Rental Property Cash Flow

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Enter the purchase, the loan, the rent, and the expenses. See whether the property cash flows each month and the return on the cash you put in.

Your numbers

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Monthly cash flow

Net cash flow
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Cash-on-cash return divides annual cash flow by the cash invested (down payment). It ignores closing costs, vacancy, appreciation, principal paydown, and tax effects, which all change real returns. Use it to compare deals, not as a full projection.
About this calculator

Rental Property Cash Flow

A rental property calculator estimates whether a property earns money each month and the return on the cash you invest. Enter the purchase, the loan, the rent, and the operating expenses to see net cash flow and cash-on-cash return.

Cash flow and cash-on-cash return

Monthly cash flow is the rent left after the mortgage and operating expenses. Cash-on-cash return divides the yearly cash flow by the cash you put in, mostly the down payment, giving a clean way to compare deals of different sizes. A positive cash flow with a solid cash-on-cash return is the mark of a property that pays you while you hold it.

What this simple view omits

Real returns include more than monthly cash flow: principal paydown builds equity, appreciation can add value, and depreciation shelters some income from tax. On the cost side, vacancy, repairs, and management fees eat into rent. This tool focuses on the core cash-flow math, so pad your expense figure for vacancy and upkeep to stay realistic.

How to use it

  1. Enter the purchase price and your down payment percent.
  2. Set the loan rate and term.
  3. Enter the monthly rent you expect.
  4. Add monthly operating expenses to see cash flow and return.

Frequently asked questions

What is a good cash-on-cash return?

Many investors look for figures in the high single digits or better, but it depends on the market and risk. Compare against other deals and safer alternatives.

Should the mortgage be in operating expenses?

Keep the mortgage separate. Operating expenses cover taxes, insurance, management, and upkeep; the loan payment is subtracted alongside them to find cash flow.

Does this include vacancy?

Not automatically. Raise your expense figure to reserve for vacancy and repairs, which every rental eventually faces.

See the exact formula and a worked example on our methodology page.

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