Cap Rate Definition

Cap Rate Definition

A "cap rate" is the ratio of a property’s income over its cost or value. It’s a number that helps investors convert a property’s income into value.

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Cap Rate Calculator

Capitalization Rate – or “Cap Rate” for short – is a term that needlessly intimidates new real estate investors.

Don’t be daunted! It’s a very simple concept, and you can master it in just a few minutes.

Here’s what new investors need to know about cap rates, how to calculate them, and even a couple of handy calculators to run the numbers yourself (you can see an ultra-simplified version below and a more advanced version of this calculator further down this page).

What is a Cap Rate?

A cap rate is simply a ratio of a property’s income over its cost or value. It’s a number that helps investors convert a property’s income into value.

It’s one way (but not the only way) of measuring the rate of return for an income-producing property.

The cap rate is the answer to a fundamental question:

“For every dollar this property cost to acquire, how much can you expect to receive back each year in net rental income?”

Another way to think about cap rates is annual yield, similar to the dividend yields for stocks.

How Are Cap Rates Calculated?

The math behind cap rates is simple enough:

NOI Market Value Cap Rate

Again, it’s just a ratio of income over cost. But both components in the equation need some further explanation.

Likewise, when you know what the cap rate is in a given market, you can also use this number to calculate the value of a property by dividing the correct cap rate by your NOI.

Market Value Cap Rate Calculation

Net Operating Income (NOI)

Net operating income (NOI) is the total annual income a property produces after vacancy and expenses. In other words, gross rent minus expenses.

Annual Gross Rent

To do this, we start by considering what the subject property could generate in a perfect world if it was 100% occupied all the time.

Then we would subtract the anticipated vacancy rate.

For example, if a property could generate a maximum of $10,000 per year, but we expect it to have a vacancy rate of 10%, then the most it can actually generate each year is $9,000.

$10,000 rent – 10% vacancy rate ($1,000) = $9,000 annual gross rent

Another way to run the same calculation would be:

$10,000 – (10,000 x 0.10) = $9,000


$10,000 x 0.90 = $9,000

You get the idea.

Annual Expenses

The next step is to subtract the annual expenses. This includes all the anticipated things that will drain your bank account each year.

For example:

  • Property taxes
  • Insurance
  • Utilities
  • Maintenance and Repairs
  • Property Management
  • HOA Dues
  • Miscellaneous (lawn maintenance, snow removal, cleaning fees, trash, etc)

One expense that’s NOT included when calculating the cap rate is financing costs, such as mortgage principal and interest payments.

Cap rates do not include loans or leverage. They analyze the raw income over the raw cost of a property.

Market Value or Cost

A property’s cap rate can be calculated based on either the current market value of a property or the cost you can acquire it for – and these two things aren’t always the same number.

A property may be worth $600,000, but if you know you can acquire it, cover all closing costs and pay for any immediate repairs for $500,000, then THAT becomes the more relevant number to use.

Ultimately, the most useful way to calculate cap rates is by starting with:

  • the price you expect to pay for a property, PLUS
  • any additional costs required to close, PLUS
  • any improvements needed to make the property functional.


Suppose you’re able to buy a small apartment building all-in for $500,000.

You then set about calculating the net operating income for a year:

Annual Gross Rent: $80,000 – 5% vacancy rate (or $4,000) = $76,000

Annual Expenses:

  • Property taxes: $5,000
  • Insurance: $3,000
  • Repairs: 8% or $6,400
  • Maintenance: 5% or $4,000
  • Property management costs: 10% or $8,000
  • Total Annual Expenses: $26,400

Net Operating Income: $49,600

Therefore, the cap rate would be: $49,600 / $500,000 = 9.92%

Try running it through this calculator to see if you get the same thing!

Why Do Cap Rates Matter?

Cap rates are useful as a quick way to estimate returns on any particular property.

Oftentimes, real estate investors and real estate brokers will quickly reference this particular number (rather than the cash on cash return, the return on investment, the internet rate or return or any other number of ratios). Why do they focus on the Cap Rate?

Because this number is not affected by the financing terms of the property.

Whether an investor buys the property for cash, whether they put 10% down, or whether they put 25% down – the Cap Rate will stay the same.

Cap rates are also a great tool to help you compare two different properties using an objective measure.

Imagine you have a choice between buying two identical properties, across the street from each other. If one offers a cap rate of 7%, and the other 9%, then all else being equal, it would make more sense to buy the property offering the higher cap rate.

Of course, all else is never equal in the real world.

One property may be occupied with less reliable tenants, most of whom will need to be replaced with better quality renters or the other property may need significant repairs soon, or may feature a more desirable location, or may come with more land.

While a cap rate by itself never tells the whole story, you can think of this number as a quick way to compare property returns.

While a cap rate by itself never tells the whole story, you can think of this number as a quick way to compare property returns.Click To Tweet

Just remember that cap rates are the beginning of your due diligence, not the end.

Shortcomings of Cap Rates

The simplicity of a cap rate proves both an advantage and a limitation.

By removing interest and financing-related costs from the equation, investors can use cap rates to compare the “raw” income returns between two properties, but don’t assume that cap rates tell the whole story.

One piece of the puzzle that cap rates ignore is the difficulty that may arise in property management and rent collection. Two properties might have the exact same cap rate, yet one could be in an upscale neighborhood, populated by reliable residents with high credit scores, and the other could be in a slum, where late rents and defaults are the norm rather than the exception.

Along with higher default rates, low-end rental properties also tend to suffer from greater wear and tear. Crime could prove a problem as well – another reality of some rental properties that cap rates fail to capture.

Then there are the financing terms. Interest and closing costs do matter, as does the amount of the down payment. Which is why many investors use cash-on-cash return in addition to cap rates.

Cap Rate vs Cash on Cash Return

Unlike cap rates, the cash-on-cash return is a ratio of the actual net profit received over the actual acquisition costs – taking the full financing picture into account.

When a property is acquired with financing (as most are), the annual net income will also account for all loan payments. Furthermore, the cash-on-cash return will reflect the buyer’s personal out-of-pocket expenses. This includes the buyer’s down payment, closing costs and any other costs the investor incurred while getting the property in rent-ready condition.

Cash-on-cash returns reflect your personal return on investment only from your own cash, rather than the property’s theoretical return.

Example: How Financing Costs Impact Cash-on-Cash Returns

Let’s say you find two properties available at an identical price of $500,000 and the same cap rate of 9.92%.

Yet, when you discuss the two properties with your lender, they offer to lend 75% of the purchase price of Property A, and 80% of the price of Property B (both with a term of 30 years and an interest rate of 7%).

That means your up-front cash investment is $125,000 for Property A, and $100,000 for Property B.

  • Property A would require a $2,494.88 monthly payment
  • Property B would require a $2,661.21 monthly payment.

After you subtract out the ongoing mortgage payments for each property…

  • Property A would have an annual net income of $19,661
  • Property B would have an annual net income of $17,665

Here’s how the two cash-on-cash returns compare:

  • Property A: $19,661 / $125,000 = 15.73%
  • Property B: $17,665 / $100,000 = 17.67%

Both properties have a cap rate of 9.92%

Yes, the mortgage payment is higher for Property B, but because you wouldn’t have to inject as much cash up front, but your cash-on-cash return would be higher.

If we look at cash-on-cash return as a measure of how hard your cash is working for youyour money would be working harder with Property B.

If you want to take a more in-depth look at an investment scenario – in a way that will account for financing terms, and will also show you the cap rate AND the cash-on-cash return for an investment property, this advanced version of the Cap Rate calculator will allow you to input a lot more details, and will also should you much more detailed results.

How to Improve Cap Rates

Are cap rates written in stone?

Is there anything you can do as an investor to improve a property’s cap rate?

First, and most obviously, paying less for a property will improve its cap rate.

RELATED: 10 Real Estate Negotiation Tactics to Score the Best Price on Properties

But paying less for a property isn’t the only way to improve its cap rate. Another option is to raise the property’s annual net income.

This can be done in many ways. An obvious approach is to raise rents (if current rents are below market rates).

Another way is to make improvements to the property, so it can justify a higher rent price.

But keep in mind – investors can also raise their net income by reducing expenses.

For example, an investor could use preventative maintenance to reduce repair costs. They could find ways to make their units more energy-efficient and/or reduce their utility costs if they include utilities with the rent.

Example: How to Improve Cap Rates

To continue the example above, say you have your heart set on a cap rate of 12% and the property’s numbers are coming in at 9.92%.

You could reach 12% by negotiating the seller down to a purchase price of $413,333 ($49,600 / $413,333 = 12%).

Suppose the seller will go as low as $450,000, but not all the way to $413,333. In that case, you could turn to raising the gross rent as well.

To reach a 12% cap rate, you need an NOI of $54,000, rather than the $49,600 the property earns currently ($54,000 / $450,000 = 12%). This means you need to find another $4,400 in income each year.

You could approach your property manager with an offer:

“I have a new property I’m planning to hire you to manage, but only if you can reduce your fees.”

They agree to drop their total fees to equal 8% of revenues – an annual savings of $1,600.

With thorough market analysis, you discover that there’s room to raise rents and add another $2,800 a year in net revenue.

Congratulations! You now have your 12% cap rate.

What is Considered a “Normal” Cap Rate?

A “normal” cap rate can vary widely, depending on the property type, the real estate market, the investor’s negotiating power, and a lot of other factors.

Most real estate investors would consider a 12% cap rate to be on the higher side of normal.

Generally speaking, the better the neighborhood, the lower the cap rate, because the headaches and hidden costs of property management are also lower.

In lower-end neighborhoods, you can often find high cap rates on paper, but be prepared to work harder for every cent of rent you collect.

As a sweeping generalization, a normal cap rate could be as low as 4% in the best areas, and up to 10% or higher in lower-end districts of town.

Here’s how cap rates have looked in the US over the last five years:

What Is a "Good" Cap Rate?

Many new investors may wonder how to determine when a cap rate is “good” or acceptable for their investment.

While it’s an understandable question, a more appropriate question is safe enough, given the inherent risks and potential rewards of a deal. The standard for cap rates also depends largely on the current conditions of the market and the property type.

In very broad terms, a good cap rate is around 5%. Rasti Nikolic, a financial consultant at Loan Advisor, seems to agree.

“In general though, 5% to 10% rate is considered ‘good…if an investor wants to cover the cost of purchase rather quickly s/he would buy a property which has a higher cap rate”.

That said, it is important to distinguish between “good” and “safe” cap rates because the cap rate formula is itself derived from comparing net operating income to the initial purchase price.

Unfortunately, cap rates have become (almost) synonymous with risk assessment. In other words, lower cap rates indicate lower risk and lower return, whereas higher cap rates suggest higher risk and higher return. Therefore, determining a “safe” cap rate also means setting a ceiling for how much risk you’re willing to accept.

In any case, it’s important to remember never to take on more risk than you can realistically absorb. Additionally, don’t just rely on cap rate to determine an investment’s risk vs. reward profile; use other calculations like Return on Investment (ROI), Cash on Cash Return, and Internal Rate of Return (IRR) to verify your assessment and see a more comprehensive picture of the deal.


Cap rates are a useful shorthand calculation. You can do them on the back of a napkin in 30 seconds, assuming you have accurate numbers at your disposal.

The simplicity of the cap rate makes it an easy metric to use, especially as a yardstick to quickly compare returns between two properties. However, it’s simplicity also means its usefulness is limited and doesn’t tell the full story about a property’s returns.

Don’t confuse cap rates for actual returns. The two are related, but not identical. Use cap rates as one metric among several to get a sense for a property’s returns, and always run cash-on-cash returns in addition to cap rates before making an investment decision.

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