Direct Answer
The cap rate (capitalization rate) is a property's net operating income (NOI) divided by its current market value or purchase price, expressed as a percentage. It is used to estimate property values and compare relative pricing across real estate transactions. A lower cap rate implies a higher price paid per dollar of NOI, commonly associated with lower-risk, higher-quality properties or markets, while a higher cap rate implies a lower price paid per dollar of NOI, commonly associated with higher perceived risk or less desirable markets. These associations are general tendencies, not fixed rules, and vary by property type, market, and financing environment.
Cap rate is one piece of REIT analysis. For how it fits alongside FFO, AFFO, NOI, occupancy, and the broader choice between direct property, public REITs, and real-estate funds, see Swoopr's Real Estate & REIT Investing hub.
Key Takeaways
- Cap rate = NOI ÷ value or price. It expresses a property's income yield as a percentage, independent of how the purchase was financed.
- Lower cap rate, higher price per dollar of NOI. Typically associated with lower-risk, higher-quality properties or markets, though this varies by situation.
- Higher cap rate, lower price per dollar of NOI. Typically associated with higher perceived risk or less desirable markets, again not a universal rule.
- Cap rate excludes financing. It is not a leveraged return figure and does not account for debt service, capital expenditures, or price appreciation.
- Most useful within like-for-like comparisons. Comparing cap rates across similar property types and markets is more meaningful than comparing across very different situations.
- Widely referenced in REIT disclosures and transactions. Cap rates appear in REIT earnings materials, appraisal reports, and property transaction summaries as a shorthand for relative pricing.
How Is Cap Rate Calculated?
Cap rate is calculated as:
Cap Rate = Net Operating Income (NOI) ÷ Current Market Value or Purchase Price, expressed as a percentage.
Net operating income is a property's income after operating expenses, items like property management, maintenance, insurance, and property taxes, but before financing costs (interest and principal payments), capital expenditures, and income taxes. Because NOI sits above the financing line, cap rate reflects the property's earning power independent of how any particular buyer chooses to finance the purchase. Two buyers paying the same price for the same property arrive at the same cap rate whether one pays all cash and the other uses substantial leverage.
The same formula can be rearranged depending on which two of the three variables, NOI, value, and cap rate, are known. If a market's typical cap rate for a property type is known along with a property's NOI, that relationship can be used to estimate a value (value = NOI ÷ cap rate). If a property's value and cap rate are known, the formula can be used to back into an implied NOI (NOI = value × cap rate). This flexibility is a large part of why cap rate is used both to price transactions and to sanity-check reported valuations.
Because cap rate is a ratio of a single year's income to price. It is a snapshot, not a forecast. It does not directly capture expected future changes in rents, occupancy, expenses, or property value, those expectations are reflected indirectly, through the price buyers and sellers agree to pay relative to current NOI.
What a Lower or Higher Cap Rate Implies
A lower cap rate means a buyer is paying more for each dollar of current net operating income. This is commonly associated with lower-risk, higher-quality properties or markets, for example, a well-leased property in a market with strong, stable demand, where buyers are willing to accept a smaller current income return in exchange for perceived stability, lower vacancy risk, or stronger long-term appreciation prospects.
A higher cap rate means a buyer is paying less for each dollar of current net operating income. This is commonly associated with higher perceived risk or less desirable markets, properties with more uncertain lease renewals, higher vacancy risk, deferred maintenance needs, or markets with weaker demand fundamentals, where buyers demand a larger current income return to compensate for that added risk.
These associations describe general tendencies observed across many transactions, not a fixed or universal rule. Cap rates also move with broader financing conditions (interest rates and credit availability), local supply and demand for a given property type, and property-specific factors such as lease term, tenant credit quality, and physical condition. A single cap rate figure, viewed in isolation, does not fully explain why a property is priced the way it is.
Worked Example
Hypothetical example, for education only.
- Property A: Net operating income of $500,000 and a purchase price of $10,000,000. Cap rate = $500,000 ÷ $10,000,000 = 5.0%.
- Property B: Net operating income of $500,000 and a purchase price of $7,142,857. Cap rate = $500,000 ÷ $7,142,857 ≈ 7.0%.
- Reading the comparison: Both properties generate the same NOI, but Property A trades at a lower cap rate (5.0%) because the buyer paid more per dollar of NOI, while Property B trades at a higher cap rate (7.0%) because the buyer paid less per dollar of NOI. All else being comparable, this pattern is typically consistent with Property A being viewed as lower-risk or higher-quality than Property B, though a full assessment would also weigh lease terms, tenant quality, location, and market conditions rather than the cap rate alone.
- Rearranging the formula: If a comparable property in Property A's market is known to trade around a 5.0% cap rate and a third property has NOI of $600,000, an estimated value can be derived as $600,000 ÷ 0.05 = $12,000,000, illustrating how cap rate is used to estimate value, not just to describe a completed transaction.
Property A from the example above, rebuilt from income and expenses. Lower the price toward $7,142,857 to land on Property B. Educational only, not a valuation.
Calculate Cap Rate From NOI and Value
Unlevered yield on value
- Cap rate
- 5.00%
- Net operating income
- $500,000
- Operating expense ratio
- 41.18%
Cap rate = NOI / property value. It is an unlevered figure: financing changes what an owner earns, not the cap rate. A cap rate computed on an asking price says what the seller wants, not what the asset is worth. Educational only, not a valuation or investment advice.
Full tool, which adds financing, debt service and cash-on-cash return: Real Estate Cap Rate and Cash-on-Cash Calculator.
Limitations and Common Mistakes
Treating cap rate as a total return
Cap rate reflects only the current-period income yield relative to price, assuming an all-cash purchase. It excludes financing costs, capital expenditures, and any change in property value. An investor's actual return, especially when leverage or significant capital improvements are involved, can differ substantially from the cap rate.
Comparing cap rates across dissimilar property types or markets
Cap rates are most meaningful within the same property type and comparable markets, since risk profiles, lease structures, and growth expectations vary, for example between office, industrial, retail, and residential real estate. Comparing a cap rate on one property type directly to another without adjusting for those differences can produce misleading conclusions about relative value.
Using stale or unverified NOI figures
Because cap rate is only as reliable as the NOI figure used to calculate it, relying on outdated, non-standardized, or unverified NOI (for example, figures that inconsistently include or exclude certain expenses) can distort the resulting cap rate and any value estimate derived from it.
Ignoring the broader financing and rate environment
Cap rates across a market can shift when financing conditions change, independent of any change in a specific property's income or quality. Comparing a cap rate observed today to one from a period with materially different financing conditions, without accounting for that shift, can lead to an inaccurate read on whether a property is priced attractively.
FAQ
What is a cap rate in real estate?
A cap rate, short for capitalization rate, is a property's net operating income (NOI) divided by its current market value or purchase price, expressed as a percentage. It is used to estimate property values and compare relative pricing across real estate transactions. A cap rate is not a total-return figure, it excludes financing costs, capital expenditures, and any change in property value.
What does a lower cap rate mean?
A lower cap rate implies a higher price paid per dollar of net operating income. This is typically associated with lower-risk, higher-quality properties or markets, where buyers accept a smaller current income return in exchange for perceived stability or stronger appreciation prospects. The relationship is common but not universal, cap rates also reflect financing conditions, local supply and demand, and property-specific factors.
What does a higher cap rate mean?
A higher cap rate implies a lower price paid per dollar of net operating income. This is typically associated with higher perceived risk or less desirable markets, where buyers demand a larger current income return to compensate for that risk. As with lower cap rates, this association is a general tendency, not a fixed rule, and varies by property type and market conditions.
How is cap rate calculated?
Cap rate equals net operating income divided by current market value or purchase price, expressed as a percentage. NOI is a property's income after operating expenses but before financing costs, capital expenditures, and taxes. The same formula can be rearranged to estimate value from NOI, or to back into NOI from a known value and cap rate, depending on which inputs are known.
Is cap rate the same as return on investment?
No. Cap rate measures a property's income yield relative to its value assuming an all-cash purchase, and it excludes debt service, capital expenditures, and any appreciation or depreciation in property value. An investor's actual total return can differ substantially from the cap rate once financing, leverage, and price changes are factored in.
Can cap rates be compared across different property types?
Cap rates are most meaningful when compared within the same property type and similar markets, since risk, growth expectations, and lease structures vary by sector, for example between office, industrial, retail, and residential real estate. Comparing cap rates across very different property types or markets without adjusting for those differences can produce misleading conclusions about relative value.
What is the difference between a going-in cap rate and an exit cap rate?
A going-in cap rate uses the first year of expected net operating income divided by the purchase price, describing the yield at acquisition. An exit cap rate is the rate assumed when modeling a future sale, applied to the net operating income projected for that later year to estimate a resale value. Underwriting often assumes an exit cap rate slightly above the going-in rate to reflect an older building and an unknown future market. The exit assumption is an estimate, and small changes to it move a projected return materially.
What does the spread between cap rates and government bond yields indicate?
Analysts often compare a property cap rate with a long-dated government bond yield to gauge how much extra yield real estate is offering over a lower-risk alternative. A wider spread suggests buyers are demanding more compensation for illiquidity, vacancy risk, and operating risk. A narrow spread suggests the opposite. The comparison is a framing device rather than a valuation rule, because cap rates reflect local supply and demand, lease structures, and financing availability that a bond yield says nothing about.
Can a cap rate be calculated for a whole REIT rather than one property?
Yes, and the result is usually called an implied cap rate. It divides a REIT portfolio net operating income by its total enterprise value, meaning equity market capitalization plus debt and preferred stock, less cash. Comparing that implied cap rate with the cap rates seen in private property transactions is one way analysts discuss whether the public market is valuing a portfolio above or below private-market pricing. The calculation depends on which income figure and which capital items are included, so methodology matters.
References
Disclaimer
This article is for educational and informational purposes only and does not constitute personalized investment, financial, or legal advice. Cap rates and their typical ranges change as market conditions, financing costs, and property fundamentals evolve. Always verify current data from primary sources before making a decision. Trading and real estate investing involve risk, including the possible loss of principal.