What Is a Cap Rate? Definition, Formula & Example Guide

Anyone who’s glanced at a commercial real estate listing has seen “cap rate” and wondered what it really says about a property. It’s a simple ratio — net operating income divided by property value — that gives investors a quick read on first-year yield.

Cap rate formula: Net operating income ÷ Property value ·
Typical commercial range: 4% to 12% ·
Higher cap rate: Higher perceived risk ·
Lower cap rate: Lower perceived risk ·
Purpose: Compare income-producing properties

Four key facts, one pattern: the cap rate strips away financing and long-term speculation to give a pure income yield. Everything else — leverage, appreciation, tax effects — comes later.

The pattern: cap rate condenses property income into a single percentage, making it a powerful screening tool when used correctly.

What is a cap rate?

Definition and formula

• Cap rate, short for capitalization rate, is the net operating income (NOI) divided by the current property value (JPMorganChase).
• It is expressed as a percentage and represents the first-year yield on an all-cash purchase (Yardi (property management software provider)).
• The formula is static: it ignores financing, appreciation, and taxes (Wall Street Prep).

Why cap rates matter

• Cap rates enable apples-to-apples comparisons across different properties regardless of price (LightBox).
• A higher cap rate signals higher risk but also higher potential return; a lower cap rate suggests stability and lower risk (LoopNet).
• Investors use cap rates to decide which properties merit further due diligence.

The catch: a cap rate is a static number, not a total return forecast. Buyers who treat it as the sole decision metric miss the financing and appreciation picture.

How do you calculate cap rate?

Step-by-step calculation

1. Step 1: Determine Net Operating Income (NOI) — gross rental income minus operating expenses (property management, taxes, insurance, maintenance). Do not include mortgage payments (Azibo (rental property management platform)).
2. Step 2: Obtain the current market value or purchase price of the property.
3. Step 3: Divide NOI by property value. Formula: Cap rate = NOI ÷ property value (Commercial Real Estate Loans (CRE lender)).
4. Step 4: Express the result as a percentage.

Example with numbers

• Assume a property generates $100,000 in NOI per year and costs $1,250,000.
• Cap rate = $100,000 ÷ $1,250,000 = 0.08 = 8% (Origin Investments).
• The 8% means the property yields an 8% return on the purchase price in the first year, assuming no debt.

What this means: any change in NOI — from vacancy, rent fluctuations, or rising expenses — directly alters the cap rate. The ratio is only as reliable as the NOI input.

What is a good cap rate?

Factors that define “good”

• There is no universal “good” cap rate. It depends on location, property type, and the investor’s risk tolerance (Wise (financial services company)).
• In stable, high-demand markets (e.g., prime Manhattan or San Francisco office), cap rates may range from 4% to 6%. In riskier secondary markets, 8% to 12% is common (LoopNet).
• Property type also matters: multifamily tends to have lower cap rates than retail or hotels (LightBox).

Cap rate ranges by property type

• Multifamily: 4% – 8% (lower risk, stable cash flow)
• Office: 6% – 10% (varies by location and lease length)
• Retail: 7% – 11% (tenant viability influences risk)
• Industrial: 5% – 9% (often lower due to long leases)
• Hospitality: 8% – 14% (higher volatility, higher yield)

The pattern: cap rates compress when capital floods into real estate (low rates, hot markets) and expand when credit tightens or risk rises. A 7% cap today may look different next year.

What does a 7% cap rate mean?

Interpretation of common cap rates

• A 7% cap rate implies the property generates a 7% annual return on the purchase price before financing (Origin Investments).
• It reflects moderate risk: not as safe as a 4% cap rate in a core market, but not as speculative as a 12% cap rate in a turnaround asset.
• Investors often compare a property’s cap rate to the prevailing market average. If the market average is 6% and this property offers 7%, it may be slightly undervalued or riskier.

3% vs. 7% vs. 10%

• 3% cap rate: Very low risk, very high property value. Typical of prime assets in gateway cities — think trophy office or luxury multifamily in New York or London.
• 7% cap rate: Moderate risk, common for solid commercial properties in secondary markets or with slightly longer vacancy risks.
• 10% cap rate: High risk — often distressed assets, older buildings, or markets with declining demand.

The implication: a 7% cap rate is a middle-ground signal. It says the property is priced for a reasonable yield but carries enough risk that the buyer should inspect the NOI assumptions carefully.

What is a cap rate for dummies?

Simple explanation

• A cap rate is like a price tag for the income a property produces. It tells you what percentage of the purchase price comes back as profit each year (before debt).
• Think of it this way: if a property costs $1 million and produces $80,000 in NOI, the cap rate is 8% — that’s $8 of return for every $100 invested.
• It does not tell you if the price will go up, but it gives a quick read on the quality of the income stream.

Everyday analogy

• Imagine two savings accounts: Account A pays 3% interest, Account B pays 7%. Account B pays more, but is it riskier? The cap rate works the same way for properties.
• A higher cap rate compensates you for more uncertainty — older building, weaker tenant, fluctuating rental market.
• Lower cap rates mean you’re paying for stability — think a triple-net lease to a national retailer.

“Cap rate is the rate of return on a real estate investment based on expected income.”

— Investopedia (tier-2 educational publisher)

“Cap rate equals net operating income divided by asset value.”

— JPMorganChase (tier-1 financial institution)

Confirmed facts vs. what’s still unclear

What we know

• The cap rate formula is NOI divided by property value (Hopewell Township (municipal document)).
• Cap rate does not include mortgage financing (Wall Street Prep).
• Higher cap rates correlate with higher perceived risk (LightBox).
• The cap rate is a static one-year measure, not a total return forecast (JPMorganChase).

What’s still uncertain

• Whether a specific cap rate (e.g., 4.5%) is “good” depends entirely on market context and property type (Wise).
• How cap rates will evolve with interest rate cycles — the ratio itself doesn’t predict that.
• Whether a property’s true NOI is accurate — expenses or vacancy can be understated.

The catch: because confidence in cap rate analysis is only as high as the NOI data quality, investors should never rely on a single ratio. Use cap rates to shortlist, then verify the income assumptions.

For a US commercial real estate investor, the implication is clear: cap rates are a starting point, not the finish line. Pair them with cash-on-cash return, IRR, and market comps to make informed decisions. Skip that step, and a 7% cap rate can quickly become a 4% realized return when vacancy hits.

For a deeper look at how cap rates are calculated and what they mean for investors, see this cap rate definition and formula guide.

Frequently asked questions