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Cap Rate Calculator

Calculate capitalization rate from NOI and property value with market comparison, band of investment, and valuation analysis.

Tested tool guide Tested browser tools Checked August 16, 2026

What Cap Rate Calculator does, with a checked example

Cap rate places a property's annual net operating income against its purchase price or current value, producing an unlevered income yield for a single period. This calculator handles the direct rate, the inverse value calculation, comparison with market rates, and a band of investment view based on debt and equity requirements. The common mistake is entering cash flow after mortgage payments as NOI. Debt service is financing, not a property operating expense, so including it understates NOI and the cap rate.

Worked example

A concrete input and expected output from the current implementation.

Input

Annual NOI: 60000; Property value: 800000

Expected output

Capitalization rate: 7.5%

60000 divided by 800000 equals 0.075. Expressed as a percentage, that is 7.5%; conversely, 60000 divided by 0.075 returns an indicated value of 800000.

How the result is produced

1

Direct capitalization

The direct calculation uses cap rate = annual NOI / property value. Multiplying the decimal by 100 expresses it as a percentage. Valuation runs the same relationship backward: indicated value = annual NOI / cap rate expressed as a decimal. Keep NOI and value in the same currency, and annualize income before applying either formula.

2

Band of investment

In a band of investment analysis, the overall rate is the loan-to-value share multiplied by the mortgage constant, plus the equity share multiplied by the equity dividend rate. The debt and equity shares must total 100 percent. Market comparison gives the result context, but comparable rates need consistent income definitions and genuinely similar assets.

Good uses

  • Screening the asking price for a stabilized apartment building after assembling its annual NOI.
  • Estimating an indicated property value from forecast NOI and a cap rate supported by comparable sales.
  • Reconciling a target acquisition rate from proposed debt and equity capitalization requirements.

Limits and checks

  • Cap rate is not cash-on-cash return or IRR because it excludes financing and does not model a holding period.
  • Trailing, current, and projected NOI can produce different rates; label the income period and apply one expense convention consistently.
  • A market comparison can mislead when properties differ materially in location, condition, tenancy, lease structure, or expected capital work.

Common questions

Does a higher cap rate always mean a better investment?

No. A higher cap rate means more current NOI per dollar of stated value, but it can also signal higher perceived risk, weaker growth expectations, property problems, or a less liquid market. It does not measure financing effects or total return. Compare properties only after aligning the NOI period and expense treatment.

Should mortgage principal and interest be included in NOI?

No. Principal and interest are debt service, so they sit below NOI rather than among property operating expenses. The direct cap rate therefore remains independent of a particular loan. Use the band of investment analysis when debt and equity requirements should affect the capitalization rate; use a cash-on-cash calculation when evaluating levered cash return.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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