Mortgage Break Penalties in Canada — How Much Will It Cost You?

Why Mortgage Penalties Exist

When you break a mortgage before the term ends, your lender loses the interest income they expected. The penalty compensates them for this loss. Understanding penalties before you sign is critical.

Two Types of Break Penalties

3-Month Interest Penalty (Variable Rate Mortgages)

Variable rate mortgages always use 3 months of interest as the break penalty.

Formula: Outstanding Balance × Interest Rate ÷ 12 × 3

Example: $400,000 balance at 3.50% = $400,000 × 3.50% ÷ 12 × 3 = $3,500

IRD — Interest Rate Differential (Fixed Rate Mortgages)

Fixed rate mortgages use IRD, which is calculated as the difference between your contracted rate and the lender's current rate for the remaining term.

Formula: Balance × (Your Rate - Comparison Rate) × Remaining Term

Example: $400,000 balance, 2 years remaining, your rate 5.50%, current 2-year rate 4.50%
$400,000 × 1.00% × 2 = $8,000 IRD penalty

Why Fixed Rate Penalties Can Be Enormous

Big banks often use their posted rates (not discounted rates) for IRD calculations — making penalties 2–5x larger than they should be. Some borrowers have faced penalties of $20,000–$40,000 for breaking a fixed mortgage early.

When Is It Worth Breaking Your Mortgage?

Use our break-even calculator: if your monthly savings from the new rate × months remaining > penalty amount, it's worth breaking.

Example: Penalty $6,000, new rate saves $300/mo = break even in 20 months. If you have 36 months left in your term, switching saves $4,800 net.

How to Minimize Penalties

• Choose variable rate — 3-month interest is much more predictable than IRD
• Avoid big bank fixed mortgages — use credit unions or monoline lenders with fairer IRD calculations
• Port your mortgage — moving to a new home? Many mortgages can be transferred with no penalty
• Wait for renewal — no penalty at all at maturity

⚠️ This article is for informational purposes only. Not financial advice. Canada Mortgage Rates is not a licensed mortgage broker. Always verify with a licensed professional.