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Rental Property Calculator

Cash flow, cap rate and ROI on any rental.

Details

Results

Monthly cash flow
Annual cash flow
Cap rate
Cash-on-cash return
Total ROI

Estimate for planning. Not financial or investment advice.

How it works

We compute the mortgage, subtract operating expenses (taxes, insurance, HOA, maintenance, vacancy, management) from effective rent, then derive cap rate, cash-on-cash and total ROI.

Cap rate vs cash-on-cash: cap rate ignores your loan; cash-on-cash measures return on cash invested.

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The four numbers that decide a rental

Cash flow is what hits your pocket monthly after every expense including the mortgage. Cap rate ignores financing and shows raw earning power (NOI ÷ price) — best for comparing deals. Cash-on-cash measures return on the cash you invested. Total ROI adds the principal you pay down each year, which is real equity even when cash flow is thin.

Don’t skip the boring expenses

Forgetting vacancy, maintenance and management is how a deal that "cash flows" on paper bleeds money in real life. This calculator includes them by default — adjust the percentages to your market and a marginal deal reveals itself before you sign.

Good to know

FAQs

What is a good cap rate?

Often 5–10% depending on market and risk.

What is cash-on-cash return?

Annual cash flow divided by the cash you invested.

Why include vacancy/maintenance?

Ignoring them overstates returns; they're real recurring costs.

Is this investment advice?

No — it's a planning estimate.