Prepayment Charge Calculator

Understanding charges that could apply to you.

If you choose to exceed your prepayment privileges during your mortgage anniversary year or decide to pay off your mortgage before your term ends, you may encounter certain prepayment charges. It is important to familiarize yourself with the ways that these charges can be calculated. The helpful worksheet below can give you better insight into possible prepayment charges. Having your mortgage commitment, mortgage renewal agreement or annual mortgage statement handy will help you fill in much of the information required.

Prepayment charge calculator

Please have any of the following items handy for this calculation: your mortgage commitment, your mortgage renewal agreement or your annual mortgage statement.

Estimating Interest Rate Differential (IRD):

Flat Rate Prepayment Estimate:

Some mortgage products may be subject to a flat rate charge. The flat rate can be calculated as follows: 

If you received a cash-back initially on your mortgage or at renewal, you may need to repay a portion of the cash-back amount when you prepay your mortgage in full. 

The amount of cash-back reimbursement is calculated as follows:

Use the online calculator to estimate your prepayment charges. 

There are a number of factors that can affect a prepayment charge.

For the exact cost of prepaying your mortgage, please contact our customer service team at 1.888.488.0794 or send us a message through your My Mortgage account.

Notes:

  • If there are less than 3 months remaining to maturity on a closed mortgage at the time of prepayment, a per-diem prepayment charge, calculated using your current interest rate, applies for the remaining term.
  • For mortgages with terms greater than 5 years, after the 5th year the prepayment charge is calculated using a 3 month interest charge.
  • Please refer to your mortgage documents for your specific prepayment privileges.
 

The above calculation is based on the accuracy and completeness of the data you have entered, is for illustrative and for informational purposes and is not intended to provide specific financial or other advice, and should not be relied upon in that regard.

This calculation assumes a constant interest rate throughout the amortization period and that the interest rate is compounded semi-annually, not in advance. The mortgage payment amount may vary according to certain variables entered in to the calculator and may not provide the precise dollar amount of your mortgage payment. The results will give you a general idea of the basic mortgage amount and mortgage payment amount based upon the information you have entered.

First National does not make any express or implied warranties or representations with respect to any information or results in connection with the calculator.

First National uses reasonable efforts to include accurate and up-to-date information in this calculator, but cannot guarantee that all information is accurate, complete or current at all times.

Please speak with your mortgage broker to assist you with determining what you can afford.

All First National residential mortgage products are subject to its standard lending criteria.

Today's Featured Rate
 
 
Updated September 29, 2026

Rates shown are for high-ratio insured mortgages. Other rates may apply. OAC.

Tips for first-time buyers

Use gross income - that's your total pay before taxes and deductions
Include all debts - car payments, student loans, credit cards, and lines of credit
Heating costs default to $75/month, a common lender estimate for qualification
Down payment under 20%? You'll need mortgage default insurance, which actually gives you access to lower rates

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