The Confusion Between Cap Rate and Cash on Cash
Ask investors which metric they use to evaluate rental properties and you will hear more than one answer. Some swear by cap rate. Others only look at cash-on-cash return. It is easy to use both without fully understanding what each one measures — or when one is more useful than the other.
The confusion is understandable. Both metrics express investment performance as a percentage. Both are used to compare properties. But they measure fundamentally different things, and using the wrong one for the wrong purpose leads to bad investment decisions.
What Is Cap Rate?
Capitalization rate — cap rate — measures a property's income-producing potential independent of financing. It tells you what the property would return if you paid all cash with no mortgage.
Cap Rate = Net Operating Income / Property Value
Net Operating Income (NOI) = Gross Rental Income minus Vacancy minus Operating Expenses (taxes, insurance, management, maintenance). NOI does not include mortgage payments or the capital reserve for long-lived items such as a roof or furnace. Quoted cap rates are figured on NOI before that reserve, so it comes out after NOI and before cash flow.
Cap Rate Example
- Property value: $200,000
- Gross annual rent: $21,600
- Vacancy (8%): $1,728
- Operating expenses: $6,500
- NOI: $21,600 minus $1,728 minus $6,500 = $13,372
- Cap Rate: $13,372 / $200,000 = 6.7%
A 6.7% cap rate means if you paid all cash for this property, you would earn a 6.7% annual return on your investment before debt service and before the capital reserve.
What Is Cash on Cash Return?
Cash-on-cash return measures your actual annual cash flow as a percentage of the cash you invested. It accounts for financing — your mortgage payment is included in the calculation.
Cash on Cash Return = Annual Pre-Tax Cash Flow / Total Cash Invested
Annual Pre-Tax Cash Flow = NOI minus Capital Reserve minus Annual Debt Service (mortgage payments)
Total Cash Invested = Down payment plus closing costs plus any immediate repairs
Cash on Cash Example
- NOI: $13,372 (same property as above)
- Capital reserve (hypothetical): $1,380
- Annual debt service (hypothetical: 80% LTV, 7.5%, 30yr): $13,425
- Annual cash flow: $13,372 minus $1,380 minus $13,425 = −$1,433
- Total cash invested (20% down plus closing costs): $43,140
- Cash on Cash Return: −$1,433 / $43,140 = −3.3%
Same property. A 6.7% cap rate, but a negative cash-on-cash return. Debt service of $13,425 at the assumed rate takes more than the $13,372 of NOI on its own, and the $1,380 capital reserve, which the cap rate leaves out, deepens the loss.
The Key Differences
Cap Rate Ignores Financing. Cash on Cash Does Not.
This is the most important distinction. Cap rate is a property metric. Cash-on-cash return is an investor metric. Cap rate tells you about the asset. Cash-on-cash tells you about your specific deal given your specific financing terms.
Two investors buying the same property at the same price will have the same cap rate but different cash-on-cash returns if they use different financing — different down payments, different interest rates, different loan terms.
Cap Rate Is a Comparison Tool. Cash on Cash Is a Decision Tool.
Cap rate is most useful for comparing properties to each other and to market benchmarks. If the market cap rate for single family rentals in a neighborhood is 6.5% and a property is priced at a 5% cap rate, it is overpriced relative to the market.
Cash-on-cash return answers the question many investors care about most: how much cash does this deal put in my pocket relative to the cash I put in?
When to Use Each Metric
Use Cap Rate When:
- Comparing multiple properties to each other regardless of how you plan to finance them
- Evaluating a market or neighborhood — what cap rates are properties trading at?
- Analyzing commercial or multifamily properties where financing structures vary widely
- Estimating property value — divide NOI by market cap rate to back into a value
Use Cash on Cash Return When:
- Evaluating a specific deal with specific financing terms
- Comparing your return to other investments — stocks, bonds, other real estate
- Deciding whether a deal meets your minimum return threshold
- Analyzing the impact of different financing structures on the same property
What Are Good Benchmarks?
Cap Rate Ranges
These are rough ranges some investors use as a starting point, not market data; what counts as strong depends on the market, the property, and borrowing costs.
- Below 4%: Expensive market, appreciation play, minimal income return
- 4-6%: Average market, balanced income and appreciation
- 6-8%: Strong income market, good cash flow potential
- Above 8%: High yield market, often higher risk or slower appreciation
Cash on Cash Return Ranges
These are rough ranges some investors use as a starting point, not market data; what counts as strong depends on the market, the property, and borrowing costs.
- Below 4%: Weak deal when borrowing costs are high — capital is better deployed elsewhere
- 4-6%: Acceptable in strong appreciation markets
- 6-8%: Good return by many investors' thresholds
- Above 8%: Strong on this measure
When interest rates are high, achieving strong cash-on-cash returns on leveraged deals requires either below-market acquisition prices, creative financing structures, or value-add execution that increases NOI after purchase.
Which Metric Matters More?
For a leveraged residential investor, cash-on-cash return is often the more actionable metric. It reflects your actual experience as an investor — the cash that hits your account relative to the cash you deployed.
Cap rate matters most when you are comparing properties or evaluating whether a market makes sense. Once you have identified a target property and have financing terms in hand, cash-on-cash return tells you whether to buy.
Using both gives you the fuller picture. Cap rate to filter and compare. Cash-on-cash to decide.
How Appraize Calculates Both Metrics
Appraize calculates cap rate and cash-on-cash return automatically for every buy and hold analysis. Enter a property address, input your financing terms, and get both metrics instantly alongside your full income and expense projection. Compare the buy and hold exit against BRRRR, seller finance, and lease option on the same property to find the highest-returning strategy.
Analyze your next rental property at Appraize. Get cap rate, cash-on-cash return, and full cash flow analysis in under 30 seconds.
The Bottom Line
Cap rate and cash-on-cash return are not competing metrics — they answer different questions. Cap rate tells you about the property. Cash-on-cash tells you about your deal. Use cap rate to compare and filter. Use cash-on-cash to decide. Use both to build a portfolio that performs.
