Cap rate vs cash-on-cash return: what each one actually tells you
Cap rate is the property's unleveraged yield: NOI divided by price, the same for every buyer. Cash-on-cash is your leveraged cash return: annual cash flow divided by the cash you invested, different for every buyer depending on financing. Cap rate helps you compare properties. Cash-on-cash helps you compare deals.
These two metrics get confused constantly, and the confusion is expensive. An investor who picks properties on cash-on-cash alone can end up overpaying for a mediocre building just because the financing was favorable. An investor who only looks at cap rate might pass on a deal that would produce excellent returns with the right loan. They answer different questions, and you need both.
The core difference
| Cap rate | Cash-on-cash | |
|---|---|---|
| Formula | NOI ÷ Purchase price | Annual cash flow ÷ Cash invested |
| Includes financing? | No | Yes |
| Same for every buyer? | Yes | No |
| What it measures | The property's earning power | Your return on deployed cash |
| Best for | Comparing properties, pricing markets | Evaluating YOUR deal with YOUR financing |
Cap rate strips out financing to isolate the property. Cash-on-cash layers financing back in to show what you actually earn. Neither is better. They do different jobs.
Same property, two lenses
A $400,000 rental in Tampa producing $28,000 NOI and $2,400 gross rent per month. Two buyers, two financing strategies, one cap rate:
| Buyer A (25% down) | Buyer B (all cash) | |
|---|---|---|
| Purchase price | $400,000 | $400,000 |
| NOI | $28,000 | $28,000 |
| Cap rate | 7.0% | 7.0% |
| Cash invested | $112,000 | $400,000 |
| Annual debt service | $23,900 | $0 |
| Annual cash flow | $4,100 | $28,000 |
| Cash-on-cash | 3.7% | 7.0% |
Same property, same cap rate. Completely different cash-on-cash. Buyer B earns 7% on their cash. Buyer A earns 3.7% because their 7% mortgage rate is working against them. The cap rate told them the property was identical. The cash-on-cash told them their deals are not.
When cap rate leads
Use cap rate as your primary metric when you are:
- Comparing properties. You want to know which building earns more relative to its price, independent of how you finance it.
- Pricing a market. Memphis runs 7% to 9% cap rates, Austin runs 4% to 5%. Cap rate tells you what you are paying per dollar of income.
- Evaluating a cash purchase. Without financing, cap rate and cash-on-cash are the same number.
- Screening quickly. Cap rate needs two inputs (NOI and price). Cash-on-cash needs the full financing stack.
When cash-on-cash leads
Use cash-on-cash as your primary metric when you are:
- Deciding between loan options. A 6.5% rate versus a 7.5% rate on the same property creates different CoC returns. Cap rate does not show this.
- Comparing against other investments.Your alternative is a 4.5% Treasury or a 10% S&P 500 average. Cash-on-cash is the apples-to-apples number.
- Checking if leverage helps or hurts. When your mortgage rate exceeds the cap rate (negative leverage), CoC on a financed deal is lower than CoC on an all-cash deal. Only cash-on-cash reveals this.
- Measuring your annual cash return. Cap rate tells you what the building earns. CoC tells you what your bank account sees.
The negative leverage trap
This is where the confusion gets expensive. In 2025 to 2026, with mortgage rates around 7%, many deals exhibit negative leverage: the cap rate is lower than the borrowing cost. A 6% cap property financed at 7% means every dollar you borrow actually drags down your return. The cap rate looks fine. The cash-on-cash tells the real story.
This does not mean the deal is bad. Loan paydown and appreciation can still make it a strong total return. But if you are buying for cash flow, cash-on-cash is the metric that keeps you honest.
Use both, in this order
- Step 1: Cap rate to screen. Filter your market for properties earning above a minimum threshold relative to price.
- Step 2: Cash-on-cash to decide. Model your specific financing on the shortlist and see what each deal actually returns on your cash.
- Step 3: Total ROI to confirm. Layer in paydown and appreciation for the full picture.
Frequently asked questions
Is cap rate or cash-on-cash more important?
Neither is universally more important. Cap rate compares properties. Cash-on-cash compares deals. Use cap rate to find good properties, then cash-on-cash to evaluate whether your specific financing makes the deal work.
Can cap rate and cash-on-cash be the same?
Yes, on an all-cash purchase with no financing. Without debt service, your annual cash flow equals the NOI, and the denominators are the same, so cap rate and cash-on-cash converge to the same number.
Why is my cash-on-cash lower than the cap rate?
Because your mortgage rate is higher than the cap rate (negative leverage). Each dollar of debt costs more than the property earns per dollar of value, which drags your cash-on-cash below what the cap rate suggests.
Which metric do lenders look at?
Lenders primarily look at DSCR (debt service coverage ratio), not cap rate or cash-on-cash. But cap rate influences their appraised value, and cash-on-cash influences your reserves analysis.
Does cap rate include property taxes?
Yes. Cap rate uses NOI, which is gross income minus all operating expenses including property taxes and insurance. It excludes only debt service.