Prepayment impact calculator
Layer lump sums or recurring increases to see how quickly you can retire your mortgage.
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- Save unlimited scenarios and track changes over time
- Compare rate options side by side with broker feedback
- Export reports for underwriting or renewal planning
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Interactive calculator
Prepayment impact calculator
See how lump sums and recurring increases shrink your mortgage faster.
How this calculator works
See how lump-sum or recurring prepayments shorten your mortgage and reduce interest.
Use it to plan accelerated payoff strategies while staying within lender limits.
Inputs you will need
- Current mortgage balance
- Interest rate and term
- Amortization remaining
- Prepayment amount and timing
Assumptions and limitations
- Assumes prepayments are accepted as entered.
- Rates remain constant over the modeled term.
- Results do not include tax implications.
Example scenarios
$15,000 annual lump sum
Estimate years shaved off the amortization.
Monthly top-up
Compare a $150 monthly top-up vs a lump sum.
Related tools
Use this payment output in the next decision
Payment and amortization scenarios matter most when they connect to a rate, a contract strategy, and a broker-reviewed fallback plan if rates move or priorities change.
Guides
Read the Canada-specific playbook before you commit to the next step.
Execution
Use the broker workflow, rates pages, or secure dashboard to move from estimate to action.
Save and compare scenarios
Create a free account to save scenarios, compare options side by side, and share results with your broker team.
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Frequently asked questions
Do all lenders allow prepayments?
Most do, but limits vary by contract. Check your prepayment privilege.
Will this change my payment?
It can reduce amortization or lower interest, depending on lender rules.
Is this the same as refinancing?
No. Prepayments reduce balance without changing the mortgage contract.