
The estimated mortgage prepayment / refinance penalty on Closed Term Mortgage is:
The greater of three month’s interest OR the interest rate differential for the remaining mortgage term
THREE MONTHS INTEREST PENALTY
= (Outstanding Mortgage balance * Existing Mortgage Interest Rate * 3) / 1200
For example: If John’s mortgage balance is $50000 at a rate of 6% p.a., then using above formula closest estimated penalty would be (50000 * 6 * 3) / 1200 = $750
INTEREST RATE DIFFERENTIAL (IRD)
= (Outstanding Mortgage balance * (Existing Rate – Current Rate) * Remaining term of mortgage in Months) / 1200
.
For example: If John’s mortgage balance is $50000 at a rate of 6% p.a. and he wants to refinance the mortgage at a rate of 4.5 p.a. and has remaining term of 2 years, the closest estimate of penalty using above formula would be (50000 * 1.5 * 24) / 1200 = $1500
Do not assume the same wording means the same calculation with different lenders. It is as clear as mud. Some lenders use posted rates for their IRD calculation and some use discounted rates. Variable-rate mortgages do not have IRD penalties. Lenders are not consistent in how to use and when to use above methods of penalties. This problem will persist until the laws in Canada are changed to require consistency on how lenders charge mortgage penalties. Always consult your lender to get exact amount of penalty before making a decision to refinance



