Free Real Estate Investment Calculators

Everything you need to analyze a rental property deal — mortgage payments, cap rate, cash flow, DSCR, BRRRR, and a full deal analyzer. All free, all instant.

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Created by investors, for investors

Real Estate Investing Glossary

Key terms every investor should know before analyzing a deal.

NOI— Net Operating Income

Effective gross income minus all operating expenses, before the mortgage payment.

Cap Rate— Capitalization Rate

NOI ÷ Property Value. Measures return independent of financing. Higher = more income relative to price.

CoC— Cash-on-Cash Return

Annual cash flow ÷ total cash invested. Measures the actual return on your out-of-pocket investment.

DSCR— Debt Service Coverage Ratio

NOI ÷ Annual Mortgage Payment. Lenders require ≥1.25x. Below 1.0 means the property can't cover its debt.

GRM— Gross Rent Multiplier

Property Value ÷ Annual Gross Rent. A quick screening metric — lower is better. Under 12x is generally favorable.

BRRRR— Buy, Rehab, Rent, Refinance, Repeat

A strategy to recycle capital by buying distressed properties, renovating them, and pulling equity out via refinance.

How to Analyze a Rental Property

The three metrics that matter most when evaluating any investment property.

01

Net Operating Income (NOI)

NOI is your effective gross income minus all operating expenses — before the mortgage. A positive NOI means the property covers its own costs. Divide by the purchase price to get the Cap Rate.

02

Cash-on-Cash Return

CoC measures annual cash flow divided by your total cash invested (down payment + closing costs). A CoC of 6–8%+ is generally considered a solid return for a rental property.

03

Debt Service Coverage Ratio

DSCR = NOI ÷ Annual Mortgage Payment. Lenders typically require 1.25x or higher. A DSCR below 1.0 means the property doesn't generate enough income to cover the mortgage.