Rental Math Desk

Rental property calculator and worksheet

Type in a few numbers to see cash flow, cap rate and cash-on-cash return. Prefer paper? Print this page as it is, and it comes out as a blank worksheet.

Everything is calculated in your browser. Nothing you type is sent anywhere.

1. The property and the loan

$
$
$
%
yrs

2. Monthly income

$
$

3. Monthly expenses (not including the mortgage)

$
$
$
$
$
$

4. Results

Net operating income (NOI) per year(income − expenses) × 12
–
Cap rateNOI ÷ purchase price
–
Monthly mortgage paymentPrincipal and interest only
–
Cash flow per monthIncome − expenses − mortgage
–
Cash flow per year
–
Total cash investedDown payment + closing costs + repairs
–
Cash-on-cash returnCash flow per year ÷ total cash invested
–

Estimates for learning only. The mortgage figure covers principal and interest, not escrowed taxes or insurance, and real costs vary. This is not financial, tax or investment advice. The example numbers are made up for illustration.

Running this for every listing gets slow. See how an analysis app handles it.