Capitalization rate — “cap rate” — is the single most-referenced number in commercial real estate investment conversations, and also one of the most commonly misunderstood. It’s a useful comparison tool, but it’s not a complete measure of a property’s value or an investment’s quality on its own. Here’s what it actually is, and where its limits are.
The Formula
Cap rate is calculated as:
Cap Rate = Net Operating Income (NOI) ÷ Current Market Value (or Purchase Price)
NOI is the property’s annual income after operating expenses, but before debt service (mortgage payments) and before capital expenditures. If a property generates $80,000 in NOI and is priced at $1,000,000, its cap rate is 8%.
The formula can also be rearranged to solve for value if you know the NOI and a target cap rate — which is exactly how it’s used in the income approach to valuation:
Value = NOI ÷ Cap Rate
What Cap Rate Actually Tells You
At its core, cap rate is a snapshot of unleveraged return — what percentage return the property generates on its own, independent of financing. This makes it useful for one specific purpose: quickly comparing the relative pricing of similar properties without needing to know each buyer’s individual financing terms.
A lower cap rate generally reflects lower perceived risk and/or stronger growth expectations — investors are willing to accept a smaller initial return in exchange for perceived stability (think: a long-term lease with a strong national credit tenant). A higher cap rate generally reflects higher perceived risk or a market with less competition for that asset type — investors want more return to compensate.
Why Cap Rate Isn’t the Whole Story
It ignores financing. Two identical properties bought with different loan terms will produce very different actual cash-on-cash returns to the investor, even though their cap rates are identical. Cap rate tells you about the property; it doesn’t tell you about your specific deal.
It’s backward- or current-looking, not predictive. Cap rate is typically calculated using in-place or trailing NOI. It doesn’t account for upcoming lease expirations, planned capital improvements, or market rent growth — all of which affect what the property is actually worth to you as an investor over your hold period.
It moves with the broader capital markets. Cap rates across an entire market or asset class shift with interest rates, lending conditions, and investor demand — sometimes independent of anything happening at the property level. A cap rate that looked attractive eighteen months ago may not reflect current market pricing today, which is exactly why we don’t publish static cap rate figures in our content — a number that’s accurate today can be stale within a quarter.
It doesn’t capture tenant or lease quality directly. Two properties can show the same cap rate on paper while carrying very different risk — one leased to a national credit tenant with 12 years remaining, the other to a regional operator with 18 months left on the lease. The cap rate alone won’t reveal that difference; the lease abstract will.
Cap Rate vs. Cash-on-Cash Return
Where cap rate measures unleveraged return on the whole property, cash-on-cash return measures the return on the actual cash you put into the deal, accounting for financing. If you finance most of a purchase, your cash-on-cash return can be meaningfully higher (or lower) than the property’s cap rate, because leverage amplifies both gains and risk. Investors typically look at both figures together — cap rate for market comparison, cash-on-cash for a picture of what the deal actually returns to them personally.
How Investors Actually Use Cap Rate
In practice, cap rate functions less as a precise valuation tool and more as a sorting and comparison mechanism:
- Quickly screening a batch of listings to see which are priced in line with the market
- Comparing similar asset types (say, two NNN retail properties) on a level playing field
- Communicating pricing expectations between buyers, sellers, and brokers using shared shorthand
- Reverse-engineering an offer price from a target return, once NOI is known
It’s rarely the only number serious investors look at before making an offer — lease terms, tenant credit, physical condition, and market fundamentals all get evaluated alongside it.
Where This Leaves You as a Buyer or Seller
If you’re evaluating a specific property, the useful next step isn’t researching a generic market cap rate range — it’s getting a read on where that specific asset, in its specific submarket, with its specific tenant and lease terms, is actually priced right now. That’s a conversation, not a published number.
Talk to us about evaluating a specific investment property
Frequently Asked Questions
What’s considered a “good” cap rate? It depends entirely on asset type, location, tenant credit, and lease term — a good cap rate for a single-tenant credit NNN property looks very different from a good cap rate for a value-add retail center. Rather than a general answer, this is best evaluated property by property.
Does a higher cap rate mean a better investment? Not necessarily — a higher cap rate often signals higher risk (weaker tenant credit, shorter lease term, secondary location, or more management intensity), not simply a better deal. Risk and return typically move together.
Is cap rate the same as ROI? No. Cap rate measures unleveraged return on the property itself; ROI (and cash-on-cash return specifically) accounts for your actual invested capital and financing, which can differ significantly from the property’s cap rate.
How is cap rate used when selling a property? Sellers and their brokers often use recent comparable sales’ cap rates, combined with the subject property’s own NOI, to arrive at a supportable asking price range — this is part of what goes into a Broker Opinion of Value.
Thinking about NNN or net-leased investment property specifically? See What Is a Triple Net (NNN) Lease? or explore our investment property brokerage services.