PropertyIQ
Calculator 04 — Investment

Rental ROI & Cap Rate Calculator

Enter a property's numbers to see net operating income, cap rate, monthly cash flow, and cash-on-cash return — the four figures investors compare across deals.

Property & Financing
$
$
$
%
$

Operating Expenses monthly

% of rent
% of rent
$
$
$
$
Investment Returns
Monthly cash flow
$0
after mortgage & all operating expenses
  • Net operating income (annual)$0
  • Cap rate0%
  • Cash invested (down + closing)$0
  • Cash-on-cash return0%
  • Monthly mortgage (P&I)$0
  • Total monthly expenses$0
Adjust the fields to see your return metrics.

Reading these numbers together

Cap rate (net operating income ÷ purchase price) ignores financing and tells you the unleveraged yield of the property itself — useful for comparing deals in the same market.

Cash-on-cash return (annual cash flow ÷ cash invested) accounts for your actual financing and tells you the yield on the money you personally put in — usually the more relevant number if you're using a mortgage.

Read more on the difference in our guide: What Cap Rate Really Tells You. For the mortgage math behind the P&I figure, see the mortgage calculator.