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Cash-on-cash return vs cap rate vs ROI

By Cedrick Reese, Property Rental Calculator · Updated August 2026

Cash-on-cash vs. cap rate vs. ROI: three metrics that get used almost interchangeably, and that causes bad decisions. Cap rate measures the property, cash-on-cash measures your cash, and ROI measures your total return over time. Here's how to keep them straight.

Cap rate: the property's yield

Cap rate is annual NOI divided by the property value. It deliberately ignores your loan, so it describes the property as if you bought it with cash. That makes it a clean way to compare properties, but it says nothing about your actual return once financing is involved.

Cash-on-cash return: what your cash earns this year

Cash-on-cash return is your annual pre-tax cash flow divided by the total cash you put in (down payment, closing costs, and any upfront rehab). Pre-tax cash flow is NOI minus your annual mortgage payments. Because it includes both your financing and your actual out-of-pocket cash, it tells you what this year's dollars are earning. With leverage, cash-on-cash and cap rate will usually differ, sometimes by a lot.

Quick example. A property has a 6% cap rate. You finance it, and after the mortgage your annual cash flow is $6,000 on $70,000 invested. That's an 8.6% cash-on-cash return, higher than the cap rate because leverage amplified your return. Change the loan terms and the number moves, which is exactly the point.

ROI: the whole picture over time

Return on investment is the broadest of the three. A complete ROI looks past this year's cash and includes appreciation, the equity you build as the loan is paid down, and tax effects, measured over your whole holding period. It's the most complete view and the hardest to pin down, because it depends on assumptions about the future (how much the property appreciates, how long you hold it) that cash-on-cash and cap rate don't require.

How they can disagree

A property can have a modest cap rate, a strong cash-on-cash return because of favorable financing, and an even higher long-term ROI once appreciation and principal paydown are counted, or a lower one if values stall. None of the three is "the real number." They're three angles on the same deal.

Which to use when

• Comparing properties in a market: cap rate, because it strips out financing.
• Deciding what your cash earns now: cash-on-cash return.
• Judging the full long-term outcome: ROI, with clearly stated assumptions.

The Rental Property Calculator reports cap rate and cash-on-cash side by side so you can see the financing effect directly. For a deeper look at cap rate ranges, see what counts as a good cap rate.