Renewal, switching, and refinancing: compare the right offers

Renewal, switching and refinancing describe different financing requests. Compare offers for the transaction you actually need, with the same balance, remaining amortization and comparison period. A lower payment or headline rate can conceal a longer repayment schedule, added debt or a cost of moving.

There is no useful universal rule that renewal rates must beat refinance rates. The answer comes from equivalent written offers and the cost of carrying each loan.

Name the transaction first

Renewal replaces the agreement for the next term when the current term expires. The mortgage balance still needs repayment. Switching moves the loan to another lender; a straight switch generally preserves the existing balance and remaining repayment period. Refinancing changes the financing arrangement, such as borrowing additional money or extending repayment, and can occur at or before maturity.

Labels used in a conversation are insufficient. State the amount to be advanced, whether fees enter the new principal, whether cash goes to you, the remaining amortization and the funding date. A lender can then identify the applicable underwriting and pricing category.

FCAC’s renewal guidance recommends shopping before maturity, negotiating and checking switching costs. A new lender must approve the application. It also identifies potential discharge, registration, appraisal and administration costs. Ask for amounts and who pays them.

Switching does not always mean the prescribed stress test

As checked October 1, 2026, OSFI’s November 21, 2024 letter removes its prescribed minimum qualifying rate for an eligible uninsured straight switch at renewal between federally regulated institutions. The letter covers stand-alone amortizing, non-readvanceable mortgages outside combined loan plans. Remaining contractual amortization cannot increase and equity takeout is excluded. Its footnote permits up to CAD 3,000 added to principal for related transaction costs.

That exception is not automatic approval. The receiving lender still assesses repayment capacity and applies its underwriting policy. A refinance outside that scope should not be described as exempt merely because it also changes lenders.

For most newly underwritten uninsured residential borrowers at federally regulated lenders, the current OSFI minimum qualifying rate is the greater of contract rate plus two percentage points or 5.25%. This is a qualification test, not the interest charged. Confirm applicability and recheck the rule when obtaining an offer.

Compare the same loan before adding cash

Suppose a hypothetical rental mortgage reaches renewal with CAD 400,000 outstanding and 25 years remaining. Compare two fixed-rate, monthly-payment offers over a 36-month term. Both quote nominal annual rates compounded semi-annually. There is no additional borrowing, insurance premium, tax model or optional payment. Switching costs are paid from cash, not added to the loan.

These invented offers are not available rates. Monthly rates are calculated as $(1+r/2)^{1/6}-1$, where $r$ is the nominal annual rate as a decimal. The payment schedule then applies each month’s interest to the opening balance and uses the rest of the payment to reduce principal. Displayed totals use unrounded calculation values.

The switch reduces monthly cash outflow by about CAD 90.24. But its economic financing saving is larger than the difference between payments alone, because it also repays more principal.

Interest saving is CAD 57,540.81 − CAD 52,886.09 = CAD 4,654.72. Deducting the stipulated CAD 1,000 net cost leaves CAD 3,654.72 over 36 months. This nominal, before-tax comparison excludes the time value of money and any subsequent term. It assumes you keep the loan for the entire period and incur no other differing costs.

An equivalent check is total payments plus ending debt plus net costs. Including ending debt prevents slower repayment from masquerading as a saving. Do not count principal again as an expense after using this check.

A longer amortization changes the question

If a refinance lowers the payment by extending repayment to 30 years, its payment is no longer directly comparable to these 25-year offers. Recalculate interest and ending debt over the same horizon. You might value cash relief, but it needs its own assessment rather than being called free savings.

If you take out CAD 50,000, compare the financing cost of that larger loan and what you will do with the money. The advance is borrowed cash. It is not a rebate or rental profit. See taking equity out of a rental for that distinction.

Get a quote that matches rental use

Give each lender the same rental status, unit count, borrower structure, balance, term, amortization and funding date. Confirm whether a quoted rate applies to that application rather than an advertised owner-occupied product. Compare rate, fees and conditions together.

If someone reports a rental surcharge, request the written adjustment for your product and date. An individual quote does not establish a bank-wide surcharge. Similarly, one favourable renewal offer does not prove renewal always prices below refinance.

Several months before maturity, collect matching offers and the current loan’s discharge details. Confirm any other borrowing secured by the same charge that must be resolved on transfer. If moving before maturity, obtain the break-cost quote before calculating savings.

Next, use the refinance negotiation checklist and portfolio lender questions to verify credits, qualification and capacity in writing.

Sources

• FCAC — Renewing your mortgage. Current page checked. Accessed October 1, 2026.
• OSFI — Uninsured straight switches and portfolio LTI limits. November 21, 2024 letter, directly rechecked 2026-10-01. Accessed October 1, 2026.
• OSFI — Minimum qualifying rate for uninsured mortgages. Current page directly checked 2026-10-01; volatile rule recheck before publication. Accessed October 1, 2026.