Rental Property Calculator

Enter property and income/expense details to analyze performance.

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NOI (Annual) = (Gross Income − Vacancy) * 12 − (Operating Expenses * 12) Cap Rate (%) = NOI / Property Value * 100 Monthly Cash Flow = Gross − Vacancy − Operating Expenses − CapEx Reserves − Mortgage
Example: Value $250,000 | Rent $2,000 | Other $0 | Expenses $600 | Vacancy 5% | CapEx 5% | Mortgage $900 Gross = $2,000; Vacancy = $100; CapEx = $100 NOI (Annual) = (2,000 − 100) * 12 − 600 * 12 = $15,600 Cap Rate = 15,600 / 250,000 * 100 = 6.24% Monthly Cash Flow = 2,000 − 100 − 600 − 100 − 900 = $300

What is cap rate vs cash-on-cash?

Cap rate = NOI / Value. Cash-on-cash = Annual Cash Flow / Cash Invested. This tool reports cap and a rough ROI using monthly cash flow vs value.

How is NOI computed?

NOI = (Gross Income − Vacancy) * 12 − (Operating Expenses * 12). Mortgage payments are not part of NOI.

What vacancy and CapEx should I use?

Common assumptions: 5% vacancy, 5–10% CapEx. Adjust based on market and property age/condition.

Does this include taxes/insurance/HOA?

Include these in Monthly Operating Expenses to reflect your true operating costs.

Is this suitable for flips?

This is a buy-and-hold rental model. For flips, use a dedicated fix-and-flip ROI calculator.

What is cap rate?

Cap Rate = NOI / Property Value. NOI is net operating income before financing.