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Published June 6, 2023
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Understanding Open and Closed Mortgages

Choosing between an open and closed mortgage comes down to one big question — would you rather have a flexible contract or cheaper interest rates?

Whether you’re applying for a new home loan or renewing your current one, you need to decide if you want an open or closed mortgage.

Closed mortgages tend to come with lower interest rates than open mortgages, but they also offer less prepayment flexibility and can cost you much more if life throws you a curveball and you have to break your mortgage.

“Closed vs. open” is an important mortgage choice, so you’ll want to educate yourself about each option before it’s time to make a decision. 

What is a closed mortgage?

With closed mortgages, once the terms and conditions are set, they are closed — you can’t change or break them without paying a penalty.

The duration of the mortgage term, or how long you’re locked into your mortgage contract, is up to you. It can range from six months to 10 years depending on the options offered by your lender, but most Canadians opt for a five-year term.

Even though your mortgage is closed, your original terms will likely provide some prepayment options. For example, you might be able to prepay up to 20% of the original principal amount of your mortgage once a year. However, if you need to move or sell your home before the end of the term, you’d likely be forced to break the terms of your mortgage contract. That’s when you’d be hit with fees and prepayment penalties.

Closed mortgage prepayment penalties 

  • If you break a closed fixed-rate mortgage, you’ll likely be charged the interest remaining for the term, which is based on a calculation called the interest rate differential (IRD). The earlier into a term you break a closed fixed-rate mortgage, the higher your penalty will be.
  • If you break a closed, variable-rate mortgage, your pre-payment penalty will typically be the equivalent of three months’ interest.

The penalties for breaking a closed mortgage can be steep since they’re a way for lenders to recuperate lost income and continue providing mortgages with low rates.Those low interest rates are why most homeowners go with closed mortgages, but the prepayment penalties make them a bit of a gamble.

Pros and cons of a closed mortgage


  • You’ll pay lower mortgage rates compared to open mortgages.
  • Lenders may offer prepayment and lump-sum payment options.


  • There’s a limit to how much you can prepay, if you can at all.
  • You may pay huge penalties if you need to break your mortgage.
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What is an open mortgage?

Open mortgages are much more flexible than closed mortgages. Not only can you choose to increase your regular payments, but you can also make additional lump-sum payments whenever you want without paying a penalty. Doing so can shorten your amortization period, or how long it takes you to pay off your mortgage, and save you some real money.

But this freedom comes at a cost — the interest rates on open mortgages can be significantly higher than closed mortgages. Paying more interest for an open mortgage may not seem to make financial sense, but there are a few situations where it could be beneficial. 

For example, if you’re expecting a financial windfall or think you may need to sell your home before the end of the term, an open mortgage could save you from a prepayment penalty.. That said, you may need to pay an administration charge to get released from your open mortgage, so be sure to familiarize yourself with its terms and conditions before you sign.

Pros and cons of an open mortgage


  • There’s no penalty when increasing your regular payments.
  • There’s no charge when you make lump-sum payments.
  • Refinancing can be cheaper since you’re not dealing with the penalties related to closed mortgages.


  • You’ll pay higher mortgage rates compared to closed mortgages.

How to choose between open and closed mortgages

When deciding between open and closed mortgages, ask yourself the following questions:

  • Am I expecting an inheritance or large sum of cash in the near future that I could use to pay off my mortgage ahead of schedule?
  • Will I likely move or sell the home before my mortgage term ends?
  • Might my household income increase to the point where I could make bigger monthly mortgage payments?

If you answered yes to any of these questions, an open mortgage could help you avoid high fees when breaking your mortgage.

You could also consider a short-term convertible mortgage instead. Convertible mortgages typically last for six months and offer interest rates somewhere between those of closed and open mortgages. If you take out a convertible mortgage, you can extend it at the new rate as needed. Then once your situation is more settled — or interest rates fall — you can lock into a longer-term option.

Most homeowners expect to stay put for the length of their mortgage term, so they’re more than happy to take the lower rates that come with a closed mortgage. Regardless of what mortgage product you go with, you need to make sure you understand the terms and conditions so there are no surprises if your circumstances — and mortgage needs — change.

Frequently asked questions about closed vs. open mortgages

What happens if I break a closed variable-rate mortgage?

Breaking a closed variable-rate mortgage will generally result in a prepayment penalty equal to three months’ interest. It’s far less expensive than breaking a closed fixed-rate mortgage.

Are open mortgages better than closed mortgages?

An open mortgage is only better than a closed mortgage if it fits your plans as a homeowner. If you might move, sell your home or be able to pay off more of your mortgage before the end of your term, an open mortgage could be the better choice, even if you might pay more in interest.


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