TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Licensed by the Law Society of OntarioFlat fees published upfrontWe reply to messages within 1 business daySign in
Home/Articles/Real Estate
№ 22 Real Estate

Porting a Mortgage in Ontario: Steps, Timing and Legal Issues

Learn how porting a mortgage works in Ontario, how it fits with your sale and purchase closing dates, and what your lender may require of you.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
← All articles
Key takeaways
  • Porting lets you move your existing balance, rate and terms to a new home, but whether you can port, and on what conditions, depends on your lender.
  • Moving to a cheaper home can still trigger a prepayment penalty.
  • If you break the mortgage instead, the penalty is usually the higher of three months' interest or the interest rate differential.

You have found a new home, but your current mortgage has a good rate and you do not want to pay to break it. Porting may let you carry that mortgage over to the new property, and the question is how it fits with your sale and purchase.

Porting is mostly a matter of your contract and your lender's policies, not a single set of Ontario rules. This article explains the general process, the timing problems to plan for and the points worth confirming before you commit.

What porting means

A portable mortgage lets you transfer your existing balance, interest rate and terms to a new home when you sell and buy, which avoids breaking the contract. Whether your mortgage can be ported, and on what conditions, depends on the lender.

Porting does not always avoid every cost. If the new home costs less than the amount of your mortgage, you may still pay a prepayment penalty. The rest depends on your lender and your contract, so confirm the details with your lender before you commit.

The usual steps

No statute sets time limits between selling and buying or requalification rules for porting, so these come from your own contract and your lender. Ask for them in plain terms.

Timing with your closing dates

The biggest practical risk is a gap between closing dates. If your sale closes before your purchase, or the other way around, your lender's conditions may be affected. Lenders often set their own time window for how close the two closings must be, but the length depends on your contract, so confirm it before you sign agreements of purchase and sale.

If the dates cannot line up, ask the lender what happens. Possible answers include a short window, a different arrangement for the gap or losing the right to port. Your lawyer can help you check this against your contract and your closing timeline.

When porting costs you money anyway

Porting is not always penalty-free. If the new home costs less than the amount of your mortgage, you may still pay a prepayment penalty.

ChoiceWhat to know
Port the mortgageKeeps your balance, rate and terms if the lender agrees; conditions depend on the lender
Break the mortgagePenalty is usually the higher of 3 months' interest on what you owe or the interest rate differential
Port to a cheaper homeA penalty may still apply

Federally regulated lenders must set out prepayment privileges and penalties in an information box at the start of the mortgage agreement, so look there first.

Other points to check

If your term is longer than five years, the Interest Act may give you a right to pay off the mortgage after five years from its date by paying principal, interest and three months' further interest in lieu of notice. That right does not apply to a mortgage given by a corporation. Whether it helps you depends on your mortgage, so have it reviewed.

If you cannot port, you may need a new mortgage, and possibly a mortgage broker. Mortgage brokerages, brokers, agents and administrators in Ontario are licensed by FSRA under the Mortgage Brokerages, Lenders and Administrators Act, 2006, and you can check a licence on FSRA's public listing, which FSRA says is more reliable than a printed licence. A brokerage must take reasonable steps to make sure any mortgage it presents is suitable for your needs and circumstances.

Required brokerage disclosures must be made at the earliest opportunity and no later than two business days before you sign the mortgage agreement or instrument, whichever comes first.

If a private lender is your only option, go in carefully. FSRA says private mortgages are generally a short-term option, often for one or two years, and that they are often interest-only with fees often higher than for a traditional mortgage. Borrowers should have an exit strategy and consider independent legal advice before signing.

What to do next

Frequently asked questions

Can every mortgage be ported?

No. Whether a mortgage can be ported, and on what conditions, depends on the lender. Check your mortgage documents and ask the lender before you make an offer.

Is there a law that sets how long I have between selling and buying?

No Ontario statute sets porting time limits or requalification rules, so they come from your contract and your lender's policy. Ask the lender for them in writing.

Will I pay a penalty if I port?

Not necessarily, but you might. If the new home costs less than your mortgage amount, you may still pay a prepayment penalty.

What is the penalty if I break the mortgage instead?

It is usually the higher of three months' interest on what you still owe or the interest rate differential. Your agreement shows the exact method.

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.

This is a real estate question

Start a file online — flat, published fees, reviewed by a licensed lawyer before a dollar is owed.

ContactStart a File →