Better Rates — Mortgage

Objective — pay less interest on a mortgage the borrower already holds, by moving it to a lower rate at renewal or by switching mid-term where the savings exceed the breakage cost.

Risk level — -1 — Negative risk. Risk justification — no new debt is taken on and no market exposure is added; a strictly lower rate on the same principal leaves the borrower better off in every future state. Benefit justification — unverified — needs Talbot. Jurisdiction — Canada. U.S. applicability unverified — needs Talbot until sdc-risks-us-compliance-research runs.

Prerequisites

• An existing mortgage.
• For a mid-term switch: knowledge of the prepayment/breakage penalty in the current contract.

Mechanism

The rate on an existing mortgage is repriced — at renewal (no penalty, the natural decision point) or mid-term by breaking and re-signing elsewhere (penalty applies). Principal, amortization and the borrower’s market exposure are unchanged; only the interest rate moves.

Benefits

• Directly reduces interest paid on the largest debt most households carry.
• Requires no leverage decision, no risk-tolerance conversation and no suitability gate — this is the one rung where a forcing mechanism is permitted (SDC/Risks/JOB_DESCRIPTION.md).
• Broadest possible reach: everyone with a mortgage qualifies.

Risks

None to the borrower’s risk position. The only exposure is transactional: paying a breakage penalty that exceeds the interest saved.

Failure modes

• Breaking mid-term without computing the penalty against the savings — the switch costs more than it saves.
• Auto-renewing at the incumbent lender’s posted offer without shopping — the default outcome, and the one this strategy exists to displace.
• How often Canadian borrowers auto-renew without shopping: roughly 70% sign the bank’s first offer, against bank pricing 0.20–0.75% above market and shopper savings of 30–60bps. Sourced 2026-09-22 from market-drop-wins-master-log-v2 §8. (Previously unverified — needs Talbot; mBR’s rate research remains the place to refresh it.)

Costs

Discharge/assignment fees, appraisal, legal, and any prepayment penalty on a mid-term break. Amounts unverified — needs Talbot.

Tax considerations

None in the ordinary case: interest on a personal-residence mortgage is not deductible in Canada (Core/_WorkingOn/Research/canada-investment-taxation.md §6.7, which contrasts this with the U.S.). Where the mortgage is part of a Smith Manoeuvre structure, the deductible side is the HELOC, not the mortgage.

Who it may suit

Anyone holding a mortgage, at any income level — particularly at renewal, when there is no penalty and the decision is being made anyway.

Who should avoid it

Nobody avoids the strategy. A borrower should decline a mid-term switch when the penalty exceeds the savings over the remaining term.

Implementation outline

1. Establish the current rate, remaining balance, remaining term, and (for a mid-term move) the penalty formula.
2. Compare against live market rates.
3. Compute total cost of switching against total interest saved over the remaining term.
4. Act at the renewal date if the mid-term arithmetic does not clear.

Evidence status

documented — the strategy and its zero/negative-risk classification are stated in Better-Rates-Strategy. The rate-comparison mechanics carry over from mBR’s rate-intelligence work. No SDC-specific rate-comparison build exists yet (Better-Rates-Strategy, Open work).

Counterarguments

• The saving is small relative to leverage strategies. True per dollar of attention — and irrelevant, because it is certain and universally applicable where leverage is neither.

Variants

• Renewal shopping (no penalty) · mid-term switch (penalty) · blend-and-extend with the incumbent lender.

The Market Drop Wins fold-in — decided 2026-09-22

Market Drop Wins’ T1-7 Mortgage refinance is this record, conditioned on a decline. No new record is created — a decline-conditioned version of an existing mechanism is a variant. It contributes four things this record did not have:

• The penalty formula, named. The Canadian penalty is the greater of three months’ interest or the IRD, and “big-bank posted-rate calculations can produce penalties several times larger than monoline methods on identical mortgages.” That closes part of this record’s second Open Question — the lender-type spread is now sourced in kind, though not in dollars.
• Blend-and-extend is no longer unsourced in principle. Reported break-fee reductions of up to ~90% via IRD reset, individual cases only — so it is a real lever with no reliable central estimate. Never blend and extend without running the arithmetic: Market Drop Wins lists doing so on its Harmful list, because it can lock a worse rate over a longer term.
• The auto-renewal gap, quantified. Roughly 70% of Canadians sign the bank’s first offer; banks price 0.20–0.75% above market; shoppers save 30–60bps. That answers this record’s unverified — needs Talbot under Failure modes, from a named source.
• A decline-type caveat. Refinance-into-a-lower-rate is Type A/D only — in a Type B (inflationary) decline, rates rise. See variable-rate-relief, which carries the same qualifier. This record itself stays always, because shopping a renewal is worth doing in any environment; only the decline-amplified version is rate-dependent.

One adjacent finding belongs to a different suite and is recorded here so it is not lost: straight switches have been exempt from the OSFI stress test since November 2024, which materially widens who can move lenders at renewal.

Source: market-drop-wins-library-v2 T1-7 and the Harmful list; market-drop-wins-master-log-v2 §8.

Related strategies

better-rates-heloc · better-rates-consumer-debt · better-rates-investment-loan · smith-manoeuvre

Sources

• Better-Rates-Strategy — SDC’s positioning of Better Rates as the zero/negative-risk first rung
• SDC/Risks/JOB_DESCRIPTION.md — the constraint permitting forcing mechanisms at this tier only
• Core/_WorkingOn/Research/canada-investment-taxation.md §6.7 — Canadian non-deductibility of personal mortgage interest
• MBR/_WorkingOn/Research/Rate-Comparison-Providers.md — the rate-comparison provider landscape
• market-drop-wins-library-v2 — T1-7, and the Harmful list entry “blending and extending without running the arithmetic”
• market-drop-wins-master-log-v2 §8 — penalty formula, blend-and-extend reductions, auto-renewal and bank-pricing figures, OSFI straight-switch exemption

Open questions

• Which Canadian rate sources SDC would use, given no SDC-specific build exists.
• Typical breakage-penalty magnitudes by lender type in dollars. The formula and the big-bank-versus-monoline direction are now sourced; the magnitudes are not, and a micro-app needs them.
• Whether the mortgage-tier pricing work parked in market-drop-wins-master-log-v2 §6 (SD-13, the insurable mortgage tier) belongs to this record or to its own — the source says it “belongs to the Smart Debt mortgage suite”, and the MG group prefix is reserved and still unused.