Cash-on-cash return answers a narrow, practical question: for every dollar of cash put into a property, how many cents come back as cash in a year?
Unlike cap rate, which ignores financing, cash-on-cash return is built around it. The same property can show very different cash-on-cash returns depending on the loan, the down payment and the upfront costs. That’s what makes it useful — and what makes it easy to misread.
The formula
Annual pre-tax cash flow is net operating income minus a full year of debt service (principal and interest). If you’ve worked through monthly rental cash flow, it’s that number times twelve.
Total cash invested is every dollar that left the investor’s pocket to acquire the property and make it rentable. That usually includes:
- The down payment
- Closing costs (lender fees, title, recording, prepaid items)
- Upfront repairs or renovation paid in cash
- Any loan points paid at closing
It does not include the loan amount. Borrowed money isn’t the investor’s cash — that’s the whole point of the metric.
A worked example
$300,000 rental with 25% down
The property produces $23,400 per year in net operating income. It’s financed with a $225,000 loan at 7.25% for 30 years.
| Cash invested | Amount |
|---|---|
| Down payment (25%) | $75,000 |
| Closing costs | $9,000 |
| Initial repairs | $6,000 |
| Total cash invested | $90,000 |
| Annual cash flow | Amount |
|---|---|
| Net operating income | $23,400 |
| Debt service ($1,535/mo × 12) | −$18,419 |
| Pre-tax cash flow | $4,981 |
Cash-on-cash return = $4,981 ÷ $90,000 = 5.53%
Hypothetical numbers for illustration.
For comparison, this property’s cap rate (NOI ÷ price) is 7.80%.
How financing changes the result
Because the formula puts cash invested in the denominator, anything that changes the down payment or the loan payment changes cash-on-cash return. Running the same property three ways shows the effect:
| Scenario | Cash invested | Annual cash flow | Cash-on-cash |
|---|---|---|---|
| All cash | $315,000 | $23,400 | 7.43% |
| 25% down | $90,000 | $4,981 | 5.53% |
| 20% down | $75,000 | $3,753 | 5.00% |
With an all-cash purchase, there’s no debt service, so cash flow equals NOI and cash-on-cash return lands just below the cap rate (closing costs and repairs add to the denominator).
With financing, the result depends on how the loan’s cost compares to the property’s income. At 7.25%, a year of payments costs about 8.19% of the loan balance — more than the property’s 7.80% yield on price. Each borrowed dollar costs more than it earns, so in this example the leveraged scenarios show a lower cash-on-cash return than the all-cash purchase, and a smaller down payment pushes it lower still.
When the cost of borrowing is below the property’s yield, the reverse happens and leverage pushes cash-on-cash return up. This relationship is often called positive or negative leverage, and it’s one of the main reasons cash-on-cash return is worth running at more than one down payment and interest rate.
Why the denominator deserves attention
Because cash invested sits in the denominator, small amounts of cash can produce eye-catching percentages. A property bought with very little cash down might show a cash-on-cash return far above anything an all-cash buyer would see — even if the monthly cash flow is only a few dollars. A high percentage on a tiny base isn’t the same as a large dollar return, and it often comes with a thinner cushion if rent dips or an expense spikes.
That’s why it helps to look at the dollar figure (annual cash flow) right next to the percentage. The percentage describes efficiency; the dollar amount describes scale.
What cash-on-cash return leaves out
Cash-on-cash return is a one-year, cash-only measure. It intentionally ignores:
- Principal paydown. Each payment reduces the loan balance, building equity that isn’t counted as cash flow.
- Appreciation. Changes in property value don’t appear until a sale or refinance.
- Taxes. The figure is pre-tax. Depreciation and other deductions can make after-tax results look different.
- Time. It’s a snapshot of one year. Rents, expenses and the loan balance all change over a holding period.
Broader measures like total ROI or internal rate of return fold some of these in, at the cost of needing more assumptions.
Common mistakes
Leaving closing costs out of cash invested. It’s tempting to divide by the down payment alone, but that overstates the return. Every dollar spent to acquire the property belongs in the denominator.
Using NOI instead of cash flow. NOI is before debt service. Dividing NOI by cash invested on a financed property gives a number that looks much higher than reality.
Comparing across different time frames. Cash-on-cash is annual. A figure based on one strong month multiplied by twelve won’t reflect vacancy and irregular expenses.
Forgetting about reserves. Some investors also count cash set aside as reserves at purchase. Whether to include it is a judgment call — the important thing is to be consistent across the properties being compared.
Cash-on-cash vs. cap rate
The two are easy to confuse because both are percentages built on NOI. The difference is the denominator and the treatment of debt:
- Cap rate = NOI ÷ property value. No financing.
- Cash-on-cash = (NOI − debt service) ÷ cash invested. Financing included.
Cap rate is the property’s yield on its price. Cash-on-cash is the investor’s yield on their cash. Seeing both side by side shows how much of the result comes from the property and how much from the financing structure.
The takeaway
Cash-on-cash return divides one year of pre-tax cash flow by the total cash it took to acquire the property. It’s a direct, easy-to-explain measure of how hard invested cash is working — and because it’s so sensitive to the loan and upfront costs, it’s most useful when run under several financing scenarios rather than one.