Enter the purchase, financing, rent and expenses for a rental property. You get the monthly cash flow after every cost and the key investor metrics, so you can compare deals on the same basis.
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Runs entirely in your browser. Nothing is uploaded to any server.
Catch deals that cost you money every month.
Cap rate and cash-on-cash put deals side by side.
Know your DSCR before you apply.
Cash flow is what is left each month after all costs. But a rental also builds wealth through principal paydown, as tenants effectively repay the mortgage, and through appreciation. The first-year return adds all three.
Underestimating expenses is the most common mistake. Budget for vacancy, repairs and big-ticket replacements such as roofs and heating systems, even if the property is in good shape today.
NOI / price, unlevered yield.
Cash flow / cash invested.
NOI / debt payments.
Cash flow = rent + other income - vacancy - operating expenses - mortgage payment. Operating expenses include taxes, insurance, HOA, maintenance, capital reserves, management and utilities you pay.
Net operating income: effective rental income minus operating expenses, before the mortgage. It measures the property itself, independent of financing.
Cap rate = annual NOI / purchase price. Typical ranges are about 4-10% depending on location and risk; higher usually means more income but often more risk.
Annual cash flow / total cash invested (down payment, closing costs and repairs). It shows the yield on the money you actually put in.
Debt service coverage ratio = NOI / mortgage payments. Lenders often want at least 1.2 to 1.25.
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