How do I calculate rental cash flow? Enter your numbers above and the result updates instantly. For example: Monthly rent: $2,400 · Vacancy: 5% · Monthly operating expenses: $700 · Monthly mortgage payment (P&I): $1,450 → Monthly cash flow: $130.00.
Is this Rental Cash Flow Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for rental cash flow. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.