Rental ROI Calculator

Cash-on-cash return is the most relevant profitability metric for leveraged property investment. It measures the annual cash income generated as a percentage of the actual cash you put into the deal, your down payment, purchase costs and any renovation spend. Because you borrow the remainder, leverage amplifies your return on invested cash relative to the underlying yield. A property with a 5 percent net yield financed with a 25 percent deposit can deliver a cash-on-cash return of 8 to 12 percent depending on mortgage terms. This is why cash-on-cash return, not yield, is the metric serious property investors use to compare deals.

Enter your total property purchase price, down payment, purchase costs, expected monthly rent, annual operating expenses and your monthly mortgage payment. The calculator derives annual cash flow by subtracting all costs including the mortgage from rental income, then divides annualised cash flow by total cash invested. A positive cash-on-cash return means the property pays for itself and generates surplus income. A negative figure means you are subsidising the property each month.

Before purchasing a leveraged investment property, to determine whether the rental income after all costs and mortgage payments delivers an acceptable return on your cash deposit.
When comparing two properties at different price points and mortgage terms, to identify which delivers the stronger return on your actual cash investment.
When evaluating the impact of a larger or smaller deposit on your cash-on-cash return, a larger deposit reduces leverage but typically improves cash flow.
For portfolio landlords assessing whether each property is working hard enough relative to the equity tied up in it, identifying candidates for refinancing or sale.
When interest rates change and your mortgage payment increases on a variable rate loan, to quickly calculate the impact on your cash-on-cash return.

Cash-on-Cash Return: Annual pre-tax cash flow divided by total cash invested. The standard return metric for leveraged property investment, analogous to dividend yield in equities.

Leverage: Using borrowed money to increase the potential return on your cash investment. In property, leverage allows you to control an asset worth much more than your equity, amplifying both gains and losses.

Total Cash Invested: The sum of your down payment, purchase transaction costs, and any capital spent on renovation before letting. This is the denominator in the cash-on-cash calculation.

Equity: The portion of the property value you own outright, the difference between the current market value and the outstanding mortgage balance. Equity grows through appreciation and mortgage repayment.

A frequent mistake is calculating cash-on-cash return using only the down payment as the denominator and ignoring purchase costs such as stamp duty, legal fees and surveys. This overstates the return. Always include all acquisition costs in your total cash invested figure. A second error is using optimistic rental income and ignoring void periods, which inflates cash flow. Use a conservative occupancy assumption, typically 46 to 48 weeks of rent per year, to stress-test the return against realistic conditions.

Combine cash-on-cash return analysis with the Rental Property Calculator for a complete picture of yield and income performance. The Property Appreciation Calculator can project your total return including capital growth, which often exceeds the income return over long holding periods. Use the Mortgage Calculator to model different loan-to-value ratios and their effect on cash flow and return.

Frequently Asked Questions

Total property return combines rental yield and capital appreciation. Annual total return equals net rental income plus annual capital gain, divided by the equity invested (your down payment plus any capital added). For example, a property worth €300,000 with €200,000 mortgage that generates €12,000 net annual rent and appreciates by €9,000 delivers a total return of €21,000 on €100,000 of equity, a 21 percent return. Leverage amplifies both gains and losses: property financed with debt produces a much higher return on equity than the same property's cap rate suggests, because appreciation accrues on the full value while your equity is only a fraction of it.

Property and equities have delivered comparable long-run total returns in most developed markets, approximately 7 to 10 percent annually including both income and appreciation. However, the risk profiles differ significantly. Property is illiquid, concentrated in a single asset or small number of assets, and requires active management. Equities are instantly liquid and can be diversified across hundreds of companies at minimal cost. Property returns are amplified by leverage in ways that equities typically are not for retail investors, which can make real property returns appear higher but involves corresponding additional risk. The choice depends more on your skills, tax position and time availability than on a clear superiority of one asset class over the other.

The most commonly omitted costs are: void periods (typically 4 to 8 weeks of lost rent annually), capital expenditure reserves (typically 1 to 2 percent of property value annually for maintenance and periodic major works), management fees (8 to 15 percent of rent if using an agent), insurance, ground rent and service charges for leasehold properties, and the cost of tenant turnover including cleaning, minor repairs and re-letting fees. When all these costs are included, gross yields of 6 to 7 percent often translate to net yields of 3.5 to 4.5 percent, significantly changing the investment case compared to the gross yield headline figure.

Rising interest rates affect property investors in two ways simultaneously: the cost of mortgage borrowing increases, compressing cash flow and cash-on-cash returns, while property values often decline as higher financing costs reduce buyer demand and purchasing power. A buy-to-let investor on a variable rate mortgage faces the double impact of higher monthly costs and lower property value at the same time. This is why stress-testing investment returns at mortgage rates 2 to 3 percent higher than current levels is essential before committing to a leveraged property investment, the numbers need to work at higher rates, not just at current rates.

The decision to sell an investment property should be driven by investment fundamentals rather than emotional attachment or market timing. Key triggers for selling include: the net yield has fallen below what is achievable elsewhere due to appreciation without equivalent rent growth, the property requires significant capital expenditure that would reduce returns for several years, the local market is showing signs of structural decline in rental demand, or the capital could be redeployed into a higher-returning investment after accounting for transaction costs and capital gains tax. The transaction costs of selling, typically 3 to 6 percent of value, mean the return from reinvesting the proceeds must clearly exceed the return from holding to justify a sale.