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Calculate Your Lender-Switch Savings: A 5-Step Break-Even Guide for BC Homeowners at Renewal
By Javan Wyker profile image Javan Wyker
3 min read

Calculate Your Lender-Switch Savings: A 5-Step Break-Even Guide for BC Homeowners at Renewal

Most lenders send your renewal letter 4 to 6 weeks before your term ends, but you can start shopping for rates up to 120 days out. That window is long enough to run the math on whether moving your mortgage is worth it.

Here's what to calculate before you sign with your current bank or switch to a new one.

Step 1: List Every Cost of Moving

Your current lender charges a discharge fee to release the mortgage. In BC, lenders are capped at $75 for the discharge fee itself, though you'll also pay legal and registration costs. The new lender usually covers legal fees for a standard switch, but not always. If your mortgage is registered as a collateral charge, common with TD and Scotiabank, you need a lawyer or notary to register the new charge. That costs $600 to $1,200.

Some lenders waive the appraisal. Others don't. Budget $300 to $500 if you have to pay it yourself.

Add those line items. If the total is $850, that becomes your recovery target.

Step 2: Calculate Your Monthly Interest Difference

Take your current renewal rate and the competing offer. Work from the exact balance you'll carry into the new term.

A $500,000 mortgage at 4.8% costs roughly $2,000 per month in interest. At 4.6%, it's $1,917. The difference is $83 monthly, or just under $1,000 in year one.

At $83 per month, you recover $850 in switching costs in 10 months. After that, every month is net gain.

If the gap is smaller, say 0.10%, or $42 monthly, the same $850 takes 20 months to recover. You break even halfway through year two.

Step 3: Check the Fine Print on "Free Switching"

Most BC lenders advertise free switches. That means they cover standard legal fees and sometimes the discharge from your old lender. Read the commitment letter. Many include a reinvestment clause: if you break the mortgage early (selling the house, refinancing, or paying it off within the first 36 months), you repay those covered costs.

A Courtenay homeowner switching to a credit union with $1,200 of covered legal fees who sells 18 months later may owe $1,200 back at discharge. Factor that risk if you're considering a move or major renovation within three years.

Step 4: Compare Total Five-Year Cost, Not Just Rate

A 4.5% rate that costs $1,500 upfront versus a 4.6% renewal with zero cost can flip at different time horizons.

Over 60 months, the 4.5% mortgage saves roughly $2,500 in interest on a $500,000 balance. Subtract the $1,500 in upfront costs. Net gain: $1,000 over five years, or about $17 monthly.

If you plan to move, refinance, or pay down the mortgage aggressively in year two or three, the lower rate may cost you more.

Step 5: Weigh Non-Rate Factors That Matter to You

Some credit unions in BC offer more flexible terms for self-employed borrowers or easier approval for adding a co-applicant mid-term. If your income structure changed since you first qualified, that flexibility may be worth a 0.05% higher rate.

Default-insured mortgages (CMHC, Sagen) carry the insurance forward when you switch, provided the loan amount and amortization stay the same. Changing either triggers a new insurance premium, which can add thousands to the upfront cost.

If the property is a rental or you're self-employed, confirm the new lender's appetite for your file before you commit. A declined application three weeks before your term expires leaves you accepting whatever renewal rate your current lender offers.


The math is straightforward. List the costs, divide by the monthly savings, and you have your break-even point in months. Anything past that month is money you keep.

If the number is under 18 months and you're confident you'll hold the property through the full term, switching usually pays. If it's over 30 months or the savings are marginal, staying put costs you less time and carries less refinancing risk.

Run the calculation before you sign the renewal slip. Most BC homeowners don't, and their lender counts on it.


Sources

  1. BNN Bloomberg - Christopher Liew: Are you ready for your mortgage renewal? - 2026-07-27. https://www.bnnbloomberg.ca/business/real-estate/2026/07/27/christopher-liew-are-you-ready-for-your-mortgage-renewal/
  2. Michael Friedman AMP - Understanding Mortgage Discharge Rules in British Columbia - 2024-08-15. https://michaelfriedmanamp.com/understanding-mortgage-discharge-rules-in-british-columbia/
  3. Lending Hub - Mortgage Discharge Fee in Canada (2026): Bank Fees & Total Cost - 2026-09-15. https://lendinghub.ca/blog/mortgage-discharge-fee-in-canada-complete-cost-guide