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Your lender offers to switch you “to biweekly.” Two options carry almost the same name and only one of them actually puts extra money against your principal. Here are the four levers that shorten an amortization, the arithmetic behind each one, and the limits your contract imposes before a penalty gets involved.
The four levers that let you pay off your mortgage faster
The Financial Consumer Agency of Canada names four, and there is no fifth one: make a lump sum payment, increase the amount of your regular payments, choose an accelerated payment option, and keep the same payment when your rate drops at renewal.
Here is what each one moves in a single year. This table is an arithmetic illustration, not an offer and not a rate. Original loan of $400,000, monthly payment of $2,000, and a contract that would allow 10% in the first two rows. Your contract will say something else.
| Lever | Calculation | Extra principal in one year |
|---|---|---|
| Lump sum payment | $400,000 x 10% | $40,000 |
| Higher regular payment | $2,000 x 10% x 12 | $2,400 |
| Accelerated frequency | 26 x $1,000 minus 12 x $2,000 | $2,000 |
| Renewal | Measured in years, not in dollars | Not applicable |
The ranking by dollar amount is not the ranking by realism. The lump sum wins on paper, but it assumes $40,000 in cash. Accelerated frequency comes third and requires no decision at all once it is turned on.
Accelerated or not accelerated: the only difference that counts
FCAC publishes the six frequency formulas, and they settle the debate. The two accelerated formulas do not divide an annual total, they divide a monthly payment. Arithmetic illustration again, with a $2,000 monthly payment chosen because it keeps the math clean.
| Frequency | FCAC formula | Payment | Payments per year | Annual total |
|---|---|---|---|---|
| Monthly | The payment | $2,000 | 12 | $24,000 |
| Semi-monthly | Payment / 2 | $1,000 | 24 | $24,000 |
| Biweekly | Payment x 12 / 26 | $923.08 | 26 | $24,000 |
| Weekly | Payment x 12 / 52 | $461.54 | 52 | $24,000 |
| Accelerated biweekly | Payment / 2 | $1,000 | 26 | $26,000 |
| Accelerated weekly | Payment / 4 | $500 | 52 | $26,000 |
The first four rows pay the same total, to the rounding. Moving from monthly to ordinary biweekly therefore does not shorten your amortization: the same money simply arrives in 26 pieces instead of 12.
The reason accelerated works comes down to one division. A year holds 26 two-week periods. You pay half a monthly payment 26 times, so 13 monthly payments. With accelerated weekly, 52 payments of a quarter of a payment also make 13. Twelve becomes thirteen. That is exactly what FCAC writes: accelerated payments let you make the equivalent of one extra monthly payment each year.
That thirteenth payment goes largely against principal, and every dollar of principal repaid today removes the interest it would have carried to the end of the amortization. Before you change anything, put your real numbers into the mortgage calculator and compare the two schedules. Paying 13 monthly payments instead of 12 is not neutral for a tight budget.
The lump sum payment: a percentage of the original amount
Prepayment privileges are not negotiated over the phone. They are written down. FCAC defines them as an amount you can repay on top of your regular payments without paying a penalty, in two forms: increasing your regular payment by a certain percentage, or making a lump sum payment up to a certain amount or percentage of the original mortgage amount.
Hold on to “original mortgage.” The percentage applies to the amount borrowed at the start, not to today’s balance. On an original loan of $400,000, a 10% privilege is worth $40,000 a year, and it is still worth $40,000 once the balance has come down to $250,000.
I cannot tell you the percentage that applies to you, and nobody can do that from a distance: FCAC writes that privileges vary from one lender to another. You do not have to guess, though. Banks that adhere to the code of conduct on prepayment have committed to sending you an annual statement giving the total dollar amount you may prepay each year without risking a penalty.
Two calendar rules, also from FCAC. The privilege is generally calculated on an annual basis. And if it is not used within the year, it is lost: an unused amount usually does not carry over to the following year. Your contract also states when the payment is allowed, sometimes on fixed dates only.
Increasing the regular payment: the lever you do not reverse
This is the second privilege, and it has a flaw the first one does not. FCAC is direct: as a general rule, once you increase your payments, you cannot decrease them before the end of the term. A term can run five years or more.
The practical consequence is simple. The lump sum is a one-time decision you can choose not to repeat next year. The payment increase follows you until renewal. If your income is variable, self-employed or commission-based, the logical order is the lump sum first, the increase second.
Paying off your mortgage faster at renewal
The fourth lever costs nothing and shows up once per term. When you renew and the new rate is lower, your calculated payment drops too. FCAC says it plainly: if you decide to keep the same amount for your regular payments, you can pay off your mortgage faster.
You can also ask directly for a shorter amortization period. Renewal is in fact the only moment when changing lenders triggers no penalty, which makes it the window where everything gets negotiated at once. What gets decided before the rate itself is covered in what gets decided before your mortgage rate.
One marker for context: the Bank of Canada was holding its target for the overnight rate at 2.25% on September 22, 2026. A low policy rate is not in itself a reason to repay faster. It only shifts the trade-off between principal and the other uses of your money.
Going past the limit, and what an insured loan changes
Beyond the privilege, it is no longer a repayment, it is a penalty. FCAC puts four actions in the same category: paying more than the allowed amount, cancelling your contract, transferring your mortgage before the end of the term, and repaying the full balance before maturity, including when you sell. The penalty is usually the higher of three months’ interest on the amount owing and the interest rate differential, and it can cost thousands of dollars. The full calculation, with the official example where the bill goes from $3,000 to $12,000, is in the penalty for breaking a mortgage in Quebec.
A nuance in the other direction: FCAC recommends using your privileges fully each year, because a future penalty will be calculated on a lower balance.
An insured loan adds a ceiling upstream. SCHL (CMHC) sets the maximum amortization period at 25 years for an owner-occupied purchase loan, or at 30 years under the SCHL Premier chez-soi program (CMHC Home Start). Its qualifying thresholds are a gross debt service ratio (ABD) of 39% and a total debt service ratio (ATD) of 44%, calculated at the higher of the contract rate plus 2% and a floor rate of 5.25%. The concrete consequence: shortening the amortization raises the payment, and that payment still has to fit inside those ratios if you change lenders at renewal. Reversing course, on the other hand, is capped.
When you should not pay off your mortgage faster
Three situations where the money works better somewhere else.
There is still higher rate debt. Credit card, personal loan, unsecured line of credit: every dollar placed on the mortgage is a dollar that is not repaying the most expensive debt. The order is decided by comparing rates, not by preference.
The emergency cushion does not exist yet. A lump sum payment is not liquid. To get that money back out, you have to refinance, with the ceilings, fees and notarial deed that implies, as explained in mortgage refinancing in Quebec.
A registered account would do better after tax. CELIAPP (the first home savings account), RRSP, a pension plan with employer matching: the comparison is made after tax, on your own situation, and it belongs to your accountant, not to an article. The plans open to first-time buyers are listed in the tax benefits for first-time buyers.
Frequently asked questions
If I switch to biweekly, am I paying off faster? Only if the option is accelerated. The non accelerated formula multiplies your monthly payment by 12 and divides it by 26, which reproduces exactly the same annual total. The accelerated formula divides the monthly payment by 2 and pays it 26 times, which is 13 monthly payments.
What is my prepayment percentage? It is in the information box at the beginning of your mortgage agreement, which federally regulated institutions must give you. The exact dollar amount also appears in the annual statement required by the code of conduct.
Does my unused privilege accumulate? Usually not. FCAC states that an unused amount does not carry over to the following year.
Once the mortgage is paid in full, is that the end of it? Not at the Registre foncier (Quebec’s land register). The Chambre des notaires recalls that the quittance, the discharge, is the deed by which the creditor acknowledges having been paid in full and consents to the cancellation. Your lender may charge discharge fees, from $0 to $400 according to FCAC, on top of professional fees. The sequence is described in the notary’s role in Quebec.
To go further, read the penalty for breaking a mortgage in Quebec and mortgage refinancing in Quebec.
Weighing accelerated repayment, a renewal or a sale on a property in Laval, Montreal or the North Shore? Reach out. The opinion of value is free and with no obligation.
Georges Matar
Residential Real Estate Broker · RE/MAX DU CARTIER INC.
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