Should I Renew or Refinance My Mortgage? The Real Math for Toronto Homeowners

When your mortgage comes up for renewal, you have three real options. You can renew with your existing lender on the same terms. You can switch to a different lender for a better rate. Or you can refinance — re-open the entire mortgage and restructure it. Each has different costs, different benefits, and the right answer depends on your specific situation. Here's the framework.

Renew vs switch vs refinance — the differences

Renew with current lender

Simplest option. Your existing lender sends a renewal letter (often 30 days before expiry — sometimes less). You sign at the offered rate, the mortgage continues with no break. No legal fees, no appraisal, no qualification re-check.

Downside: lenders often quote their posted rate at first. You may be leaving thousands on the table.

Switch to a different lender

You move your existing mortgage to a competing lender — same balance, same amortization remaining, just a better rate. Costs: usually $250–$500 in transfer fees (sometimes paid by the new lender). New lender does its own qualification check.

Downside: you have to re-qualify under current stress test rules. If your income has dropped, this can be a hurdle.

Refinance (cash-out)

You re-open the entire mortgage. New principal balance (can be higher if you're pulling equity). New amortization (can be longer). New rate, new term. Used for: accessing equity, consolidating debt, extending amortization to reduce payment, funding renovations.

Costs: $1,500–$3,500 in legal fees, appraisal, and potentially a discharge fee from current lender. Full requalification.

When to renew (the simple path)

Renewing is the right move when three conditions are true:

• You don't need to access additional equity.
• You're comfortable with the new monthly payment at current rates.
• You're happy with your current lender's service and products.

Even if you renew, negotiate the rate. Don't accept the first offer. Call your branch and ask for their best rate. Then call a mortgage broker for a competing quote. Bring both to your bank and ask them to match. A 0.20% rate difference on $500K saves $1,000/year for 5 years — $5,000 total for one phone call.

When to switch (the slightly more complex path)

Switching makes sense when you've shopped around and found a meaningfully better rate (say, 0.25% or more) at a competing lender — AND you can re-qualify at current stress test rates. A good mortgage broker does this comparison for you.

Important: when you switch, your mortgage balance and amortization stay the same. You can't pull equity. If you need cash too, you need a refinance, not a switch.

When to refinance (the strategic move)

Refinancing makes sense in five specific situations:

1. You need to reduce monthly payment significantly

Extending amortization from 20 years to 30 years on a $700K mortgage drops your monthly payment by roughly $700. Best for: renewal cycle where the new rate would otherwise create financial stress.

2. You need to consolidate high-interest debt

If you have $40K of credit card debt at 19%, rolling it into a mortgage at 4.5% saves enormous interest. The catch: you're now paying it over 25 or 30 years. Math: $40K at 19% over 5 years vs $40K at 4.5% over 30 years. Don't do this if you'll just run the credit cards back up.

3. You're funding a major renovation

Adding $80K to your mortgage to fund a kitchen + bathroom renovation can make sense if the renovation increases home value by similar or more. Talk to a realtor about whether the renovation is likely to recover its cost at sale.

4. You're helping kids with a down payment

Pulling $200K out of your home's equity to help adult children buy their first home is a common move. Tax-free for you (it's just borrowed against your existing principal residence). They get into the market sooner.

5. You want to invest the equity

More controversial. Some financial advisors recommend pulling equity at low mortgage rates and investing in markets. The math can work — but only if you can tolerate the risk and the cash flow.

The 90-day shopping plan

Whether you're renewing, switching, or refinancing, start 90 days before your renewal date:

• Day 90: get your existing lender's written discharge / renewal offer.
• Day 75: talk to a mortgage broker — they shop multiple lenders.
• Day 60: decide on renewal vs switch vs refinance. Get rate quotes in writing.
• Day 45: sign paperwork.
• Day 0: renewal date. New rate kicks in. First payment 30 days later.

What I tell my own clients

For most GTA homeowners renewing in 2026, the right play is: shop hard, extend amortization to 30 years if the new payment is uncomfortable, lock in a 5-year fixed rate at the best available number. If you need cash for any specific purpose, consider refinancing — but only with a clear plan for how you'll deploy the funds.

I work with two mortgage brokers in Toronto I trust. The conversation is free, no obligation, and I'll give you real input on whether selling instead would be a smarter move.