See your real monthly profit on a rental — after expenses and the mortgage. Enter three numbers to get monthly and annual cash flow.
Cash flow = rent − operating expenses − mortgage payment. Positive cash flow means the property pays for itself each month.
Cash flow is the money left in your pocket each month after every cost. A property can show a strong yield on paper but still be cash-flow negative once the mortgage is included. Positive monthly cash flow is what makes a rental sustainable long term.
When rent exceeds your expenses plus mortgage, the property generates surplus cash each month — positive cash flow.
Insurance, property management, maintenance reserves, property tax, HOA/service charges, and any utilities you pay. Don't double-count the mortgage.
Reduce vacancy, review expenses annually, refinance if rates drop, or adjust rent within local legal limits — check the rent increase laws page for your country.
RentFlow totals rent and expenses per property so your monthly cash flow updates itself. Free to start.
Get RentFlow — App StoreMore calculators: Rental Yield Calculator · Rent Increase Calculator & Legality Checker · Prorated Rent Calculator · Late Rent Fee Calculator · Mortgage Payment Calculator · Cash-on-Cash Return Calculator · 1% Rule Calculator · Security Deposit Calculator · Gross Rent Multiplier (GRM) Calculator · Net Operating Income (NOI) Calculator · Rent-to-Income Ratio Calculator · Vacancy Rate Calculator · Operating Expense Ratio (OER) Calculator
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