Mortgage offset accounts in Canada: do they exist, and what do Canadians use instead?
People who have lived in Australia or the UK often ask where the offset account is when they get a Canadian mortgage. The short version: you usually will not find that exact product, but you can get close to the same effect. Here is how an offset works, what Canada has instead, and a calculator that shows your borrowing room and what your savings could save you.
On this page
Borrowing room and offset calculator
How much room do you have, and what could your savings avoid?
The 65% and 80% figures are FCAC's general guide; your lender sets your actual limit. Interest avoided is the savings amount times the debt rate for one year, a simple estimate: HELOCs typically charge interest on the daily balance, and fixed mortgages compound semi-annually. Rates are illustrative, not offers. Enter 0% tax if the savings would sit in a TFSA.
What an offset account does
In countries where it is common, an offset account is a savings or transaction account linked to your mortgage. If you owe $400,000 and keep $20,000 in the offset account, the lender charges interest as if you owed $380,000. The money is still yours to spend. You earn no interest on it, but you avoid mortgage interest on that amount, and in many tax systems that saving is not taxed the way interest income is.
The appeal is simple: your emergency fund keeps working against your debt without you giving up access to it.
What Canada has instead
FCAC's guides on mortgages and home equity describe several products, and none of them is an offset account in that exact form. The ones that come closest:
- A HELOC combined with a mortgage. FCAC says this HELOC depends on your mortgage, so you get it from the same lender, and your available credit increases as you pay down your mortgage principal. It is also called a readvanceable mortgage, and many institutions sell one under their own brand name. You only pay interest on what you owe on the HELOC, so cash you deposit against the HELOC balance lowers your interest straight away, and you can borrow it again.
- Prepayments. Paying extra against your mortgage reduces the balance interest is charged on. Most closed mortgages limit how much you can prepay each year; our prepayment privileges guide explains the limits.
- Borrowing back prepaid amounts. FCAC notes some lenders let you re-borrow what you prepaid during your term, usually by adding it back to your mortgage balance, which raises your interest costs again.
Some lenders market all-in-one or combined products that work much like an offset in practice. Under FCAC's descriptions, they are a form of HELOC combined with a mortgage, so the same rules on limits, qualifying and risks apply.
The 65% and 80% limits
| Product | FCAC guide to the limit | Minimum equity |
|---|---|---|
| HELOC combined with a mortgage | HELOC portion up to 65% of home value; total usually up to 80% | 20% |
| Standalone HELOC | Up to 65% of home value | More than 35% |
| Home equity loan or second mortgage | Up to 80% of home value, minus what you owe | Varies |
| Reverse mortgage (usually 55 or older) | Up to 55% of appraised value | Varies |
FCAC's own example: on a $250,000 home, 80% is $200,000; with $150,000 owed, the most you may borrow on equity is $50,000. At a bank you must also pass a stress test for a HELOC, the same idea as in our mortgage stress test guide. Expect appraisal, title search, title insurance and legal fees to set one up, and possible discharge fees to remove it.
Worked example: $20,000 of savings
Marc and Elena own a home worth $600,000 and owe $400,000. They keep a $20,000 emergency fund in a high interest savings account.
- Borrowing room: 80% of $600,000 is $480,000. Minus $400,000 owed leaves $80,000. The 65% HELOC cap ($390,000) is not the limit that binds here.
- Savings in a HISA: at an illustrative 3%, $20,000 earns $600 a year. Outside a TFSA, at a 30% marginal tax rate, they keep $420.
- Same $20,000 against debt: at an illustrative 5%, it avoids about $1,000 of interest a year. Interest you avoid is not income, so there is nothing to tax.
- Difference: $1,000 − $420 = $580 a year in favour of the offset-style approach, at these rates.
Change the rates and the answer can flip. If the HISA paid 4% inside a TFSA and the debt cost 3.5%, the HISA would win ($800 against $700). That is why the calculator asks for your own numbers. Our HISA guide and HISA tax guide cover the savings side.
Risks FCAC flags
A HELOC makes borrowing easy, which is both the point and the danger. FCAC lists these risks:
- if interest rates rise, repaying can get harder, especially after large withdrawals (most HELOCs have variable rates tied to the lender's prime rate, and the lender may change the rate at any time, with written notice within 30 days)
- if you only pay the interest, you never pay off the loan
- borrowing reduces your home equity, which can limit your options if you sell
- easy access may tempt you to take on more debt than you can repay
- if you do not repay, the lender may take possession of your home
FCAC also suggests asking for a lower credit limit than you are approved for, so the room is not there to tempt you.
Options people compare
| Option | What it does | Watch for |
|---|---|---|
| HELOC combined with a mortgage | Cash deposited against the HELOC cuts interest at once and can be re-borrowed | Variable rate, stress test, setup and discharge fees, discipline |
| Lump-sum prepayments | Lowers the balance on your existing mortgage | Annual prepayment limits; money is harder to get back |
| Prepay, then borrow back | Re-borrow what you prepaid, if your lender allows it | Adds back to your balance and interest |
| Keep savings in a HISA or TFSA | Full access, separate from your home | Interest is taxable outside a TFSA |
| Change at renewal | Switch product type when your term ends, often without a penalty | Requalifying; see our renewal guide |
These are options to understand, not recommendations. Breaking a mortgage mid-term to change products can cost a penalty, so check that first. More calculators are on the tools page.
How to compare an offset-style setup with what you have now
- Find your home's value and your current mortgage balance from your latest statement.
- Work out your borrowing room: 80% of home value minus what you owe, with any HELOC portion capped at 65% of home value.
- Note your mortgage or HELOC rate and your HISA rate, and your marginal tax rate if the savings sit outside a TFSA.
- Run both numbers in the calculator: interest your savings would avoid against debt, and HISA interest after tax.
- Check your prepayment privileges and whether you can borrow prepaid amounts back.
- Ask your lender about fees, the stress test and how interest is charged before you change products.
Questions people ask
Do mortgage offset accounts exist in Canada?
The offset account common in Australia and the UK, where a linked savings balance reduces the mortgage balance that interest is charged on, is not among the options the Financial Consumer Agency of Canada describes for Canadian homeowners. The closest Canadian products are a HELOC combined with a mortgage, sometimes sold under a lender's own brand name, and prepayments you can borrow back.
What is the closest thing to an offset account in Canada?
A home equity line of credit (HELOC) combined with a mortgage, also called a readvanceable mortgage. You only pay interest on what you owe on the HELOC, so money you deposit against it reduces interest right away, and your available credit grows as you pay down the mortgage.
How much can I borrow with a HELOC in Canada?
FCAC says a HELOC may be up to 65% of your home's value, and total borrowing against your home is usually up to 80% of its value. You need at least 20% equity for a HELOC combined with a mortgage, and more than 35% for a standalone HELOC.
Is it better to pay down my mortgage or keep money in a HISA?
It depends on your rates, your tax bracket, your prepayment limits and whether you need access to the money. Interest you avoid on debt is not taxed, while HISA interest outside a TFSA is taxable. The calculator on this page compares the two at rates you enter.
Can I borrow back money I prepaid on my mortgage?
Some lenders allow it. FCAC says your lender may let you re-borrow amounts you prepaid during your term, typically by adding them back to your mortgage balance, which increases your interest costs.
What are the risks of a HELOC combined with a mortgage?
FCAC lists rising variable rates, the temptation to borrow more than you can repay, reduced home equity, and never paying off the loan if you only pay interest. If you do not repay, your lender can take possession of your home.
Do I need to pass the stress test for a HELOC?
Yes, at a bank. FCAC says you must pass a stress test to qualify for a HELOC, which means proving you can afford payments at a qualifying interest rate.
Looni reads your statements and shows the interest you pay and the interest you earn side by side, so you can see where money sits idle. Read-only, no advice.
Sources
Financial Consumer Agency of Canada, Home equity lines of credit (HELOC combined with a mortgage, credit grows as principal is paid, 65% limit, 20% and 35% minimum equity, stress test, risks, prime-based rates and 30-day notice, fees, lower limit suggestion) and Borrowing against home equity (usually up to 80% of home value, $250,000 example, comparison of second mortgages, HELOCs, reverse mortgages, home equity loans and borrowing prepaid amounts). Rates, the household and the arithmetic are illustrative and ours.