000 mortgage on a home now worth $710,000. On paper, that's $390,000 in equity. The instinct is to assume a HELOC could let them borrow 65% of that equity, or about $253,500. The real ceiling is 65% of the appraised value, which comes A homeowner in Burlington carries a $320,000 mortgage on a home now worth $710,000. On paper, that's $390,000 in equity. The instinct is to assume a HELOC could let them borrow 65% of that equity, or about $253,500. The real ceiling is 65% of the appraised value, which comes to $461,500. Subtract the existing mortgage, and the actual available credit is $141,500. Not $253,500.

Most homeowners stumble here when they try to tap their equity. They treat the 65% rule as a percentage of ownership. The Office of the Superintendent of Financial Institutions caps the revolving portion of a Home Equity Line of Credit at 65% of the home's appraised value, full stop. Your existing mortgage comes off that total, regardless of how much equity you think you have.

The Calculation That Most People Get Wrong

Start with the appraisal. Not the listing price your neighbour got. Not the estimate from an online tool. A formal third-party appraisal, which the lender requires and which often comes in 5% to 10% below what the market "feels" like, especially when prices have been volatile. Call it $650,000 for a home you bought years ago for less.

Multiply by 0.65. That gives you $422,500. If you own the home outright, that is your HELOC ceiling. If you still owe $200,000 on a mortgage, your ceiling is $222,500. The equity figure, $450,000 in this case, never enters the math. The lender cares how much of the home's value they are willing to lend against, and that number is fixed at 65% by regulation.

This matters most when someone is carrying a mortgage they have been paying down for years. They watch the principal shrink, they see the equity climb, and they assume the distance between those two numbers is borrowing room. The borrowing room is the distance between 65% of the appraisal and the mortgage balance. In a market where home values have risen, that room can be substantial. In a market where values have stalled or dropped, or where the appraisal comes in conservative, the room shrinks fast.

Why the Appraisal Ceiling Bites Harder Than Expected

Appraisals are backward-looking. The appraiser pulls comparable sales from the last 12 months, typically favoring the most recent three to six months, adjusts for condition and location, and produces a defensible figure the bank can live with. If your neighbourhood saw a hot stretch last spring and has since cooled, the appraisal reflects the cooling, not the peak. If your home needs work, the appraiser accounts for it. If the market is moving sideways, the appraisal often comes in at or slightly below recent list prices.

This creates a trap for the homeowner who needs money for renovations. You want to borrow $80,000 to finish the basement and add a bathroom, which you expect will push the home's value up by $100,000. The lender appraises the home as-is. The value increase you are counting on does not exist yet, so it does not help you access the credit to make it happen. You are stuck borrowing based on today's value to fund tomorrow's value, and if today's value is conservative, the gap can kill the project.

The same logic applies to debt consolidation. A homeowner in Victoria with a $1,175,000 home (the June 2026 median for single-family homes, per the Victoria Real Estate Board) and a $400,000 mortgage has $775,000 in equity. Sixty-five percent of $1,175,000 is $763,750. Subtract the $400,000 mortgage, and the HELOC room is $363,750. That sounds like plenty until you factor in the stress test, which requires qualifying at a rate often two percentage points above the contract rate, and the debt servicing ratios, which cap total debt payments as a percentage of income. High equity does not override insufficient cash flow.

The Combined Loan Trap

A mortgage plus a HELOC can together reach 80% of the home's value, but only the portion up to 65% can be revolving. The slice between 65% and 80% must be amortized, meaning scheduled principal and interest payments, not interest-only flexibility.

For a readvanceable mortgage, where the HELOC limit grows automatically as you pay down the mortgage, the 65% line is a hard stop. Once your mortgage balance drops below 65% of the appraised value, the HELOC portion can expand to fill the gap, but it cannot exceed that threshold. Pay down your mortgage to 60% of the home's value, and the HELOC can grow to 5% of the value. Pay it down to 50%, and the HELOC can reach 15%. The total borrowing room is larger, but the revolving piece is capped.

The practical result is that homeowners with significant equity often have less liquid access to it than they expect. The number that matters is how much the appraisal says the home is worth, times 0.65, minus what you owe.