Rental Property Calculator
Cash flow, cash-on-cash, cap rate, DSCR, and break-even rent. Free, no signup.
Deal Inputs
Assumes 3% closing costs and $50/mo miscellaneous. Sign up to adjust every assumption and save the deal.
Results
Skip the typing entirely.
Upload a screenshot of any Zillow, Redfin, or MLS listing and Realastat extracts the inputs, applies regional market assumptions, and returns the full underwriting in under a minute. 3 free analyses.
Start Free. No Credit Card Required.The metrics that decide a rental deal
Cash flow tells you whether the property pays you monthly. Cash-on-cash return measures that cash flow against every dollar you put in, including closing costs and rehab, not just the down payment. DSCR is what your lender checks: NOI divided by the loan payment, with 1.20 as the common bar. Break-even rent shows how far rents can fall before you write checks to keep the property.
Budget the expenses everyone skips
Vacancy, maintenance, and CapEx reserves are the difference between projected and actual returns. This calculator defaults to 7% vacancy and 8% each for management, maintenance, and CapEx. Realastat's full analysis goes further and sets these by region: 9.5% vacancy in supply-heavy Texas, 5.5% in coastal markets, because one national default flatters some markets and buries others.