Rental Property ROI Calculator
Last updated July 2, 2026
Return on investment in rental real estate is more complex than a simple cash-on-cash yield because rental properties generate returns through multiple simultaneous channels: monthly cash flow after expenses and debt service, principal paydown as tenants effectively pay down the mortgage, property appreciation over the holding period, and tax benefits including depreciation deductions. Evaluating any single metric in isolation produces an incomplete picture. A property with modest monthly cash flow but strong appreciation in a high-demand market may deliver a superior total return to a high-cash-flow property in a stagnant market. Most experienced real estate investors target 8 to 12 percent cash-on-cash return as a threshold for deal acceptance, while expecting total annualized returns — including appreciation and equity buildup — in the 12 to 20 percent range over a five-to-ten-year hold.
The ROI calculation for a financed rental property begins with net operating income: gross rental income minus operating expenses (property taxes, insurance, maintenance, property management, and vacancy allowance), but before debt service. Dividing NOI by the purchase price gives the cap rate — the return the property would generate if purchased in cash. To calculate cash-on-cash return, subtract annual mortgage payments from NOI and divide by the total cash invested (down payment plus closing costs). On a $300,000 property purchased with $75,000 down and generating $24,000 in annual rent, $9,000 in operating expenses, and $13,200 in annual mortgage payments, the annual cash flow is $1,800 — a 2.4 percent cash-on-cash return. That number looks modest in isolation, but combined with the $5,000 to $7,000 in annual mortgage principal paydown and the property's appreciation potential, the total annualized return over five years may be substantially higher.
Evaluate rental property investments on total return — cash flow, principal paydown, appreciation, and tax benefits — not cash-on-cash return alone. Use cash-on-cash to compare specific deals and screen for minimum cash flow viability. Use total projected return to compare real estate investments against alternative uses of capital. Run both calculations before committing to any acquisition.