Canada · Mortgage
What owning this actually costs each month
25-year amortization. The rate you enter is converted with semi-annual compounding, the usual Canadian convention. We also test the payment at the B-20 qualifying rate.
Example with the default inputs. Change any field to recalculate.
Estimated owner cost: $3,418 a month
That is 35.7% of gross monthly income. This is a calculation, not a lender assessment or a recommendation. At the B-20 qualifying rate of 6.55%, gross debt service (GDS) is 41.4% — above CMHC's 39% maximum for insured mortgages (P&I at the qualifying rate + property tax + heating + half the condo fees).
Day-one cash breakdown
| Deposit | $130,000 |
| Ontario land transfer tax | $9,475 |
OwnerCost sheet
Canada · https://ownercost.com/ca/mortgage/
Price $650,000 · down $130,000 · 4.55% · 25 years
Owner cost $3,418 (P&I $2,893)
Extra $0/mo · paid off in 25.0 years · interest saved $0
Cash to close $139,475
Registry OC-MTG 2.1.0. Planning estimate, not an offer of credit.
What this includes
OwnerCost converts the rate you enter with semi-annual compounding, the usual Canadian convention; check how your lender states its rate. With less than 20% down, the CMHC premium is added to the loan, and the amortization can exceed 25 years (up to 30) only for a first-time homebuyer under CMHC's 4-year test or a new build — a separate question from first-time land transfer tax relief; in Ontario the 8% sales tax on it is paid in cash at closing.
How we calculate
OwnerCost converts the rate you enter with semi-annual compounding, the usual Canadian convention (the Interest Act requires the rate to be stated yearly or half-yearly): monthly rate = (1 + r/2)^(2/12) − 1. Payment = P·i / (1 − (1 + i)^−n). With less than 20% down, the CMHC premium (2.80%, 3.10% or 4.00% of the loan by loan-to-value) is added to the loan. Insured mortgages allow at most a 25-year amortization, or 30 years if at least one borrower is a first-time homebuyer or the home is newly built and never occupied (the premium then rises by 0.20%). Two separate questions: CMHC's first-time test (the 4-year rule) sets the amortization limit; transfer-tax relief uses the provincial test. Insured mortgages need the minimum down payment (5% to $500,000, 10% above, 20% from $1.5m) and a price under $1.5m. GDS = principal and interest at the qualifying rate max(rate + 2, 5.25%) + property tax + heating + half the condo fees, compared with CMHC's 39% limit. The 10-year cash comparison uses two OwnerCost assumptions — a 10-year period and rent rising 3% a year — and counts cash paid on the regular schedule only (the extra-principal input is not included); it is not a buy-or-rent recommendation. Principal and interest are counted only until the loan is repaid (at most 120 months), so a term shorter than 10 years adds no payments after payoff; insurance, property tax and building or owners' fees continue for all 120 months; mortgage insurance stops when its own rule ends it and never after the loan does.
Official sources
- Interest Act (Canada), section 6
- OSFI — minimum qualifying rate (confirmed 29 January 2026)
- CMHC — premium information
- CMHC Purchase — maximum amortization 25 years
- CMHC Home Start — 30-year amortization for first-time buyers and new builds
- Finance Canada — first-time homebuyer and new-build definitions (in force 15 Dec 2024)
- CMHC — requirements (GDS 39%, TDS 44%)
- FCAC — minimum down payment
Rules checked against these sources on 24–25 September 2026.