RentalCalcAbout

Rental Property Cash Flow Calculator

Enter a deal and see cash flow, cash-on-cash return, cap rate and DSCR instantly. Nothing is uploaded — everything runs in your browser.

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Purchase & loan
Income (monthly)
Expenses
Projection

Results

Monthly cash flow
Cash-on-cash return
Cap rate
NOI (monthly)
Mortgage P&I
Total cash invested
DSCR
Rent-to-price (1% rule)

YearNOICash flowCumulative CFValueLoan balanceEquity
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How to calculate rental property cash flow

Cash flow = rent − vacancy − operating expenses − mortgage payment. Operating expenses include property tax, insurance, HOA, maintenance, capital expenditure reserves (roof, HVAC, appliances), property management and any utilities you pay. Net operating income (NOI) is income minus operating expenses before the mortgage.

Key metrics explained

Common mistakes

Forgetting vacancy and CapEx, using the seller's rent numbers, and ignoring rising insurance and taxes. Use the projection table to stress-test growth assumptions.

FAQ

What is a good cash flow per door?

Many investors target $100–$300 per unit per month after all reserves, but it depends on market and strategy.

What is a good cash-on-cash return?

Commonly cited targets are 8–12%, but appreciation markets often accept less.

Is my data saved?

No. Calculations run locally. The share link stores your inputs in the URL only.

Does it include taxes on income or depreciation?

No — results are pre-income-tax. Consult a tax professional.