Evaluate rental property returns. Estimate capitalization rate, net operating income (NOI), cash-on-cash return, and gross rent multiplier for commercial real estate analysis.
Total potential rent collected if fully occupied.
Laundry, parking, storage, or ancillary income streams.
Typical ranges: 5–10% for stabilized properties.
Includes taxes, insurance, management, maintenance, utilities, and reserves.
Use asking price, purchase price, or appraised value to compute cap rate.
Annual mortgage payments (principal + interest). Set to 0 for all-cash deals.
Down payment + closing costs + rehab budget for cash-on-cash calculation.
Enter annual rental income, vacancy, and operating expenses. Provide purchase price or value to compute cap rate and compare investments quickly.
Formula:
Quick answer: cap rate measures property income yield before financing. If a building earns $72,000 NOI on a $1,200,000 purchase, the cap rate is 6%. Investors use that number to compare opportunities in the same market, test whether asking price is reasonable, and decide whether expected return fits their risk profile. This calculator also adds cash-on-cash return and gross rent multiplier so you can connect unlevered valuation with real, debt-adjusted cash performance.
The core formula is:
NOI (net operating income) should include realistic vacancy and operating expenses. It should not subtract mortgage payments, depreciation, or income taxes. This distinction matters because cap rate is designed as a property-level metric, independent of personal financing choices. Two investors can buy the same property with different debt structures and still start from the same cap rate baseline.
Example scenario: gross rent is $180,000, other income is $9,000, vacancy is 8%, and operating expenses are $62,000. Effective gross income is $173,880, so NOI is $111,880. If market value is $1,750,000, cap rate is about 6.39%. Now compare that with a 6.9% mortgage rate. If debt service pushes net cash flow too low, the deal may still be acceptable for long-term appreciation, but weak for immediate cash yield.
Common underwriting mistakes include using pro forma rent that has not been proven, underestimating repairs and turnover, and ignoring local tax reassessment risk after purchase. Another mistake is comparing cap rates across unrelated asset classes or neighborhoods without adjusting for tenant quality, lease duration, and regulatory environment. Cap rate is strongest when used with true local comps and updated operating data.
Practical workflow for acquisition screening: (1) calculate stabilized NOI from trailing statements, (2) compute cap rate at asking price, (3) stress-test vacancy and expense scenarios, (4) evaluate debt impact with cash-on-cash return, and (5) compare with alternative assets such as Treasuries, REITs, and private debt. In 2025-2026, many investors also require wider spread above risk-free yields before taking operational real estate risk.
This calculator is educational, not investment advice. Before deploying capital, confirm leases, maintenance backlog, insurance exposure, legal compliance, and financing terms with licensed professionals.
Learn more about real estate investment analysis and cap rates from these authoritative sources:
Disclaimer: Cap rates are one metric among many. Always conduct thorough due diligence including property inspections, market analysis, and consult with a qualified real estate professional before investing.