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Cap Rate Calculator

Capitalization rate from Net Operating Income — excludes financing, by design.

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Last reviewed 2026-08-30

About the Cap Rate Calculator

Calculates capitalization rate (cap rate) — Net Operating Income divided by current property value — the standard metric real-estate investors use to compare properties independent of how each is financed.

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How to use it
  1. Enter the property's current value and gross annual rental income.
  2. Enter annual operating expenses — excluding mortgage payments and capital improvements.
  3. Read the cap rate and NOI.
Formula
NOI = annual rental income − annual operating expenses (excluding debt service and capex). Cap rate = NOI ÷ current property value × 100.
Worked example

A $350,000 property with $30,000 in annual rental income and $9,000 in annual operating expenses: NOI of $21,000, for a 6.00% cap rate.

Illustrative cap rate ranges (vary widely by market)
Illustrative cap rate ranges (vary widely by market)
RangeCommon association
3-5%Lower-risk, high-demand, high-cost metro areas
5-8%Commonly cited target range for many investors
8%+Higher-risk, secondary, or distressed markets
Interpreting your result

Cap rate is calculated before financing — NOI excludes mortgage principal/interest and capex by standard convention. This makes it ideal for comparing properties, but it's NOT your actual cash return if you have a mortgage — see Landlord ROI for that.

Recommendations
  • Never compare cap rate to your mortgage rate directly.
  • A lower cap rate isn't necessarily bad — it often reflects a lower-risk, more stable market.
  • Always confirm what's included in a seller's quoted NOI.
Frequently asked questions
It measures a property's income-generating ability independent of financing.
See the full methodology and sources for every finance calculator
Disclaimer

Illustrative estimate only, not financial or tax advice. Verify figures with a licensed adviser or your local tax authority.