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Mortgage prepayment privileges: how much you can pay without a penalty

Published October 11, 2026 · 8 min read · Mortgages · Math checked, Canadian semi-annual compounding

Short answer: a prepayment privilege is the extra money your mortgage contract lets you pay on top of your regular payments without a penalty. It usually comes in two parts: a yearly lump sum capped at a percentage of the original mortgage amount, and the right to raise your regular payment by a set percentage. Most lenders cap it per year and unused room does not roll over. On a $450,000 balance at 4.5% with 25 years left, one $10,000 lump sum saves about $19,800 of interest and 11 months.

Jump to: CalculatorWhat the privilege coversWhere to find yoursWorked exampleRules people trip onOptions comparedFAQ

Prepayment privilege calculator

How much can you prepay, and what does it save?

OptionPaid off inTotal interestSaved

Monthly payments, Canadian semi-annual compounding, rate held constant for the whole amortization, lump sum paid today. Your contract's privilege percentages and dates decide what is allowed. Estimates, not advice.

What a prepayment privilege covers

The Financial Consumer Agency of Canada (FCAC) defines it plainly: the amount you can put toward your mortgage on top of your regular payments without paying a prepayment penalty. It normally lets you do one or both of these:

The percentages vary from lender to lender and product to product, so the only number that matters is the one in your contract. A contract might say, for example, that once each year you can prepay up to 10% of the original principal and raise your payment by up to 10%. Note the base: the lump sum is usually measured against the original mortgage amount, not today's balance. On a $500,000 mortgage, 10% is $50,000 a year even after the balance has dropped to $450,000.

If you have an open mortgage, you can prepay any amount without a penalty. Most Canadians have closed mortgages, which is where privileges come in.

Privilege typeHow it worksBest for
Lump sumA one-time payment straight to principal, up to your yearly cap, on dates your contract allowsBonuses, tax refunds, an inheritance, a sale of something big
Payment increaseYour regular payment goes up by a set percentage and stays thereA raise, or a debt you just finished paying off
Accelerated frequencyWeekly or biweekly accelerated payments, the equivalent of one extra monthly payment a yearPeople paid every two weeks who want it automatic

Where to find your prepayment privilege

If your lender is federally regulated, such as a bank, the FCAC says your prepayment privileges and prepayment penalties must appear in an information box at the beginning of your mortgage agreement. Look there first. If you cannot find the paperwork, your renewal statement and your lender's online banking usually show it too, or call and ask for four things:

  1. The lump-sum limit and whether it is a percentage of the original amount.
  2. The payment-increase limit.
  3. The dates you can use them: any time, once a year, or only on payment dates or the anniversary.
  4. Whether there is a minimum lump sum.

Worked example: what $10,000 does

Take a mortgage that started at $500,000 and now has a $450,000 balance at 4.5% with 25 years left. The regular monthly payment is about $2,491, and if nothing changes, total interest from here is about $297,200.

MoveTime savedInterest saved
$10,000 lump sum today11 months$19,800
$25,000 lump sum today28 months$47,200
$50,000 lump sum today (the full 10% of $500,000)55 months$87,300
Raise payment 10% (+$249 a month)45 months$51,100
Raise payment 20% (+$498 a month)78 months$86,600

Why so large? Every dollar of prepayment goes to principal, and that principal would otherwise have been charging 4.5% for up to 25 more years. The $10,000 lump sum is not "worth" $19,800 today; it is $19,800 less interest spread over the life of the loan, assuming the rate stays at 4.5%. Rates will change at each renewal, so treat these as directional, not exact.

Five rules people trip on

Options people compare

There is no single right use of spare cash. These are the options people usually weigh, with the trade-off for each. Looni does not recommend one over another.

OptionWhat you getWhat you give up
Lump-sum prepaymentA certain, after-tax return equal to your mortgage rate, and less interest at every future renewalLiquidity: the money is in the house and hard to get back without borrowing
Payment increaseAutomatic, steady progressFlexibility, because it usually cannot be lowered until the term ends
Accelerated biweeklyAbout one extra monthly payment a year, matched to payday. See the biweekly vs monthly breakdownVery little, if your pay is biweekly
Keep it in savings or registered accountsCash on hand for emergencies, and other goalsThe guaranteed interest saving. Investment choices are a question for a licensed advisor

Run your own mix in the calculator above, or open every Looni calculator on the tools page.

Questions people ask

What is a prepayment privilege on a mortgage in Canada?

It is the amount your mortgage contract lets you pay on top of your regular payments without a prepayment penalty. It usually allows a yearly lump sum up to a set amount or percentage of the original mortgage, and an increase to your regular payment by a set percentage. The limits vary by lender.

How much can I prepay on my mortgage without a penalty?

Whatever your contract allows. Many closed mortgages express the lump-sum limit as a percentage of the original mortgage amount per year, so 10% of a $500,000 mortgage would be $50,000 a year. Check the information box at the start of your mortgage agreement or ask your lender.

Do unused prepayment privileges carry over to next year?

Typically no. The Financial Consumer Agency of Canada says most lenders limit prepayments per year and you usually cannot add unused room from earlier years to the current year.

How much interest does a $10,000 mortgage prepayment save?

On a $450,000 balance at 4.5% with 25 years left, a $10,000 lump sum saves about $19,800 of interest and about 11 months of payments, assuming the rate stays the same. The earlier in the amortization you prepay, the bigger the saving.

Can I lower my payment after I use a payment-increase privilege?

Usually not until the end of the term. The FCAC notes that once you increase your payments, you normally cannot lower them until the term ends, so only increase by an amount you can keep paying.

What happens if I prepay more than my privilege allows?

The amount above the privilege can trigger a prepayment penalty. For many fixed-rate mortgages that is the higher of three months' interest or the interest rate differential. An open mortgage has no penalty for prepaying.

Should I make a lump-sum payment before breaking my mortgage?

The FCAC suggests using your prepayment privilege first, because any penalty is then calculated on a lower balance. Some lenders restrict prepayments close to the break date, so ask your lender about timing.

Looni tracks the privilege you are not using

The dashboard reads your mortgage line, shows how much prepayment room is left this year and what it would save, and counts down to the renewal date when everything resets.

Sources

Financial Consumer Agency of Canada, Mortgage fees: Prepayment penalties (definition of prepayment privileges, yearly limits and no carry-over, prepaying before breaking, information box requirement, open mortgages) and Paying off your mortgage faster (lump sums, payment increases that normally cannot be lowered until the term ends, accelerated payments). FCAC Mortgage Calculator. Interest math uses Canadian semi-annual compounding for fixed-rate mortgages.

Important: General information, not financial or mortgage advice. Figures assume a constant rate and are illustrative. Your contract sets your actual privileges, dates and penalties; confirm with your lender before prepaying.