Worked example · Verified 2026-09-12

Payment shock on a $280,000 Ontario renewal from 1.99%

This is the small-balance half of the two-thousand-twenty-one origination wave. The household has already paid four or five years of a twenty-five-year clock, so twenty years remain and the outstanding amount is no longer a starter loan but it is not a jumbo either. The coupon they are leaving is the kind of one-handle quote that only existed in that window. Ontario property tax and heating did not fall when the contract rate does, so the shock lands on a budget that has already grown around a cheap debit. This page does not assume they are first-time anything; they are simply coming due.

Outgoing coupon 1.99% and renewal quote 4.79% are pinned so the shock cannot drift when street rates move. Re-run the live renewal calculator against the current sheet before you treat $1,808.34 as an offer. Live rates hub.

Open this example in the live calculator

Computed result

Remaining balance$280,000
Remaining amortization20 years
Outgoing quoted rate1.99%
Outgoing payment$1,414.06Monthly
Pinned renewal rate4.79%
Renewed payment$1,808.34
Payment shock+$394.28per monthly period
First renewed payment — interest$1,106.67
Interest if this rate holds for the remaining amortization$154,001
ProvinceOntario

Re-price the remaining balance, do not restart the clock

A renewal is not a new purchase. The engine holds the remaining amortization at twenty years and only changes the quoted rate. Outgoing payment is the annuity on the same balance at the maturing coupon; incoming payment is the same annuity at the pinned renewal quote. Subtracting those two figures is payment shock. Stay with the incumbent is never a newly underwritten mortgage. An uninsured straight switch has been exempt from the prescribed qualifying rate since late November twenty twenty-four; changing the loan amount, the remaining amortization, or the payment schedule turns the file into a refinance and the test returns.

  1. 01 · Outgoing vs incoming

    $280,000 at 1.99% → $1,414.06. Same balance, 20 years left, 4.79% → $1,808.34. Shock +$394.28.

  2. 02 · First renewed period

    $1,106.67 interest, $701.67 principal. Frequency stays monthly.

What this band means

The outgoing monthly debit is $1,414.06 at 1.99%. The renewed debit is $1,808.34 at 4.79%. Shock is +$394.28 per month — higher than the letter they have been living inside. On a remaining balance of only $280,000 that jump is still a grocery-bill problem, not a “sell the house” problem, which is why this band is easy to dismiss and easy to under-prepare. The first renewed split is $1,106.67 interest and $701.67 principal; the cheap coupon had been retiring principal unusually fast, and that tailwind ends on renewal day. Because the remaining amortization is already twenty years, stretching it further is a refinance, not a renewal, and the qualifying rate comes back. Switching lenders on an uninsured straight switch does not, by itself, re-open that test. Negotiating the incumbent is still the first phone call; the math on this page is what you bring to that call.

A two-thousand-twenty-one insured origination that has since crossed into conventional territory through ordinary amortization. The household budget was built around a one-handle coupon through daycare years. Federally regulated incumbents must send a renewal statement at least twenty-one days before maturity; the one-hundred-eighty-day window is when you actually shop. This is not a HELOC-blend story.

Sensitivity

A further point on the renewal quote moves this small balance less in dollars than the same point on a jumbo remaining loan, but more as a percentage of the household’s current debit. Re-amortizing to twenty-five years would look like relief and would be a refinance. The next balance band on this hub is the four-hundred-thousand remaining file, where the same coupon gap becomes a different budget object.

ChangeResultVersus this page
Renewal rate 5.79%$1,961.26+$152.92 vs this renewal
Renewal rate 3.79%$1,661.61−$146.73 vs this renewal
25-year remaining amortization$1,595.18−$213.16 vs this renewal

Questions that only this band answers

Do I need to pass the stress test to renew this $280,000 Ontario mortgage with my current lender?▾
No. Staying with the incumbent is not a newly underwritten mortgage. The $1,414.06 to $1,808.34 jump is a contract-rate change, not a qualification event. A refinance that pulls equity or restarts amortization is tested. An uninsured straight switch has been exempt from the prescribed qualifying rate since late November twenty twenty-four.
Why is the remaining amortization twenty years on this $280,000 renewal?▾
The original clock is assumed to have been twenty-five years, with five years already consumed. A renewal re-prices $280,000 over the time that is left (20 years). Asking the lender to put twenty-five years back on the clock is a refinance request, not a renewal.
Is this $280,000 remaining balance still high-ratio?▾
Probably not. Five years of payments plus any appreciation usually push a starter origination through the eighty-percent line. This page treats the renewal as a remaining-balance problem and does not add a default-insurance premium. If the property declined and the loan is still high-ratio, the insurer’s rules at switch become the overlay — a different file than this one.

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Last verified: 2026-09-12