Cap Rate Calculator: What Capitalization Rate Means for Investors

What Is Cap Rate?

Capitalization rate (cap rate) is the ratio of a property's Net Operating Income to its current market value. It expresses the annual return an investor would earn if they bought the property with all cash — no mortgage financing.

Cap Rate = Net Operating Income ÷ Property Value × 100

Cap rate works in two directions: - Value a property: If you know the NOI and the cap rate prevalent in the market, you can estimate what the property should sell for. - Evaluate a purchase: Given an asking price and the property's NOI, cap rate tells you what return you'd earn if you paid all cash.

Cap Rate Formula with Worked Example

Given: - 4-unit apartment building - Monthly gross rent: $5,200 ($1,300/unit × 4 units) - Annual gross rent: $62,400 - Vacancy (5%): −$3,120 - Annual operating expenses: −$18,400 (taxes, insurance, management, maintenance) - NOI: $62,400 − $3,120 − $18,400 = $40,880 - Purchase price: $550,000

Cap Rate = $40,880 ÷ $550,000 × 100 = 7.4%

This means the property returns 7.4% of the purchase price annually in net operating income — before financing costs.

What Cap Rate Doesn't Include

Cap rate is a pre-financing, pre-tax return metric. It does not include:

• Mortgage interest payments
• Loan origination costs
• Income taxes or depreciation
• Future appreciation
• Capital expenditure reserves (though some investors include CapEx in operating expenses)

For leveraged returns (with financing), use Cash-on-Cash Return or Internal Rate of Return (IRR) instead.

Cap Rate Benchmarks by Property Type and Market (2026)

Cap rates vary significantly by property type, location, and market conditions:

Lower cap rates reflect lower perceived risk (trophy assets, strong markets) and higher prices relative to income. Higher cap rates reflect higher perceived risk or lower competition for a property type.

Inverse Relationship: Cap Rate and Value

Cap rate and property value move inversely:

Property Value = NOI ÷ Cap Rate

If a property has $40,000 NOI: - At 5% cap rate: Value = $40,000 ÷ 0.05 = $800,000 - At 7% cap rate: Value = $40,000 ÷ 0.07 = $571,429 - At 9% cap rate: Value = $40,000 ÷ 0.09 = $444,444

When market cap rates rise (as they did in 2022–2023 when interest rates rose), property values fall even if NOI stays constant. This is the primary mechanism by which rising interest rates reduce commercial real estate values.

Cap Rate vs. Cash-on-Cash Return

A property with a 6% cap rate might produce a 10–14% cash-on-cash return with leverage (when the mortgage rate is below the cap rate — positive leverage). When mortgage rates exceed the cap rate, leverage is negative — financing reduces returns below what you'd earn in an all-cash purchase.

Limitations of Cap Rate

Ignores financing: Two investors buying the same property with different loan structures get the same cap rate but very different returns.

Requires reliable NOI: Cap rate is only as accurate as the income and expense data. Sellers may quote "proforma" NOI based on optimistic occupancy and revenue assumptions — always verify with actual rent rolls and expense statements.

Not comparable across risk classes: A 7% cap rate in Detroit is not equivalent to a 7% cap rate in Austin. Location, tenant quality, and asset condition determine what a cap rate actually means.

Ignores growth: Cap rate is a static snapshot. A 4.5% cap rate property in a market with 5% annual rent growth may outperform a 7% cap rate property in a declining market over a 10-year hold period.