Investing
Cash-on-Cash Return: Measuring the Performance of Your Own Investment
Cash-on-cash return measures annual cash flow against the cash you actually put in. With one hypothetical €200,000 purchase, this guide shows why a 4.8% net operating yield can become a 1.33% or 0.67% cash-on-cash return once financing is included.
Published · 3 min read
By Costa de Oro · Real-estate agency · Marbella & Costa del Sol
What cash-on-cash return measures
Formula: cash-on-cash return = annual cash flow ÷ initial cash invested × 100. It focuses on your own money rather than on the property's price, which makes it useful for comparing a financed purchase with other uses of the same savings.
State the conventions you use. In this guide, cash flow is before income tax, shown both before and after an annual replacement reserve. Appreciation and mortgage principal paydown are excluded: neither is spendable rental income in the year.
Defining initial cash
The example is hypothetical and not a lender quote or market data. A €200,000 property is bought with an illustrative €140,000 mortgage.
- Equity towards the price: €60,000
- Transaction and setup costs: €25,000 (illustrative budget)
- Working reserve held in cash: €5,000
- Initial cash invested: €90,000
The leveraged calculation
Net operating income is €9,600 after one vacant month and €3,600 of operating costs. Assumed annual debt service of €8,400 (principal and interest) leaves €1,200 of before-income-tax cash flow.
Cash-on-cash before the replacement reserve: €1,200 ÷ €90,000 = 1.33%. After a €600 annual reserve: €600 ÷ €90,000 = 0.67%. The €5,000 working reserve is counted once, as part of initial cash, not also as an annual expense.
Comparing with an all-cash purchase
Without a mortgage, initial cash is €200,000 + €25,000 + €5,000 = €230,000 and there is no debt service. Cash flow is €9,600 before reserve and €9,000 after it.
Unleveraged cash-on-cash: €9,600 ÷ €230,000 = 4.17% before reserve and €9,000 ÷ €230,000 = 3.91% after. In this example, borrowing lowers the percentage because debt service absorbs most of the operating income. Principal repayment builds equity, but it still reduces the cash you receive.
Sensitivity and limits
Small changes move a thin cash-on-cash return sharply. With operating costs fixed, one extra vacant month reduces cash flow by €1,200, taking the leveraged case to €0 before reserve (0%) and −€600 after it (−0.67%). A €100 monthly rise in debt service has the same effect. Both together give −€1,200 and −€1,800.
The measure ignores timing within the year, taxes, transaction costs on exit and future value. It is one input, not a verdict on whether to buy.
A comparison checklist
Use the same conventions for every option you compare, and keep them written next to the result.
Rental permission, community rules and tax position need separate professional checks before the numbers are relied on.
- Initial cash defined identically: equity, purchase costs, working reserve
- Cash flow stated before income tax, before and after reserve
- Debt service taken from an actual lender schedule
- Appreciation and principal paydown excluded
- Stress cases for vacancy and higher debt service
- Unleveraged comparison calculated on the same basis
Common questions
Is cash-on-cash return the same as ROI?
Not necessarily. ROI is used loosely and may include appreciation or equity gains. Cash-on-cash return here counts only annual cash flow against initial cash.
Why can leverage lower cash-on-cash return?
When debt service takes most of the operating income, the cash left is small relative to the equity invested, as in this example.
Should the working reserve be in initial cash?
Include it if the cash is committed to the property from the start. Count it once, as initial cash, and not again as an annual cost.
