Cap Rate vs ROI in Commercial Real Estate: What Each Measures and When to Use Them

Cap rate and ROI are both used to judge commercial real estate, but they answer different questions. The cap rate measures the income a property produces relative to its price, ignoring how the purchase is financed, so it is used to compare properties and to price them. Return on investment, in its many forms, measures what an investor actually earns on the money they put in, after financing and over time, so it is used to judge a particular investor’s deal. Confusing the two leads to mistakes, such as assuming a high cap rate guarantees a strong return or that a low one means a poor investment. This guide is for Ontario investors and owners who want to use both measures correctly and understand where each one stops being reliable.

What the Cap Rate Measures

The capitalization rate is net operating income (NOI) divided by the property’s price or value. NOI is effective gross income less operating expenses, before debt service and income tax. Because it ignores financing, the cap rate lets you compare a property with others as if each were bought for cash. It is also the tool buyers use to turn NOI into a price: Value = NOI ÷ cap rate. See what is a cap rate in commercial real estate and how to calculate NOI.

What ROI Measures

“ROI” is a family of measures rather than one formula. What they share is that they compare the gain from an investment with the money invested. Common versions include:

• Cash-on-cash return: annual pre-tax cash flow after debt service divided by the cash the investor put in (the down payment and closing costs).
• Total return over a holding period: cash flow plus the gain or loss on sale, and the principal repaid on the mortgage, relative to the equity invested.
• Internal rate of return (IRR): a measure that accounts for the timing of all cash flows over the hold, including the sale.

Because these depend on financing, purchase costs, holding period, leasing costs and resale price, two investors buying the same property can have different ROI while sharing the same cap rate.

A Hypothetical Example

The figures below are an arithmetic illustration only. The purchase price, loan terms and interest rate are assumptions and are not market data.

The cap rate is 6.0%, yet the cash-on-cash return is about 3.5%. The reason is that the assumed borrowing cost is close to the cap rate, so borrowing adds little and the equity earns much less than the property does unlevered. If the interest rate were lower relative to the cap rate, financing would improve the return on equity; if it were higher, it could reduce it. This is why lenders and investors watch the relationship between borrowing cost and cap rate, and why financing terms belong in any ROI analysis. Read how to finance a commercial property in Ontario.

Why the Two Measures Can Point in Different Directions

• Leverage: the more you borrow at a rate below the cap rate, the more financing can lift return on equity, and the reverse if the rate is above it.
• Growth: a property with a lower cap rate but strong rent growth or redevelopment potential may produce a higher total return than one with a higher starting cap rate and flat income.
• Risk: a higher cap rate often signals higher risk, such as shorter leases, weaker tenants or capital needs, rather than a bargain.
• Costs the cap rate ignores: closing costs, land transfer tax, leasing commissions, capital expenditures and income tax do not appear in a simple cap rate.
• Holding period: resale price and the cap rate at exit affect total return, but nobody knows the future exit rate.

Ontario Costs to Include in Your ROI

When you calculate return on a purchase, include the costs specific to the transaction. Ontario land transfer tax applies to the purchaser, and the non-residential provincial rates are 0.5% up to $55,000, 1.0% from $55,000 to $250,000, 1.5% from $250,000 to $400,000 and 2.0% above; Toronto adds a municipal land transfer tax. Legal, due diligence, environmental and lender fees also reduce return. HST may apply to the purchase of commercial real property, and the CRA’s memorandum on commercial real property sales explains how. These costs do not change the cap rate but they change the investor’s actual return.

How to Use Each Measure Well

• Use cap rates to compare properties, to price them from NOI and to test what a buyer’s offer implies, always from verified NOI and supported comparables.
• Use cash-on-cash, total return and IRR to test whether a specific purchase, with your financing and your holding period, meets your objectives.
• Test sensitivity: vary the interest rate, the vacancy, the exit cap rate and the capital spending to see how much the result depends on each assumption.
• Check DSCR to make sure the property can support the loan under stress.

See how cap rates affect the value of your commercial property for the pricing side.

Common Mistakes

• Treating the cap rate as the investor’s return.
• Comparing cap rates between properties with different risk, lease quality or NOI definitions.
• Ignoring closing costs, capital needs and leasing costs in ROI.
• Assuming leverage always improves return.
• Relying on projected rent growth or exit cap rates without evidence.
• Using NOI that omits management or reserves.

Frequently Asked Questions

Is cap rate the same as ROI?

No. Cap rate is NOI divided by price and ignores financing. ROI measures what the investor earns on their own money, and depends on financing, costs and time.

What is cash-on-cash return?

Annual cash flow after debt service divided by the equity invested, a measure of first-year yield on the investor’s cash.

Can a high cap rate be a bad investment?

Yes. A high cap rate can reflect higher risk, such as short leases, weak tenants, deferred capital or a weak location.

Why does financing change ROI but not cap rate?

The cap rate is calculated before debt service, while ROI measures the return on the investor’s equity after financing costs.

What is DSCR?

Debt service coverage ratio, NOI divided by annual debt service. Lenders use it to test whether a property can support a loan.

Which measure should a seller care about?

Sellers should understand cap rates, because buyers use them to price the property, and should also understand what returns buyers need after financing.

Conclusion

Cap rate tells you what a property earns relative to its price; ROI tells you what an investor earns on their capital after financing, costs and time. Use the first to compare and price, the second to test a specific deal, and stress both with realistic assumptions. Before acquiring a commercial property, investors should understand not only the asking price, but also the property’s income, leases, expenses, physical condition and future potential. CapRate.ca works with commercial property buyers and sellers across the GTA and Southern Ontario.

Sources and Further Reading

• Government of Ontario: Calculating land transfer tax
• City of Toronto: Municipal land transfer tax rates and fees
• Canada Revenue Agency: GST/HST Memorandum 19-4-1, Commercial Real Property Sales and Rentals

The figures in the table are hypothetical illustrations, not market data or investment advice. This article is general information and is not legal, tax, accounting or financial advice.