Cap Rate Calculator
Capitalization rate from net operating income and property value.
Capitalization rate
6%
$24,000.00 NOI
NOI
$24,000.00
Price
$400,000.00
AI Breakdown & Smart Takeaway
Plain-English insight on your numbers
Get a personalized explanation of what these results mean — and how to improve them.
How the Cap Rate Calculator works
The Cap Rate Calculator instantly computes the capitalization rate of any income-producing property by dividing its net operating income (NOI) by its current market value or purchase price. It is designed for real estate investors, property analysts, and buyers who need a fast, reliable snapshot of a property's income-generating potential relative to its cost.
The capitalization rate is the single most widely used metric in commercial and residential real estate investment analysis. To use this calculator, you input two values: the property's annual Net Operating Income (NOI) and its current market value or purchase price. The calculator then divides NOI by property value and expresses the result as a percentage. A result of 6%, for example, means the property generates six cents of net income for every dollar of its value — essentially the unleveraged yield you earn before financing costs enter the picture.
Net Operating Income is the engine behind the entire calculation, so getting it right is critical. NOI is calculated by taking all gross rental income (including parking, laundry, and other ancillary revenue), then subtracting all operating expenses such as property taxes, insurance, maintenance, property management fees, and vacancy allowances. Critically, NOI does NOT include mortgage payments, depreciation, or income taxes — it is a pre-financing figure. If you overstate income or forget to include a major expense like CapEx reserves, your cap rate will be artificially high, leading to a poor investment decision.
Cap rates vary significantly by geography, property type, and market cycle, which is why context matters as much as the number itself. In dense urban markets like New York or San Francisco, cap rates on multifamily properties can sit between 3–4% because appreciation expectations are high and competition is intense, compressing yields. In secondary or tertiary markets, the same asset class might trade at 6–9%, reflecting higher risk and lower liquidity. Property type also matters: net-leased retail with a corporate-guaranteed tenant might trade at a 5% cap, while a self-storage facility or value-add apartment building might need to offer 7–8% to attract buyers. Always benchmark the cap rate you calculate against comparable recent sales (comps) in the same submarket and asset class.
One of the most common mistakes investors make is using the cap rate in isolation to make a buy or pass decision. The cap rate ignores your financing structure — two investors can buy the same property at the same cap rate but achieve radically different cash-on-cash returns depending on their loan terms. It also ignores future rent growth, planned renovations, or market appreciation potential. Savvy investors use cap rate as a first filter to quickly compare properties and as a tool to back into valuation (Value = NOI ÷ Cap Rate), but they follow it with a full discounted cash flow analysis before committing capital. Additionally, never confuse the going-in cap rate (based on current NOI) with the stabilized cap rate (based on projected NOI at full occupancy), as conflating the two is a frequent source of analytical error.
Formula
Cap rate = NOI / Property value × 100
Pro tips
- Always verify your NOI before entering it — include a realistic vacancy allowance (typically 5–10%) and a capital expenditure reserve (often $100–$300 per unit per year for multifamily) to avoid overstating income and calculating a misleadingly high cap rate.
- Use the formula in reverse (Value = NOI ÷ Cap Rate) to back into a maximum purchase price: if you require a 6.5% return and the property's NOI is $78,000, the most you should pay is $1,200,000 — a powerful negotiation anchor.
- Compare the calculated cap rate against published market cap rate surveys (from sources like CBRE, JLL, or Marcus & Millichap) for your specific property type and metro area before drawing any conclusions about whether a deal is attractively priced.
- Never use the cap rate as a standalone decision tool — always follow it with a cash-on-cash return analysis that incorporates your specific financing terms, since leverage dramatically changes the actual return on your invested equity.
- For value-add properties, calculate both the going-in cap rate (current NOI) and the pro forma cap rate (stabilized NOI after improvements) to understand how much return depends on execution risk, and be conservative with your assumptions about rent growth and lease-up timelines.
Key terms
- Capitalization Rate (Cap Rate)
- — The ratio of a property's annual net operating income to its current market value, expressed as a percentage, representing the unleveraged rate of return on a real estate investment.
- Net Operating Income (NOI)
- — Annual gross income from a property minus all operating expenses (excluding mortgage payments, depreciation, and taxes), representing the true cash-generating power of the asset.
- Going-In Cap Rate
- — The cap rate calculated using the property's current or actual NOI at the time of purchase, as opposed to a projected or stabilized figure.
- Stabilized Cap Rate
- — The cap rate calculated using a property's projected NOI once it reaches normal occupancy and operations, often used for value-add or lease-up properties.
- Vacancy Allowance
- — A deduction from gross potential income, typically 5–10% for most asset classes, that accounts for periods when units or spaces are unrented between tenants.
- Market Cap Rate
- — The prevailing capitalization rate at which comparable properties in the same submarket and asset class are currently trading, used as a benchmark to assess whether a specific property is priced fairly.
