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Breaking Your Mortgage Early in Ontario: Your Legal Options

Need to sell or refinance mid-term in Ontario? See how mortgage prepayment penalties are calculated, when you can avoid them, and what alternatives exist.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • For a closed mortgage, the penalty is usually the higher of three months' interest on the balance or the interest rate differential.
  • With an open mortgage you can prepay without a penalty.
  • Porting lets you keep your existing rate and terms on a new home, which avoids breaking the mortgage contract.

Life does not always follow the mortgage term. You may need to sell, move for work, or refinance to consolidate debt before the term ends. Whether that is costly depends mostly on what your own mortgage contract says.

This article walks through how penalties are generally calculated, the exceptions, and the alternatives to breaking your mortgage in Ontario. Your lender and your contract set the details, so read both before deciding.

Start with your mortgage contract

Prepayment privileges in a closed mortgage are set out in the mortgage contract. There is usually a yearly limit on extra payments, and not all lenders allow them on closed mortgages. Pull out your mortgage documents and look for the prepayment section, the penalty clause and any porting terms.

If you are having trouble making payments, rather than choosing to leave, contact your bank as soon as you can. Banks may offer relief measures such as waiving prepayment penalties or internal fees, or extending the amortization. These measures are not automatic, and what your lender offers can depend on the type of lender and your situation, so it is worth confirming the details with your lender or a lawyer.

How the penalty is calculated

The penalty for breaking a closed mortgage is usually the higher of three months' interest on the balance or the interest rate differential (IRD). The IRD method depends on your lender's formula and comparison rate, so two lenders can produce very different numbers.

MeasureExample (balance $200,000 at 6%, 36 months left, 4% comparison rate)
Three months' interestAbout $3,000
Interest rate differentialAbout $12,000
Resulting penaltyAbout $12,000, plus a possible administration fee

That example is only an illustration. Ask your lender for a written penalty figure that is good for the date you plan to close.

When you may avoid a penalty

Whether the five-year rule helps you depends on the payment terms in your particular mortgage, so confirm the dates with a lawyer before relying on it.

Alternatives to breaking the mortgage

Selling or refinancing: practical checks

If you sell, you must pay back any home equity line of credit (HELOC). If you refinance, a spouse may need to be involved: a spouse may not mortgage, refinance or put a HELOC on an interest in a matrimonial home unless the other spouse joins in or consents, has released their rights by separation agreement, a court order authorizes it, or both spouses have designated and registered a different property as the matrimonial home. A home can remain a matrimonial home after separation if it was the family residence at that time.

Frequently asked questions

How much will it cost to break my mortgage?

For a closed mortgage the penalty is usually the higher of three months' interest on the balance or the interest rate differential, plus a possible administration fee. Your lender can give you an exact figure in writing.

Is there no penalty on an open mortgage?

With an open mortgage you can make a prepayment or lump-sum payment without paying a penalty, and you can also prepay without penalty at the end of the term.

Can I take my mortgage with me to a new home?

If your mortgage is portable and eligible, you can transfer it to a new home when you sell and buy. Check with your lender, since eligibility is the lender's call.

Do I need my spouse's consent to refinance?

If the home is a matrimonial home, generally yes, unless one of the statutory exceptions applies. A home remains a matrimonial home after separation if it was the family residence at the time of separation, so the consent rule still applies.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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