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Aditya Kasturi | Realogics Sotheby's International Realty

Cap Rate vs. Cash-on-Cash Calculator

A property always sounds good in conversation. Run both return metrics before you believe the pitch.

Washington property used for investment and rental planning.

Investment and Rental

What this article helps you decide

> Cap rate ignores your financing; cash-on-cash is all about it. Run both with the same honest assumptions and you'll stop overpaying for stories.

Work through the decision in order

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Cap Rate vs. Cash-on-Cash Calculator

Use the worksheet without a form. Keep your notes in this browser, then bring the live facts into a Real Estate Review if the decision still matters.

Questions about Cap Rate vs. Cash-on-Cash Calculator

Clear answers first. If one question changes the deal, bring it into the review before you move money.

Q1What's the difference between cap rate and cash-on-cash?+

Cap rate is unlevered (NOI ÷ price), so it ignores financing and compares properties on equal footing. Cash-on-cash is all about financing — annual pre-tax cash flow ÷ cash invested — and tells you what your actual money earns. You need both.

Q2Which metric should I use for what?+

Cap rate to compare properties against each other; cash-on-cash to judge what your specific down payment and loan return. A property can have a fine cap rate and a poor cash-on-cash once financing is in — that's why one number alone lies.

Q3What assumptions make a deal look better than it is?+

Understated vacancy, management, and capital expenditures. Cash-on-cash "looks great" mostly by omitting real costs — re-run with honest vacancy and a capex reserve and the story often changes.

Q4What's the 1% rule and is it useful here?+

It's a screen: monthly rent near 1% of purchase price earns a deeper look. At Eastside prices most in-city homes fail it badly, which is exactly why the local investor case leans on tax benefit, not rent-to-price.

Q5What counts in NOI — and what doesn't?+

NOI is rental income minus operating expenses (taxes, insurance, management, maintenance, vacancy) — but not your mortgage. Mixing debt service into NOI inflates the cap rate, so keep financing out of cap rate and in cash-on-cash.

Q6I have a deal that looks good — what next?+

Re-run both metrics with realistic vacancy and capex before you believe the pitch. Pressure-testing a real deal's numbers is part of a Real Estate Review.

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Last updated: August 2, 2026

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