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How to Calculate Cash-on-Cash Return
Manesh Jayawardhana
CIO & Co-founder
A property yields 4.8% unleveraged. With a mortgage, the same property produces a 13.3% cash-on-cash return. Nothing about the building changed — the denominator got smaller.
That’s not a trick, and it’s not free. Understanding exactly what cash-on-cash includes, and what it deliberately leaves out, is what stops the number from being misleading in either direction.
What the metric measures
cash-on-cash = annual pre-tax cash flow ÷ total cash invested
Both terms need care.
Cash invested is everything you actually put in: deposit, closing costs, legal fees, and any work done before the asset produced income. Not the purchase price — the cash that left your account.
Annual pre-tax cash flow is income after operating expenses and after debt service. Not net operating income, which is calculated before financing.
With 9,600 of annual cash flow on 72,000 invested, that’s 13.3%.
What it excludes is as important. No appreciation. No principal repayment, even though that’s building equity. No tax. It’s deliberately a cash-flow measure — it answers “what is this position paying me this year”, not “what will this investment be worth”.
Why people get stuck here
- Confusing it with cap rate. Cap rate measures the asset, unleveraged, and compares properties. Cash-on-cash measures your position, including the loan.
- Forgetting costs of acquisition. Excluding closing costs and initial works overstates the return from the start.
- Reading leverage as skill. A high figure driven by cheap debt is a financing outcome, not an operating one.
- Ignoring the reverse. Leverage amplifies losses exactly as directly as it amplifies gains.
What a careful calculation looks like
Both leveraged and unleveraged
Compute the return with and without the loan. The unleveraged figure tells you about the asset; the difference tells you what borrowing is contributing.
Realistic operating costs
Vacancy, maintenance, management, insurance and periodic capital expenditure. A calculation with no vacancy allowance and no maintenance line is a projection of a perfect year.
Year one, not forever
Cash-on-cash is an annual snapshot. Rents change, rates reset, and a fixed-rate period ending can move the number sharply.
| Metric | Includes Debt? | Answers |
|---|---|---|
| Cap rate | No | How good is the asset? |
| Cash-on-cash | Yes | What is my position paying? |
| IRR | Yes, plus time | What’s the return over a holding period? |
Common mistakes to avoid
- Using net operating income instead of cash flow after debt service.
- Excluding closing costs from cash invested, which inflates the return from day one.
- Assuming full occupancy every year.
- Treating a high leveraged return as low risk because the percentage looks good.
- Comparing a leveraged cash-on-cash figure against someone else’s unleveraged cap rate.
How to do it with Cash-on-Cash Return Calculator
The Cash-on-Cash Return Calculator shows the leveraged and unleveraged figures side by side.
- Add up all the cash you actually put in — deposit, closing costs, initial works.
- Use pre-tax cash flow after debt service, with realistic vacancy and maintenance allowances.
- Read both figures; the gap is what borrowing contributes.
- Re-run it with a higher interest rate to see how much of the return depends on current financing costs.
Other property and investment calculators are in the tools directory.
Frequently asked questions
How is this different from cap rate?
Cap rate is unleveraged and describes the asset, which makes it useful for comparing properties. Cash-on-cash includes your financing and describes your position, which makes it useful for comparing investments you could actually make.
Should appreciation be included?
Not here. Cash-on-cash is a cash-flow measure by design. If you want appreciation and principal repayment in the picture, you need an internal rate of return over a defined holding period.
Why does leverage make the number look so good?
Because the denominator shrinks faster than the numerator when borrowing costs less than the asset yields. That’s real — and it works identically in reverse when the asset underperforms the loan rate.
Final thought
Always compute the unleveraged figure alongside. If the deal only works with debt, you haven’t found a good asset — you’ve found a cheap loan, and loans reprice.