Cap rate calculator

Enter a property's price, rent and expenses to see its cap rate and net operating income. Results update as you type.

Showing an example: a South Orange County duplex. Replace it with your own numbers.

1Property

$

2Income

$
Total rent across all units
$
Parking, storage, laundry
%
5% is a common estimate

3Operating expenses

$
$
%
Percent of collected rent
$
$
Only what the owner pays
$
$
Landscaping, pest control, reserves
$
Leave out mortgage payments, depreciation and capital improvements

4Cost of money (optional)

%
Your loan rate, or the return you could earn elsewhere
How cap rate works

Cap rate = net operating income ÷ property value

Net operating income (NOI) is what the property earns in a year after vacancy and operating expenses, but before mortgage payments and income taxes. Cap rate is the return you would earn if you bought it with cash.

A lower cap rate means a higher price for each dollar of income. That's common in high demand coastal markets, where buyers also count on appreciation. A higher cap rate means more income per dollar invested, and sometimes more risk.

Compare the cap rate with your cost of money. If it's higher, borrowing increases your return (positive leverage). If it's lower, borrowing reduces it.

For educational purposes only. These are estimates, not financial, tax or investment advice. Confirm all figures with your agent, lender and tax professional.