Investment Property Calculator
Analyze a Rental Before You Commit
A smart rental purchase is about more than just rent minus mortgage. This Investment Property Calculator helps you evaluate the numbers that actually drive performance, including acquisition costs, financing, vacancy, operating expenses, and cash invested. Instead of piecing everything together by hand, you can review monthly cash flow, annual cash flow, net operating income, cap rate, and cash-on-cash return in one place.
A Better Way to Review Rental Property Performance
For real estate investors, small assumptions can change the outcome of a deal fast. A property may look profitable until you account for maintenance, management, reserves, or closing costs. This rental property analysis tool gives you a clearer picture by standardizing income and expenses and showing how each input affects the bottom line.
Useful for Buy-and-Hold Investors
Whether you’re reviewing a single-family rental, duplex, or small multifamily deal, this Investment Property Calculator can help you compare opportunities with more confidence. You can also add optional resale assumptions to estimate future equity and potential profit at exit, making it easier to judge both immediate income and longer-term upside.
FAQs
What’s the difference between cap rate and cash-on-cash return?
Cap rate measures the property’s operating performance before financing. It uses net operating income divided by purchase price, so it’s useful for comparing properties on a similar basis. Cash-on-cash return goes a step further and looks at the actual cash you put into the deal, then compares that investment to your annual pre-tax cash flow. If you’re using financing, cash-on-cash return usually tells you more about how the deal performs for you personally.
Should I include maintenance and vacancy even if the property is in great shape?
Yes, absolutely. A rental can look strong on paper if you ignore normal ownership costs, but that often leads to unrealistic expectations. Even well-maintained properties have turnover, small repairs, and periods of lower occupancy. Including vacancy, maintenance, and reserves gives you a more durable estimate and helps you avoid buying a property that only works under perfect conditions.
How do I know if a rental property is cash-flow positive?
A property is cash-flow positive when its effective rental income is higher than its operating expenses and mortgage payment. In practical terms, that means money is left over each month after covering the major ongoing costs. This calculator shows that clearly by subtracting vacancy, operating expenses, and debt service from income. If the monthly cash flow is positive, the deal may be producing income. If it’s negative, you may need to revisit the price, rent assumptions, financing, or expense estimates.