Cash on Cash Return vs Cap Rate: Which Should You Use?

Last reviewed April 2026

I get this question constantly: "Should I focus on cap rate or cash on cash return when evaluating a rental?" The short answer is both, but I weight them very differently depending on whether I'm financing the deal. Let me walk you through how I actually think about it.

What Each Metric Measures

Cap rate is unlevered. It tells you what the property earns on its own, ignoring how you paid for it. Cash on cash return is levered. It tells you what your actual money is earning after you account for the mortgage. They're answering two different questions, which is why neither one alone gives you the full picture.

Here's the cleanest way to think about it. If a friend asked you "how good is this property?" you'd quote cap rate. If they asked "how good is this deal for me with my financing?" you'd quote cash on cash return. The property is a constant. The deal depends on your money.

An Example That Shows Why It Matters

Let's run the same property through both metrics. We'll use a $200,000 single-family rental that brings in $1,800 a month. After all operating expenses, NOI is $12,384. So the cap rate is $12,384 divided by $200,000, which is 6.19 percent.

Now let's finance it three different ways and see what cash on cash return looks like, using the current 30-year fixed mortgage rate of 6.37 percent from FRED.

Same property. Same cap rate. Three different cash on cash returns. And depending on the rate environment, the cash on cash return on the leveraged scenarios may be worse than what you could get on a high-yield savings account. The cap rate told you the property was decent. The cash on cash return told you whether the deal works for you specifically. Both metrics were correct. They were just answering different questions.

When Cap Rate Wins

If you're paying cash for a property, cap rate is your return. End of story. Don't even bother running cash on cash return because there's no "cash" in cash on cash without financing. Cap rate also wins when you're comparing two properties side by side and you want to know which one is intrinsically better as a piece of real estate, regardless of how the buyer might finance it. That's why commercial brokers quote cap rates almost exclusively. Buyers in commercial deals often have very different financing setups, so cap rate is the only fair comparison.

When Cash on Cash Return Wins

If you're financing the deal, cash on cash return is the number that tells you whether the deal works for you specifically. Two investors looking at the same property with different down payments and different rates will get different cash on cash returns, and that's the point. Cash on cash return is personal in a way cap rate isn't. It's also the metric I check when I'm deciding whether buying a rental property is a better use of my money than just leaving it in something safe and liquid.

What Both Metrics Miss

Neither cap rate nor cash on cash return captures appreciation, principal paydown, or tax benefits. Those are real returns. Principal paydown alone can add 2 to 4 percentage points to your effective annual return in the early years of a mortgage. Appreciation can add another 2 to 5 percentage points in a healthy market. And depreciation can shelter a significant chunk of your rental income from taxes. So a property with a 6 percent cash on cash return might really be earning you 12 percent or more on a total return basis. That's why I always look at the 5-year ROI projection in LandlordCalc alongside the year-one metrics. The full picture is bigger than either single number.

The Way I Actually Use Both

Here's my workflow. I screen properties with the 1 percent Rule first because it takes three seconds. Then I check the cap rate to see if the property has good intrinsic numbers. If the cap rate is healthy, I run cash on cash with my actual financing assumptions to see if the deal works for me. Then I check DSCR to make sure it qualifies for a loan. Then I look at the 5-year ROI projection to see what the deal looks like over a real hold period. That's five different metrics, and the LandlordCalc calculator shows them all on one screen so I'm not flipping between tabs.

The bottom line: don't pick one metric and ignore the other. Cap rate tells you whether the property is a good piece of real estate. Cash on cash return tells you whether the deal is a good use of your specific dollars. Use both, weight them based on whether you're financing, and never make a buy decision off a single number.

Frequently Asked Questions

What's the main difference between cap rate and cash on cash return?

Cap rate is unlevered and ignores financing. It shows what the property earns on its own. Cash on cash return is levered and factors in your mortgage. It shows what your actual cash investment is earning. Cap rate evaluates the property; cash on cash evaluates the deal for you specifically.

Which metric is more important for rental property investing?

It depends on whether you're financing. If you're paying cash, cap rate is your return. If you're financing, cash on cash return is the more relevant number because it tells you the actual yield on the cash you put in.

Can a property have a good cap rate but a bad cash on cash return?

Absolutely, and it's common in higher-rate environments. A 6% cap rate property financed when rates are 7% has negative leverage, meaning you can have a decent cap rate but barely break even on cash flow. Always run both metrics together.