Costs and closing

Prepayment penalty

The charge for paying off a closed mortgage early: 3 months of interest on a variable, or the greater of that and the IRD on a fixed.

Also called prepayment charge.

Every closed mortgage has a prepayment charge, and the formula depends on the rate type. On a variable-rate mortgage it's 3 months of interest, which is predictable and about the same at every lender. On a fixed-rate mortgage it's the greater of 3 months of interest or the interest-rate differential, and when rates are falling the IRD is almost always larger.

The IRD is where penalties vary, because lenders use different comparison rates. On an ordinary balance with 3 years to run, the posted-rate and discounted-rate methods can differ by five figures.

Ways to reduce it: use your annual prepayment privilege first so the penalty is calculated on a smaller balance, wait until later in the term when fewer months remain, port the mortgage to a new property, or ask about a blend and extend.

On a term longer than 5 years, section 10 of the federal Interest Act caps the charge at 3 months of interest once 5 years have passed.

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Mortgage penalty (IRD) calculator

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Full guide

How your mortgage penalty is calculated: posted vs discounted IRD

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  • Interest-rate differential (IRD)

    A prepayment penalty calculated from the gap between your rate and a comparison rate, applied over the months left in your term.

  • Prepayment privilege

    How much a closed mortgage lets you pay down each year without a penalty, typically 10% to 20% plus a payment increase.

  • Portability

    A feature that lets you move your existing mortgage, rate and term to a new property instead of breaking it.

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