If you have been reading about investment property analysis, you have encountered both cap rate and cash-on-cash return. They are related but distinct, and using the wrong one at the wrong stage of your analysis leads to bad decisions. Here is a clear breakdown of both, with BC Interior numbers.
Cap Rate: The Debt-Agnostic Screen
Cap rate (capitalisation rate) is calculated as:
Cap rate = Net Operating Income (NOI) ÷ Purchase Price
Net operating income is gross rent minus operating expenses (vacancy, property tax, insurance, management, maintenance) — but crucially, it does not include mortgage payments. Cap rate is completely agnostic to how you finance the purchase.
Example: A Kamloops duplex listed at $680,000 generates $3,800/month in gross rent ($45,600/year). Operating expenses (vacancy, tax, insurance, management, maintenance) total $18,200/year. NOI = $27,400. Cap rate = $27,400 ÷ $680,000 = 4.0%.
Cap rate is useful precisely because it strips out financing. You can compare a property financed at 20% down against one you could buy outright, or compare Kamloops properties against Merritt properties (see my Kamloops vs. Merritt breakdown) on equal terms.
Cash-on-Cash Return: What You Actually Earn on Your Money
Cash-on-cash return is:
Cash-on-cash = Annual Pre-Tax Cash Flow ÷ Total Cash Invested
This one accounts for your financing. Pre-tax cash flow is NOI minus your annual mortgage payments (principal and interest). Total cash invested is your down payment plus closing costs.
Same example, financed: 20% down on $680,000 = $136,000 down. Mortgage on $544,000 at 5.29%, 25-year amortisation = approximately $3,242/month ($38,904/year). Pre-tax cash flow = $27,400 - $38,904 = -$11,504/year. Cash-on-cash on $136,000 invested = -8.5%.
The same property that looked like a 4% cap rate is producing a negative cash-on-cash return once you add the mortgage.
Why the Gap Exists
This is the core issue in BC's current rate environment: when your borrowing rate (5.29%) exceeds your cap rate (4.0%), leverage works against you on a cash flow basis. Every dollar you borrow costs more in interest than the property generates in operating income.
This is not a Kamloops-specific problem — it is a fundamental arithmetic reality in any market where cap rates are compressed below borrowing costs. Vancouver cap rates run 2.5 to 3.5%, which is even worse. Merritt can reach 5 to 7% cap rates, which is closer to the break-even threshold, but still often negative after financing (see the full monthly cost breakdown).
When to Use Each Metric
Use cap rate to screen properties in 60 seconds. If a listing agent gives you the gross rent and you know the purchase price, you can calculate a quick rough cap rate and decide whether it is worth a deeper look. A Kamloops residential property at 4% or above is worth running the full numbers on. Below 3.5%, it is likely a pure appreciation play at best.
Use cash-on-cash to actually decide whether to buy. Once you have a specific property, a confirmed financing rate, and realistic expense estimates, cash-on-cash tells you what return you are actually earning on the cash you are committing. It is the number that connects to your personal financial position.
What BC Interior Investors Are Actually Buying
Most residential investment properties in Kamloops are not positive cash flow when financed at current rates. The investment thesis is different: you are buying an appreciating asset, getting a tenant to cover a large portion of your carrying costs, and building equity through mortgage paydown over time.
The question cash-on-cash helps you answer is: how much am I personally contributing each month, and is that contribution justified by the long-term upside? If the cash-on-cash is -8% but you believe the property will appreciate 4 to 6% annually and you are building $430/month in equity, the overall return picture may still be positive — but you need to run all those numbers together.
One Practical Note
Some investors add principal paydown back into the cash-on-cash calculation to get a "total return on equity" figure. That is a legitimate approach, but it conflates cash flow (which you can spend today) with equity (which you can only access by selling or refinancing). Keep them separate in your analysis so you know exactly what you are dealing with.
For a first BC Interior investment property, I start with cap rate to screen, then use cash-on-cash to size the monthly commitment I am taking on. Both numbers together tell a more complete story than either one alone.