Cap Rate vs. Cash-on-Cash: Which Tells the Real Story at 7.5% Rates?
With mortgage rates hovering around 7.5%, the gap between a property’s theoretical value and what you actually pocket has never been wider. Two metrics—cap rate and cash-on-cash return—are often used side-by-side, but they answer very different questions. Knowing which one to trust (and when to ignore the other) can save you from buying a deal that looks good on paper but bleeds cash every month.
Cap Rate: The Market’s Temperature
Cap rate measures a property’s net operating income (NOI) as a percentage of its purchase price. It’s simple: NOI ÷ property value = cap rate. A 7% cap rate means the property generates 7% of its price in annual income, assuming no debt.
At 7.5% interest rates, cap rates matter most when you’re comparing properties in the same market. If similar buildings trade at 6% caps and you find one at 8%, something is off—maybe deferred maintenance, bad tenants, or a declining area. Cap rate is a market comp tool, not a personal profit gauge.
The problem: cap rate ignores your financing. A property with an 8% cap rate sounds great, but if your mortgage costs 7.5%, you’re only keeping 0.5% before expenses like vacancies, repairs, and management. That’s thin.
Use a Cap Rate Calculator to quickly compare properties. But don’t stop there.
Cash-on-Cash: Your Actual Money at Work
Cash-on-cash return divides your annual pre-tax cash flow by the total cash you invested (down payment, closing costs, renovation). It tells you how hard your actual dollars are working.
Example: You buy a $200,000 property with a 7.5% cap rate ($15,000 NOI). You put 20% down ($40,000) plus $10,000 in closing costs—$50,000 total cash. After your mortgage payment (7.5% on $160,000 = $12,000 in interest alone, plus principal), your cash flow might be $1,500. Cash-on-cash = $1,500 ÷ $50,000 = 3%.
That 7.5% cap rate turned into a 3% cash-on-cash return. Not terrible, but not the 7.5% you saw on the listing.
At 7.5% rates, cash-on-cash is the more honest metric. It accounts for leverage, which is the real profit driver—or killer. A property with a lower cap rate but better financing terms (seller financing, lower down payment) can produce a higher cash-on-cash return.
Use a Cash-on-Cash Calculator to test different down payment and rate scenarios before you make an offer.
When Cap Rate Wins
Cap rate is still useful when:
- You’re comparing all-cash purchases (no debt).
- You’re valuing a property for sale (buyers compare cap rates).
- You’re in a rising rate environment and want to see how much income cushion exists above your mortgage cost.
If a property’s cap rate is above 7.5% (your assumed mortgage rate), you have positive leverage. If it’s below, you’re subsidizing the loan with cash flow—or worse, negative cash flow.
When Cash-on-Cash Wins
Cash-on-cash matters when:
- You’re using a mortgage (most investors).
- You want to know your actual return on the cash you could put in a CD, stock market, or second property.
- You’re comparing two properties with different financing structures.
At 7.5% rates, cash-on-cash is your survival metric. If the number is below 4-5%, you’re better off in a high-yield savings account with zero risk.
The Real Decision at 7.5% Rates
Here’s the hard truth: many properties that penciled out at 5% rates fail at 7.5%. The solution isn’t to ignore cap rate or cash-on-cash—it’s to use both correctly.
Step 1: Screen with cap rate. Don’t look at anything below 7.5% unless you have seller financing at a lower rate. A 6% cap property at 7.5% financing is a guaranteed cash flow problem.
Step 2: Model with cash-on-cash. Run the numbers with your actual down payment, rate, and expenses. Aim for at least 6-8% cash-on-cash to justify the risk and hassle of being a landlord.
Step 3: Check debt coverage. Lenders use DSCR (debt service coverage ratio) to approve loans. A DSCR below 1.25 means the property barely covers its debt. Use a DSCR Calculator to see if your deal qualifies for financing.
Step 4: Run full pro forma. Cap rate and cash-on-cash are inputs, not conclusions. A Rental Property Calculator lets you model vacancy, repairs, management, and appreciation—so you see the full picture.
Step 5: Verify NOI. Both metrics rely on accurate net operating income. Sellers inflate NOI by excluding repairs or self-managing. Use an NOI Calculator to strip out puffery and get the real number.
Which One Actually Matters?
At 7.5% rates, cash-on-cash matters more for your personal finances, but cap rate matters more for market timing. If you buy a property with a 6% cash-on-cash return in a market where similar properties trade at 5% caps, you’re overpaying. If you buy a property with a 4% cash-on-cash return but an 8% cap rate, you likely have a financing problem, not a property problem.
The smartest move: use cap rate to find the right market and property type, then use cash-on-cash to decide if you can make the numbers work with your money and your rate.
Don’t buy a property because the cap rate looks good. Don’t reject one because the cash-on-cash is low—maybe seller financing or a rate buy-down can fix it. Run both numbers, every time.
Run your next deal through arvcalc.com before you make an offer. Cap rate, cash-on-cash, DSCR, NOI, and full rental property analysis—all in one place. No spreadsheets. No guesswork. Just the real numbers at today’s rates.
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