Cap Rate vs Cash-on-Cash Return: What Every Real Estate Investor Needs to Know
Both metrics measure profitability, but they tell you different things. Here is when to use each one and why both matter.
Re:InvestorHub Team · · Deal Analysis
When you start evaluating rental properties, two numbers come up constantly: cap rate and cash-on-cash return. They both measure profitability, but they answer different questions. Using one when you need the other will lead you to bad decisions.
What Is Cap Rate?
The capitalization rate tells you how much income a property generates relative to its value, ignoring how you financed it. It is calculated by dividing Net Operating Income (NOI) by the current property value or purchase price.
Cap rate is most useful for comparing properties on an apples-to-apples basis or for evaluating what a property is worth in the context of a local market. If the market cap rate for single-family rentals in a zip code is 6 percent, a property with a 4 percent cap rate is overpriced for that market.
What Is Cash-on-Cash Return?
Cash-on-cash return measures the actual cash income you receive relative to the cash you invested. It accounts for your mortgage payment, which cap rate ignores entirely. The formula is: annual pre-tax cash flow divided by total cash invested.
This is the number that tells you whether a leveraged investment is actually putting cash in your pocket. A property with a 6 percent cap rate might have a 10 percent cash-on-cash return if financed at a favorable rate, or a 3 percent cash-on-cash if financed at a high rate.
The Core Difference
- Cap rate: ignores financing; great for comparing properties or valuing an asset
- Cash-on-cash: includes financing; tells you what you actually earn on your invested dollars
- Cap rate is a property metric; cash-on-cash is an investor metric
When to Use Cap Rate
Use cap rate when you are comparing multiple properties in the same market, when you are valuing a property to determine if the asking price is fair, or when you are doing market research to understand what investors are paying for income in a given area.
When to Use Cash-on-Cash Return
Use cash-on-cash when you are evaluating how a specific deal works for you personally. Your interest rate, down payment, and loan terms all affect this number, which means the same property can have very different cash-on-cash returns for two different buyers.
A Quick Example
You are buying a duplex for $200,000. NOI is $14,000 per year. Your down payment is $50,000, and your annual mortgage payments total $10,200.
- Cap rate: $14,000 / $200,000 = 7.0%
- Annual cash flow: $14,000 - $10,200 = $3,800
- Cash-on-cash return: $3,800 / $50,000 = 7.6%
Now imagine rates go up and your mortgage payment rises to $12,600. The cap rate stays at 7 percent (it does not care about your financing), but your cash-on-cash drops to 2.8 percent. Suddenly the deal looks very different.
The Bottom Line
Professional investors use both. Cap rate helps you evaluate whether a property is fairly priced in its market. Cash-on-cash tells you whether the deal actually works given your specific financing. Use cap rate to filter and compare; use cash-on-cash to make the final call.