Cap Rate Calculator

What is a cap rate calculator?

A cap rate calculator is a free online tool that finds the capitalization rate of an income-producing property — the annual return you would earn if you bought the property outright, with no financing. The cap rate is one of the most widely used metrics in commercial real estate because it lets you compare very different properties on a single, financing-neutral basis. This calculator works in three directions: it can solve for the cap rate, for the net operating income (NOI), or for the property value, depending on which two figures you already know.

Why the cap rate matters

The capitalization rate expresses a property’s annual net income as a percentage of its price. A higher cap rate generally signals a higher return but often greater risk, while a lower cap rate suggests a more stable, premium asset that investors are willing to pay more for. Because the cap rate ignores mortgage terms and taxes specific to one buyer, it isolates the performance of the property itself, making it the standard yardstick for comparing deals and gauging whether an asking price is reasonable.

How does the cap rate calculator work?

You choose what you want to solve for, then enter the two known values:

• Cap rate — enter the annual net operating income and the property value.
• Net operating income (NOI) — enter the cap rate and the property value.
• Property value — enter the net operating income and the cap rate.

The calculator then applies the cap rate relationship. NOI is the property’s annual income after operating expenses (such as management, maintenance, insurance, and property taxes) but before mortgage payments and income tax. To avoid an undefined result, the tool returns no answer when a divisor would be zero.

Formula

The capitalization rate is the ratio of annual net operating income to property value:

$\text{Cap Rate} = \frac{NOI}{\text{Property Value}} \times 100$

Rearranging the same relationship lets you solve for the other two quantities:

$NOI = \text{Property Value} \times \frac{\text{Cap Rate}}{100}$

$\text{Property Value} = \frac{NOI}{\text{Cap Rate} / 100}$

Where:

• $NOI$ is the annual net operating income.
• $\text{Property Value}$ is the purchase price or current market value.
• $\text{Cap Rate}$ is the capitalization rate, expressed as a percentage.

Worked examples

1. A property generates $50,000 in annual NOI and is valued at $1,000,000: $\text{Cap Rate} = \frac{50000}{1000000} \times 100 = 5\%$

2. A property valued at $1,000,000 trades at a 5% cap rate: $NOI = 1000000 \times \frac{5}{100} = 50000$

3. A property produces $60,000 in NOI and you require a 6% cap rate: $\text{Property Value} = \frac{60000}{6 / 100} = 1000000$

Notes

The cap rate measures unleveraged return, so it is most useful for comparing properties rather than predicting the cash return on a financed purchase. NOI should reflect realistic, recurring income and expenses; inflated income or omitted costs will distort the result. Because the cap rate moves inversely with price, a falling cap rate in a market usually means values are rising.

Compare related tools such as the APY calculator and the CAGR calculator to evaluate returns on other types of investments.

FAQs

What is a good cap rate?

There is no universal answer — it depends on the property type, location, and risk. Many investors consider cap rates between 4% and 10% typical, with lower rates reflecting safer, more sought-after assets and higher rates reflecting more risk or less desirable locations.

Does the cap rate include mortgage payments?

No. The cap rate is based on net operating income, which is calculated before any debt service. This is what makes it a financing-neutral measure that can be compared across buyers with different loans.

How is cap rate different from return on investment?

Cap rate measures the unleveraged annual return relative to the property’s value. Return on investment can incorporate financing, appreciation, and the actual cash you invested, so it often differs significantly from the cap rate for a financed purchase.