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Ontario Mortgage Refinancing: When and How to Refinance

Monika Tarnik-Jedrusiak Monika Tarnik-Jedrusiak
September 20, 2025
4 min read
Updated May 13, 2026

Ontario homeowners sitting on substantial equity have powerful financial options through refinancing. Whether you're consolidating debt, funding renovations, or adjusting your mortgage terms, this guide covers the when, why, and how of refinancing in Ontario.


Why Ontario Homeowners Refinance

Refinancing replaces your existing mortgage with a new one, potentially offering better terms, lower rates, or access to accumulated home equity. For Ontario homeowners who've seen significant property appreciation, refinancing can unlock substantial financial flexibility.

Common refinancing goals include lowering interest rates, consolidating higher-interest debt, funding renovations, or adjusting mortgage terms to better match current financial situations.


When Refinancing Makes Sense

Rate Improvement Opportunities

If current rates are significantly lower than your existing mortgage rate, refinancing may produce meaningful savings. Generally, a rate reduction of 0.50% or more warrants serious consideration.

Debt Consolidation

Rolling high-interest credit cards, car loans, or other debt into your mortgage can dramatically reduce overall interest costs. A $30,000 credit card balance at 19.99% becomes much cheaper at mortgage rates around 5%.

Home Renovation Funding

Accessing equity to finance renovations can improve your living space while potentially increasing property value. This is particularly relevant for older Ontario homes needing updates.

Term Adjustment

Shortening your amortization builds equity faster, while extending it reduces monthly payments. Life changes may warrant adjusting your mortgage to match new circumstances.


Understanding Refinancing Costs

Refinancing involves various costs that must be weighed against potential benefits.

Prepayment Penalties

Breaking your existing mortgage early typically incurs penalties. Fixed-rate mortgages usually face the higher of three months' interest or interest rate differential (IRD). Variable mortgages typically have three-month interest penalties only.

Legal Fees

Expect $1,000-$1,500 for legal processing, title searches, and registration of the new mortgage.

Appraisal Fees

Lenders require current property valuations, typically costing $300-$500.

Discharge Fees

Your existing lender charges a fee to discharge the current mortgage, usually $200-$400.


How Much Can You Access?

Refinancing in Canada allows borrowing up to 80% of your home's current value, minus your existing mortgage balance. For a home worth $800,000 with a $400,000 mortgage, maximum refinancing would allow accessing up to $240,000 ($640,000 at 80% LTV minus $400,000 current mortgage).


The Refinancing Process

Step 1: Assess Your Goals

Clearly define what you're trying to achieve—lower payments, debt consolidation, renovation funding, or other objectives.

Step 2: Calculate Break-Even

Determine how long it takes for refinancing benefits to exceed costs. If you're saving $200/month but paying $5,000 in penalties and fees, break-even is 25 months.

Step 3: Shop for Rates

Compare offers from multiple lenders. Your existing lender may offer retention deals to prevent you from leaving.

Step 4: Apply and Document

Provide income verification, property information, and credit authorization for the new mortgage application.

Step 5: Legal Completion

Your lawyer handles discharging the old mortgage and registering the new one.


What's Next

Ontario homeowners considering refinancing should start by calculating potential savings against all costs involved. Get quotes from multiple lenders, including your existing lender's retention offer. A mortgage broker can help compare options and identify the best path forward.

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Frequently Asked Questions

Refinancing in Canada allows borrowing up to 80% of your home's current value, minus your existing mortgage balance. For a home worth $800,000 with a $400,000 mortgage, maximum refinancing would allow accessing up to $240,000 ($640,000 at 80% LTV minus $400,000 current mortgage).
Refinancing costs are lowest when your term is approaching renewal. If you're mid-term, calculate whether savings outweigh prepayment penalties.
Yes, but options are more limited. Alternative lenders serve borrowers with credit challenges, though at higher rates. Improving credit before refinancing yields better terms.
Typically 30-45 days from application to funding. Complex situations or documentation issues may extend timelines.
It depends on your goals. Refinancing replaces your mortgage entirely, while HELOCs provide revolving access to equity without breaking your existing mortgage. Compare total costs for your situation.