Rental Property Cash Flow Calculator
Check the operating arithmetic of a rental property before relying on its headline rent. Separate operating income, financing and capital reserves, and see how those choices affect first-year cash flow and returns.
Your result
How the calculation works
NOI = collected rent + other income − operating expenses. Cash flow = NOI − debt service − capital reserves. Cap rate = NOI / purchase price. Cash-on-cash return = cash flow / (down payment + initial costs).
Worked example
An all-cash $200,000 purchase with $20,000 annual collected income, $5,000 operating costs and $1,000 capital reserve has $15,000 NOI, a 7.5% cap rate and $14,000 annual cash flow. With $5,000 initial costs, cash-on-cash is about 6.83%.
Assumptions and limitations
Management applies to collected rent, while vacancy reduces scheduled rent. NOI excludes financing and reserves. Cash investment excludes financed principal. All rates and costs are entered, held constant and illustrated before income tax.
A high cap rate does not establish a good investment. Consider repairs, tenancy rules, insurance, concentration risk, financing terms and vacancy uncertainty independently. No appreciation or sale proceeds are included.
Sources and editorial responsibility
Maintained by Renvoro Pty Ltd. Sources inform the methods and assumptions shown here; outputs have the limitations described on this page.
Method reviewed 2026-10-11. Calculation standards · Report an issue