What is the difference between capitalisation rate and debt service coverage?

Cap rate (Capitalization Rate) = Net Operating Income ÷ purchase price. It's a property-yield metric that ignores how the deal is financed. Debt service coverage = net operating income ÷ annual mortgage payment. It measures whether the rental income covers the mortgage, lenders underwrite on coverage, not on cap rate. Typical A-lender threshold is 1.20 at the qualifying rate set by OSFI (Office of the Superintendent of Financial Institutions).

What's a "good" cap rate in BC?

There is no benchmark set by law or by a regulator. Cap rates differ by property type, building age, location and how the net income is counted, so compare like with like: the same costs, the same vacancy allowance. A higher cap rate generally means higher yield but also higher risk (older buildings, harder to insure, more vacancy). Cap rate alone doesn't tell you whether the mortgage will qualify, coverage does. Source: CMHC, Rental Market Report, for measured vacancy by area.

What is cash-on-cash return?

Annual pre-tax cash flow: net operating income minus mortgage payments, divided by your actual cash invested (down payment plus closing costs). It measures the return on your actual money down, not on the full property value. A property with a 4% cap rate and 25% down can produce a 6%+ cash-on-cash return because of leverage, but it also produces a negative cash-on-cash if the mortgage payment exceeds NOI.

Are investment properties eligible for mortgage default insurance?

Only in a narrow case. CMHC insures non-owner-occupied rentals of two to four units, priced below $1,000,000, for Canadian citizens and permanent residents, with at least 20% equity and a 25-year maximum amortization. A single-unit investment property cannot be insured, and a rental over $1,000,000 needs a conventional mortgage. If you will live in one unit of a one- to four-unit property, the owner-occupied rules apply instead. Source: CMHC, Mortgage loan insurance for rental investments.

Why does this calculator show debt service coverage at two different rates?

Because lenders underwrite at both. Coverage at the contract rate shows whether the property cash-flows today. Coverage at the stress-test rate (contract + 2 percentage points, or 5.25% floor) shows whether the lender will approve the deal, they want to know you could still cover debt service if rates rose at renewal. A property that passes at contract but fails at qualifying gets declined.

What about capital appreciation?

This calculator focuses on operating returns. Capital appreciation (the property going up in value) is a separate component of total return. Appreciation differs by area and period and can be negative, so the BC Real Estate Association and local real estate boards publish the price history to check. The yield and coverage math here tells you whether the deal pencils out on rental income alone, appreciation is upside on top.

BC Rental Investment Returns

Name: Rental investment returns calculator (BC)
Author: Bronson Job PREC

Yield, debt service coverage and cash-on-cash return on a BC rental.

It’s new construction

Purchase price

Market rent, monthly (all units)

Rent the current tenant pays, if they stay

Down payment (%)

Mortgage rate (% per year, contract)

Amortization (years)

Operating costs: vacancy, strata, tax, insurance, upkeep, management

Vacancy + bad-debt allowance (%)

Strata fees (monthly, $0 for detached)

Property tax (annual)

Insurance (annual)

Maintenance reserve (% of price/yr)

Property management (% of effective gross income)

Capitalisation rate (net operating income / purchase price)

2.94%

Lenders judge a rental on debt service coverage, and most major BC lenders want at least 1.20.

Debt service coverage at your contract rate: 0.60 (below 1.20)
Debt service coverage at the stress-test rate (6.31%): 0.50 (below 1.20)
Cash-on-cash return: −7.20%
Monthly cash flow (after mortgage payment and operating costs): −$1,950

Debt service coverage at the stress-test rate (6.31%) is below the 1.20 most major lenders want. Options: increase the down payment, find a higher-rent property, or look at an alternative lender at a wider spread.

Income, costs and cash invested, line by line

Effective gross income (annual): $59,280
Operating expenses (annual): $24,042
Net operating income (annual): $35,238
Mortgage principal + interest (monthly): $4,887
Annual debt service: $58,640
Down payment: $300,000
Property transfer tax: $22,000
Cash invested (down payment, taxes, legal and adjustments): $325,000

Method: show the math11 steps

Step	Amount
Effective gross income = $5200/mo × 12 × (1 − 5% vacancy)	$59,280.00
Operating expenses (property tax + insurance + maintenance + mgmt + strata)	$24,042.00
Net operating income = effective gross income − operating expenses	$35,238.00
Capitalisation rate = net operating income / purchase price	2.94%
Mortgage at 25% down (semi-annual compounding, 25-yr amort, 4.31% contract)	$900,000.00
Annual debt service (monthly P+I × 12)	$58,640.00
Debt service coverage = net operating income / annual mortgage payments (lenders typically want ≥1.20)	0.60
Stress-test rate = max(4.31% + 2 points, 5.25%) = 6.31%; the lender re-tests coverage at this rate Source	—
Annual pre-tax cash flow (net operating income − mortgage payments)	-$23,402.00
Cash invested (down payment, transfer tax $22,000, legal and adjustments)	$325,000.00
Cash-on-cash return = annual cash flow / cash invested	-7.20%
Total	0.60

Computed from the BC Real Estate Codex · CC BY 4.0

Notes: estimate only, and what this does not consider

Estimate only. Confirm with a licensed professional before relying on this number.

Lender underwriting models vary. The coverage thresholds shown reflect typical major-lender BC bank ranges (≥1.20). Credit unions, B-lenders, and private lenders use different ratios; some impose a 50% opex floor regardless of your numbers, or count rental income at 50%-haircut rates. Get a same-day pre-qualification from a licensed broker before subject removal.

Not investment advice. Past returns do not predict future. Talk to a CPA and a licensed mortgage broker for your actual underwriting position.

How we verify

Try a typical scenario

Yield versus coverage: a South Surrey 4-plex case study

A $1.6M South Surrey 4-plex grossing $7,000/mo looks like a reasonable Lower Mainland yield on a listing sheet. Run it properly. A 5% vacancy haircut leaves $79,800 of effective income; property tax $7,200, insurance $2,400, a 1% maintenance reserve of $16,000 and 8% management of $6,384 take $31,984 of it. Net operating income is $47,816, which on $1.6M is a 2.99% capitalisation rate, not the four-and-a-bit the gross rent suggests. The maintenance reserve and the management fee are what the gross number leaves out, and together they are $22,384 a year.

Coverage is worse. At 25% down ($1.2M borrowed) over 25 years, annual payments are $77,237 at a 4.19% contract rate and $93,765 at the 6.19% stress rate. Debt service coverage is 0.62 and 0.51. Lenders want 1.20. The deal does not get financed.

And leverage cannot rescue it: clearing 1.20 at the stress rate would take a 68% down payment of about $1,090,000, at which point the money is parked rather than working. The binding constraint is the rent, not the mortgage. At $1.6M this building needs roughly $13,000 a month to reach 1.20 coverage at the stress rate with 25% down, so either the price is wrong or the market is, and the honest move is to look where the rent-to-price ratio is structurally higher rather than to hunt for financing that fixes a 2.99% yield.

Common questions about BC rental investment math

What is the difference between capitalisation rate and debt service coverage?
Cap rate (Capitalization Rate) = Net Operating Income ÷ purchase price. It's a property-yield metric that ignores how the deal is financed. Debt service coverage = net operating income ÷ annual mortgage payment. It measures whether the rental income covers the mortgage, lenders underwrite on coverage, not on cap rate. Typical A-lender threshold is 1.20 at the qualifying rate set by OSFI (Office of the Superintendent of Financial Institutions).
What's a "good" cap rate in BC?
There is no benchmark set by law or by a regulator. Cap rates differ by property type, building age, location and how the net income is counted, so compare like with like: the same costs, the same vacancy allowance. A higher cap rate generally means higher yield but also higher risk (older buildings, harder to insure, more vacancy). Cap rate alone doesn't tell you whether the mortgage will qualify, coverage does. Source: CMHC, Rental Market Report, for measured vacancy by area.
What is cash-on-cash return?
Annual pre-tax cash flow: net operating income minus mortgage payments, divided by your actual cash invested (down payment plus closing costs). It measures the return on your actual money down, not on the full property value. A property with a 4% cap rate and 25% down can produce a 6%+ cash-on-cash return because of leverage, but it also produces a negative cash-on-cash if the mortgage payment exceeds NOI.
Are investment properties eligible for mortgage default insurance?
Only in a narrow case. CMHC insures non-owner-occupied rentals of two to four units, priced below $1,000,000, for Canadian citizens and permanent residents, with at least 20% equity and a 25-year maximum amortization. A single-unit investment property cannot be insured, and a rental over $1,000,000 needs a conventional mortgage. If you will live in one unit of a one- to four-unit property, the owner-occupied rules apply instead. Source: CMHC, Mortgage loan insurance for rental investments.
Why does this calculator show debt service coverage at two different rates?
Because lenders underwrite at both. Coverage at the contract rate shows whether the property cash-flows today. Coverage at the stress-test rate (contract + 2 percentage points, or 5.25% floor) shows whether the lender will approve the deal, they want to know you could still cover debt service if rates rose at renewal. A property that passes at contract but fails at qualifying gets declined.
What about capital appreciation?
This calculator focuses on operating returns. Capital appreciation (the property going up in value) is a separate component of total return. Appreciation differs by area and period and can be negative, so the BC Real Estate Association and local real estate boards publish the price history to check. The yield and coverage math here tells you whether the deal pencils out on rental income alone, appreciation is upside on top.

Sources(4)

Also drawn from: Office of the Superintendent of Financial Institutions, Canada Mortgage and Housing Corporation, Canada Revenue Agency.

Guideline B-20: Residential Mortgage Underwriting Practices and ProceduresOSFI, retrieved Nov 6, 2026
Minimum qualifying rate for uninsured mortgages: "The greater of the mortgage contract rate plus 2% or 5.25%"Office of the Superintendent of Financial Institutions, retrieved Nov 6, 2026
osfi.b20.stress_test, v2, in the Codex

Homeowner and Small Rental Mortgage Loan InsuranceCMHC, retrieved Nov 6, 2026
Government Announces Boldest Mortgage Reforms in DecadesGovernment of Canada, retrieved Nov 4, 2026
cmhc.insurance_cap, v2, in the Codex

Spot an issue? Report an inaccuracy. How we verify.

Bronson Job PREC, REALTOR® at Momentum Realty Inc.. GVR Member #6015742 · FVREB Member #FJOBBR

Last reviewed November 6, 2026 by Bronson Job PREC, REALTOR®. Licence CC BY 4.0. How we verify.