A cap rate calculator measures how much income a rental property produces compared to its price. Investors use the capitalization rate, or cap rate, to compare properties quickly, regardless of how they’re financed. Enter the property’s net operating income and its purchase price or market value, and it returns the cap rate as a percentage.
The formula is: cap rate = net operating income (NOI) ÷ property value × 100. NOI is the yearly rental income minus operating expenses like property taxes, insurance, maintenance, management and vacancy, but not mortgage payments. For example, a duplex that brings in $36,000 a year in rent with $12,000 in operating expenses has an NOI of $24,000. If it costs $400,000, the cap rate is 6 percent.
What’s a good cap rate? It depends on the market and the property type. Lower cap rates are common in expensive, high-demand cities, where buyers expect property values to rise. Higher cap rates often appear in smaller markets or riskier properties. Comparing a property’s cap rate to similar properties nearby tells you more than any single “good” number.
Common mistakes: including mortgage payments in expenses (cap rate ignores financing), using optimistic rent numbers, and forgetting vacancy and repairs. Always use realistic, documented figures. Cap rate is also just one metric; cash-on-cash return and total return matter too. This calculator is for education and isn’t financial advice.
How to use the Cap Rate Calculator on Minedit: enter your values in the fields, press calculate, and review the step-by-step breakdown under the result. If something looks off, change one input at a time to see how it affects the answer, which is also a great way to learn the math behind it.
Why use an online Cap Rate Calculator: it saves time, avoids simple arithmetic mistakes and shows each step, so you can check your homework, plan a project or make a decision with confidence. Bookmark the page so it’s ready the next time you need it.
Learn more on Wikipedia’s capitalization rate article. For more money tools, like mortgage recast, debt-to-income and buy-vs-rent calculators, visit Minedit.