FREE RENTAL DEAL ANALYZER

Underwrite any rental deal in 30 seconds

Free spreadsheet with verified DSCR, cash flow and cash-on-cash math. No signup.

Excel, Google Sheets, Numbers or LibreOffice. Nothing to install.

quick-dscr.check
DSCR
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CASH FLOW / MO
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CASH-ON-CASH
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Example numbers, edit them. This is the quick check; the free analyzer adds vacancy, repairs and management.
Quick check uses P&I + tax + insurance. The free LITE analyzer runs the full 61-formula underwrite.
61 machine-verified formulas $0, no signup built for WA investors, works anywhere honest math: shows deals that fail

What you get in the free analyzer

One spreadsheet. Enter a listing's numbers once, read the verdict before you drive to the property.

Full underwrite, one screen

Rent, price, loan and operating costs in on the left. DSCR, monthly cash flow and cash-on-cash out on the right, recalculated live. The workbook ships with a real $385K Washington deal, including one that honestly fails, so you can see what a bad deal looks like before it costs you earnest money.

DSCR with lender bands

Colored against real lender thresholds: green at 1.25+, amber near 1.0, red below. Know which lane your deal lands in.

1.25xTHE LENDER LINE

Cash-on-cash, true basis

Return on real cash in: down payment, closing costs and reserves. Not the marketing version.

-LIVE FROM THE CALCULATOR

Rate sensitivity

See monthly payment per quarter-point. Know your maximum offer before rates move again.

1% rule check

Rent-to-price screen at a glance, with the honest note about when that rule no longer works.

-RENT / PRICE

The math, out in the open

Every formula in the workbook is standard underwriting. Here are the three that decide most deals, and the bands lenders actually use.

DSCR

DSCR = NOI / annual debt service
NOI = gross rent - vacancy - operating costs

Can the property pay its own loan from its own rent? Lenders underwrite the property, not you, on most investment loans.

1.25x or higherstrong, financeable
1.00x to 1.25xthin, expect pricing hits
below 1.00xnegative cash flow, walk

Cash-on-cash return

CoC = annual pre-tax cash flow / cash invested
cash in = down + closing + reserves

What your actual dollars earn per year. A deal can pass DSCR and still bore your money to death.

8%+worth a second look
4% to 8%appreciation bet
below 0%you are paying to work

Loan payment (P&I)

M = L x r / (1 - (1 + r)^-n)
r = monthly rate, n = 240 months

The standard amortization formula, verified cell by cell. Change the rate a quarter point and watch the DSCR move.

Why the free version shows a failing deal

The LITE ships with a real $385K Washington analysis that scores 0.76x. A calculator that only shows winners is a toy. You get to see the walk-away math before your agent schedules the showing.

Three steps, one evening

From listing tab to go/no-go decision without building your own spreadsheet from scratch.

01

Download the LITE

Free from our Gumroad store. Opens in Excel, Sheets, Numbers or LibreOffice.

02

Enter the listing numbers

Rent, price, loan terms, tax and insurance. Everything recalculates live with colored verdicts.

03

Decide before the showing

Green: make the offer. Amber: sharpen the offer. Red: next listing, tonight.

Questions, answered straight

Is the calculator really free?

Yes. The LITE analyzer is a free spreadsheet download. No signup, no card, no trial that flips to paid.

Do I need Excel?

Any modern spreadsheet app works: Excel, Google Sheets, LibreOffice, Apple Numbers.

What is a good DSCR?

Most lenders want 1.20 or higher, and 1.25 is the clean line. Below 1.0 the property loses cash every month. The workbook colors each deal against those bands.

Are the formulas verified?

All 61 formulas were machine-audited against standard underwriting math: DSCR, NOI, amortized payment, cash-on-cash and the rest. The audit harness and results ship with the product.

Is this only for Washington?

The math is universal. Preloaded tax and insurance context is Washington (Pierce and King County), so if you invest here it is ready on day one.

What is in the paid full version?

Vacancy and repair schedules, property management, capex reserves and 5-year exit projections with sale costs. It is in build now; the waitlist below gets first access.

Get the next tool first

The full analyzer is in build. One email when it lands, plus new free tools as they ship. No noise, unsubscribe anytime.

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  • 61 verified formulas, free forever
  • Real WA deal example, winner and loser
  • Lender DSCR bands built in
  • Works in Excel, Sheets and Numbers
Download the free analyzer