Calculator Refinance Headroom
Find out how much you can actually refinance in Canada, and which limit stops you first — the 80% loan-to-value ceiling in the Bank Act, or your income under the stress test. Also shows whether one of the two named insured paths above 80% is open to you.
Refinance Headroom Calculator
Find out how much you can actually refinance in Canada, and which limit stops you first — the 80% loan-to-value ceiling in the Bank Act, or your income under the stress test. Also shows whether one of the two named insured paths above 80% is open to you.
Current Loan-to-Value
70.0%
Maximum Conventional Refinance (80%)
$640,000
Headroom From Equity
$80,000
Qualifying Rate
6.5%
Maximum Loan Your Income Supports
$630,089
Headroom From Income
$70,089
What You Can Actually Refinance
$70,089
What Stops You First
Income
GDS at Current Balance
34.6%
TDS at Current Balance
40.2%
Qualifies at Current Balance
Yes
Which Path
None — no insurer publishes a refinance above 80% for this purpose
Path Ceiling
0.0%
Maximum Loan Under That Path
$0
Extra Borrowing Under That Path
$0
Mortgage Insurance Premium
$0
Monthly Payment at Maximum
$3,484
Estimates only, not a quote or an approval. The 80% conventional refinance ceiling is statutory (Bank Act s.418(1)); the paths above it are insurer programs whose terms change and whose availability varies by lender. GDS 39% and TDS 44% are the insured-mortgage limits — some lenders apply tighter ratios, and uninsured lending policy varies. Condominium fees (lenders typically count 50%) and secondary-suite rental income offsets are not modelled here, and both can move your ratios materially. The equity buy-out path exceeds 80% because it is structured as a purchase transaction, not a refinance. All payments use Canadian semi-annual compounding per the Bank Act. Confirm your numbers with a licensed mortgage professional.
All calculations use Canadian semi-annual compounding per the Bank Act. These results are estimates for educational purposes only and do not constitute financial advice. Speak with a licensed mortgage broker for advice specific to your situation.
API Access for Developers & AI Agents
This calculator is available as a free JSON API. AI agents, chatbots, and developers can send mortgage data and get instant results.
POST /api/calculate/refinance-headroom
{
"homeValue": 800000,
"mortgageBalance": 560000,
"grossAnnualIncome": 150000,
"rate": 4.49
}
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Open →Estimates only, not a quote or an approval. The 80% conventional refinance ceiling is statutory (Bank Act s.418(1)); the paths above it are insurer programs whose terms change and whose availability varies by lender. GDS 39% and TDS 44% are the insured-mortgage limits — some lenders apply tighter ratios, and uninsured lending policy varies. Condominium fees (lenders typically count 50%) and secondary-suite rental income offsets are not modelled here, and both can move your ratios materially. The equity buy-out path exceeds 80% because it is structured as a purchase transaction, not a refinance. All payments use Canadian semi-annual compounding per the Bank Act. Confirm your numbers with a licensed mortgage professional.