Buy a rental property with an 8% cap rate, and it’s tempting to assume an 8% return is locked in. Then the mortgage payment comes out of that same cash flow every month, and the number left over tells a different story. That gap between what a property “should” return and what lands in the bank account is exactly what cash-on-cash return is built to measure.
Quick Answer
Cash-on-cash return is the annual pre-tax cash flow a rental property produces, divided by the actual cash invested (down payment, closing costs, and any upfront repairs), expressed as a percentage. Unlike cap rate, it accounts for financing, so it shows how hard the dollars an investor spent are working, not the property’s full value. Many investors treat roughly 8% as a reasonable floor, though the right benchmark depends on the market, the financing terms, and how much risk an investor is willing to carry.
What Is Cash-on-Cash Return?
Cash-on-cash return is a real estate metric that measures the annual pre-tax cash flow a property generates against the actual cash an investor put into the deal, not the property’s full purchase price. It’s a leveraged metric: because most landlords finance a portion of a purchase with a mortgage, it isolates the return specifically on the money that came out of pocket, meaning the down payment, closing costs, and any repairs needed before the unit could be rented.
That distinction matters more than it sounds like it should. A landlord who pays cash for a property and one who puts 20% down on the identical property will see very different returns, even though the property performs exactly the same either way. Cap rate answers “how does this property perform on its own.” Cash-on-cash return answers a narrower, more personal question: given what an investor spent, how hard is that specific money working?
How to Calculate Cash-on-Cash Return
The formula has two inputs:
Cash-on-Cash Return = Annual Pre-Tax Cash Flow ÷ Total Cash Invested
Step 1: Find Annual Pre-Tax Cash Flow
Start with Net Operating Income (NOI): gross rental income minus operating expenses like property taxes, insurance, maintenance reserves, and any property management fees, but before mortgage payments. Then subtract annual mortgage payments (principal and interest) from NOI to arrive at pre-tax cash flow.
Step 2: Total Up the Cash Invested
Add every dollar that left the bank account to close the deal: down payment, closing costs, and any repairs or upgrades completed before the property was rent-ready. Leaving any of these out inflates the return and makes the deal look better than it is.
Step 3: Divide and Convert to a Percentage
Divide pre-tax cash flow by total cash invested, then multiply by 100. The result is the return specifically on the cash an investor put in, independent of the property’s overall value.
Instead of pulling these numbers together by hand each month, RentRedi’s Portfolio Performance dashboard calculates cash-on-cash return automatically from live rent collection, expense tracking, and the mortgage details a landlord enters, and the percentage updates as income, expenses, or loan balances change.
Cash-on-Cash Return in Action: A Worked Example
Consider a landlord like Priya, evaluating a two-bedroom rental. This is a common scenario for illustration, not a specific customer.
| Line Item | Amount |
|---|---|
| Purchase price | $280,000 |
| Down payment (25%) | $70,000 |
| Closing costs | $5,600 |
| Move-in-ready repairs | $3,000 |
| Total cash invested | $78,600 |
| Gross annual rent ($2,400/mo) | $28,800 |
| Operating expenses (taxes, insurance, maintenance & vacancy reserves) | $9,600 |
| Net Operating Income (NOI) | $19,200 |
| Annual mortgage payments (30-yr fixed at 6.65%) | $16,177 |
| Annual pre-tax cash flow | $3,023 |
| Cash-on-cash return | 3.8% |
At 3.8%, this deal falls short of the 8% benchmark many investors use as a starting point. That doesn’t automatically mean Priya should walk away, it means the numbers are pointing to something specific: at today’s mortgage rates, this property only pencils out with a larger down payment, a lower purchase price, or higher rent.
Compare that to the same property’s cap rate, NOI divided by purchase price, or $19,200 ÷ $280,000 = 6.9%, the unlevered return before financing enters the picture. The 3.1-point gap between the two numbers shows exactly how much of the return financing is eating into.
Cash-on-Cash Return vs. Cap Rate vs. NOI
These three metrics get used interchangeably in casual conversation, but they answer different questions.
| Metric | What It Measures | Formula | Priya’s Property |
|---|---|---|---|
| NOI | Core profitability before financing | Gross income minus operating expenses | $19,200 |
| Cap Rate | Return based on the full purchase price, ignoring financing | NOI ÷ purchase price | 6.9% |
| Cash-on-Cash Return | Return based on the actual cash invested, financing included | Annual pre-tax cash flow ÷ total cash invested | 3.8% |
NOI is the foundation both other metrics build on. Cap rate is useful for comparing properties on an apples-to-apples basis, since it ignores how any individual buyer chooses to finance the deal. Cash-on-cash return is the more personal number: it reflects the specific financing terms a landlord has, which is why the same property can show a 6.9% cap rate and a 3.8% cash-on-cash return at the same time.
What Counts as a Good Cash-on-Cash Return?
There’s no single “good” number, it depends on the market, the property type, and how much risk an investor is willing to carry. A commonly cited rule of thumb treats roughly 8% as a reasonable floor, with many investors targeting somewhere in the 8% to 12% range depending on the deal. A property below that range isn’t automatically a bad investment. Appreciation, tax benefits, and equity paydown all factor into total return too, but a low cash-on-cash return is worth scrutinizing before moving forward.
Financing terms move this number more than almost anything else. Freddie Mac’s weekly survey put the average 30-year fixed mortgage rate at 6.65% as of August 20, 2026, and leveraged deals are producing thinner cash-on-cash returns than they did when rates were lower, even on properties with strong NOI. That’s part of why the metric has become more useful, not less, in the current market: it surfaces financing risk that a cap rate or purchase price alone won’t show.
Common Mistakes to Avoid
Leaving Closing Costs and Repairs Out of “Cash Invested”
It’s tempting to calculate cash-on-cash return using only the down payment, but closing costs and any pre-rental repairs are real cash that left the bank account. Skipping them inflates the return and can make a mediocre deal look better than it is.
Using Gross Rent Instead of Pre-Tax Cash Flow
Cash-on-cash return is built on cash flow after operating expenses and mortgage payments, not the top-line rent check. Using gross rent in the numerator produces a number that has little to do with what lands in the owner’s account.
Comparing Returns Across Deals With Different Leverage
An all-cash purchase and a 20%-down purchase on the same property will show very different cash-on-cash returns, even though the underlying asset performs identically. Compare them only against deals with similar financing, and lean on cap rate when comparing across different leverage structures.
Treating One Year’s Return as the Whole Story
Cash-on-cash return is a single-year snapshot. A property with a slow first year, due to renovation costs or a longer vacancy while finding the right tenant, can look weak on this metric even if it’s a strong long-term hold. Track it year over year rather than judging a property on one calculation alone.
Tracking It Going Forward
Calculating cash-on-cash return by hand works fine for a single deal, but we hear from landlords who track it carefully at purchase, then let it lapse once rent, expenses, and loan balances start moving every month across a growing portfolio. RentRedi’s built-in accounting and reporting tools track income and expenses by property automatically, and that same data feeds the Portfolio Performance dashboard’s live cash-on-cash return, NOI, cash flow, and equity figures, so the number stays current without a separate spreadsheet.
Cash-on-cash return comes down to pre-tax cash flow divided by total cash invested, and it moves with financing terms more than almost anything else about a deal. Cap rate and NOI round out the picture, but cash-on-cash return is the number that reflects what a specific landlord actually put in and got back. A few follow-up questions come up often once landlords start running this on their own properties.
FAQ
What is a good cash-on-cash return?
There’s no universal answer, but a commonly cited rule of thumb treats roughly 8% as a reasonable floor, with many investors targeting 8% to 12% depending on the market and risk profile. Properties below that range can still be worthwhile once appreciation, tax benefits, and equity paydown are factored in, but the return is worth scrutinizing closely before committing.
How do I calculate cash-on-cash return by hand?
Subtract annual mortgage payments from Net Operating Income to get annual pre-tax cash flow. Then divide that number by the total cash invested, which includes the down payment, closing costs, and any repairs completed before the property was rent-ready. Multiply the result by 100 to express it as a percentage.
What’s the difference between cash-on-cash return and ROI?
Cash-on-cash return measures a single year’s cash flow against cash invested. Return on investment (ROI) is broader and typically includes appreciation, equity paydown, and gains from an eventual sale over the full holding period, not just one year’s cash flow. Cash-on-cash return is a snapshot; ROI is closer to the full picture.
Does cash-on-cash return account for property appreciation?
No. Cash-on-cash return only measures cash flow, not changes in property value. A property with a low cash-on-cash return can still be a strong long-term investment if it’s appreciating or building equity through mortgage paydown, which is why this metric works best alongside other measures, not as the only one used.
Why is my cash-on-cash return low even though the property cash flows?
A positive but low cash-on-cash return usually points to financing: a smaller down payment increases leverage but also increases the mortgage payment eating into cash flow, and higher interest rates compound that effect. Recalculating with a larger down payment or a lower purchase price often shows how much room there is to improve the number.
Should I use cash-on-cash return or cap rate to compare properties?
Use cap rate to compare properties on an apples-to-apples basis, since it ignores financing. Use cash-on-cash return to evaluate how a specific deal performs given the actual financing terms available. Looking at both together, rather than picking one, gives the clearer read on a property.
Does cash-on-cash return change from year to year?
Yes. As rent increases, operating expenses shift, or a fixed-rate mortgage payment stays flat while income grows, cash-on-cash return typically moves year to year. Tracking it annually, rather than calculating it once at purchase and never again, shows whether a property’s performance is improving.
The Bottom Line
Cash-on-cash return answers a question cap rate can’t: given the actual cash an investor put in, how hard is that money working right now? It won’t tell the whole story on its own, appreciation, equity paydown, and tax treatment all matter too, but paired with NOI and cap rate, it gives landlords a clear, personal read on a deal’s cash performance.
Next steps for landlords who want to put this to use:
- Run the calculation on one existing property using last year’s actual numbers, not projections, to see where it currently stands.
- Compare that number against the 8% to 12% range before using it to judge whether the deal is performing.
- Revisit the calculation whenever financing changes, a mortgage is refinanced, a large repair hits, or rent is renewed at a new rate.