Free Rental Property Spreadsheet: the one-sheet deal screener
Type in a listing's price, rent, and real expenses and get the five numbers that decide a rental: monthly cash flow, cash-on-cash return, cap rate, DSCR, and the 1% rule, each with a plain YES / MAYBE / NO verdict. Every formula is machine-verified before release.
Inputs for price, closing costs and rehab, down payment, rate and term, rent, a vacancy allowance, operating expenses, and a CapEx reserve. The hints tell you what people usually forget.
Calculated loan amount, mortgage payment, cash invested, effective rent after vacancy, NOI, monthly and annual cash flow, cash-on-cash, cap rate, DSCR, and rent-to-price.
A five-line deal screen with colour-coded verdicts: cash flow positive, cash-on-cash at or above 8%, DSCR at or above 1.25 (MAYBE between 1.0 and 1.25), the 1% rule, and cap rate above your loan rate.
A one-page guide on the second tab: how to read each number and the expenses that quietly break most deals.
How to use it
Download the file. In Google Sheets choose File, Import, Upload. In Excel just open it.
Type over the yellow cells with the listing you are looking at. Use a real operating-expense number: taxes, insurance, maintenance, management, HOA. If it is under 30% of rent you have probably missed something.
Read the verdicts. A deal that fails cash flow is a deal you pay to own. A DSCR under 1.20 will be hard to finance on a DSCR loan. Then change the price to see what number makes it work, which is your offer.
What it deliberately does not do
This is year-one cash math. It does not model income tax, depreciation, rent growth against expense growth, a refinance, or the sale. Those are the questions you ask once a deal passes the screen, and they need a proper model rather than one sheet. That is what the paid analyzer is for: the Lite version ($7.99 on Etsy) adds a year-one after-tax view with depreciation and a rent-versus-price sensitivity grid, and the Pro version adds a five-year pro-forma, refinance and BRRRR analysis, and stress tests. If this free sheet is enough for you, keep it. It is yours.
The formulas, so you can check them
Mortgage payment = loan × (r ÷ 12) ÷ (1 − (1 + r ÷ 12)−12n), the standard amortization formula.
NOI = rent × (1 − vacancy) − operating expenses. The mortgage is never in NOI.
Cap rate = annual NOI ÷ price. DSCR = annual NOI ÷ annual debt service. Rent-to-price = monthly rent ÷ price.
On the sample deal in the file ($235,000, $2,300 rent, 20% down at 7%, $725 expenses, 5% vacancy, 5% CapEx) the screener returns about $94 a month of cash flow, 1.7% cash-on-cash, a 7.5% cap rate, a DSCR of 1.17, and 0.98% rent-to-price: a marginal deal that cash-flows but would struggle to finance. That is exactly the kind of deal the screen exists to catch.
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