Rental Yield on a New Build Abroad: How to Calculate It

Gross rental yield is annual rent divided by purchase price; net yield subtracts running costs and uses your total cost as the base. For a new build abroad, include service charges, management, maintenance, insurance, vacancy and tax, and remember an off-plan unit earns nothing until handover.

Gross and net: the formulas

Gross yield = annual rent ÷ purchase price × 100. If a unit costs 250,000 and lets for 15,000 a year, gross yield is 6 percent. That is the figure on most brochures.

Net yield = (annual rent − annual costs) ÷ total acquisition cost × 100. If costs of 4,500 a year apply and you also paid 25,000 in taxes and fees on top of the price, net yield is 10,500 ÷ 275,000, about 3.8 percent. The gap between 6 and 3.8 percent is the reason to calculate your own figure.

The expenses to include

Off Plan Properties’ rental yield calculator asks for purchase price, expected monthly rent and annual expenses, and its page offers typical ranges: service charges of 2 to 4 percent of property value, management at 8 to 12 percent of rental income, maintenance of 1 to 2 percent of value, insurance of 0.2 to 0.5 percent and vacancy of one to two months a year. Those are the page’s own indicative ranges, not universal rules, so replace them with quotes for your building. Our hidden costs list covers the acquisition side.

Item	Typical question	Counts in net yield
Service charge	Estimated annual amount from the developer	Yes
Management fee	Percentage of rent or fixed	Yes
Maintenance reserve	Annual allowance	Yes
Insurance	Building and contents	Yes
Vacancy	Months empty per year	Yes
Local income tax on rent	Rate for non-residents	Yes
Letting platform fees	Percentage of bookings	Yes
Acquisition taxes and fees	Paid once	In the denominator

Key takeaway: quote yield on total cost, not on headline price, and show it net. A brochure that shows only gross yield on price is telling half the story.

Brochure yields: a reality check

Catalogue pages quote ranges such as 4 to 7 percent for Spain, 3 to 6 percent for Portugal and 5 to 8 percent for Thailand, as stated on the Off Plan Properties country pages for Spain, Portugal and Thailand. None is accompanied by a stated source or method in the content we could read. Treat them as marketing indications. Check actual rents for comparable units on local letting sites, and ask the developer to name the basis of any projection, including whether it is gross, furnished, long-term or holiday letting.

Long-term versus short-term letting

Holiday lets can produce higher gross income but with more volatility, higher management cost and more regulation. Many cities and communities restrict short stays or require a licence. Long-term lets tend to give steadier rent with lower management costs, but rent controls may apply in some countries. Choose a letting strategy before you buy, and check that the building and the municipality permit it. For country specifics, see our notes on Spain and Portugal.

Off-plan: the waiting period

An off-plan unit earns nothing during construction. Compute the return over the whole holding period, including the build. Example: you pay 250,000 over two years and then let at 15,000 a year. After two years of no income your total outlay is 250,000 plus costs, and income starts only then. Compared with a finished unit that rents from month three, the off-plan option has to deliver either a lower price or greater growth to compete. The comparison is explored in off-plan vs completed property abroad.

Tax on rental income

Non-residents may pay local income tax on rent, withholding at source or both, and then report the income at home with relief for foreign tax paid. Rates and rules differ. Do not assume tax is zero because a brochure mentions a favourable regime; ask for the rate that applies to a non-resident in your situation. A tax adviser who knows both countries can save you from double taxation and from missed filings.

Currency effects

If rent is paid in one currency and you spend in another, exchange moves change your real return. A 5 percent yield can become 3 percent in your own currency if the local currency weakens. Consider holding rent in a local account for local costs and bringing home only the surplus.

A five-step yield test

1. Gather the all-in acquisition cost from your lawyer.
2. Find three comparable rents from independent sources.
3. List every annual cost from written quotes.
4. Subtract a vacancy allowance appropriate to the area.
5. Compute net yield, then compare it with the brochure figure and with your alternatives.

If the numbers still work after this, the project passes. If it only works on the brochure’s assumptions, treat that as a warning. You can also see what the market offers in the listings and compare price against local rents.

Sources and caveats

Yields are estimates, not promises. This article is general information, not investment or tax advice. Verify rents, costs and taxes locally before you buy.

Sensitivity: how much can the answer move?

Run three scenarios rather than one. A base case uses your best estimate of rent and costs. A downside case cuts rent by ten percent, doubles vacancy and raises costs by a fifth. An upside case adds a little to rent. If the downside case still gives a return you can accept, the investment has room for error. If it leaves you with a near-zero or negative cash flow, the project depends on everything going right.

Add a currency test. Convert the annual net income into your home currency at today’s rate and at a rate ten percent weaker. For a buyer who intends to spend the income at home, the second figure is what matters.

Cash-on-cash return if you borrow

If you use a mortgage, yield on the full price is not the return on your own money. Cash-on-cash return divides annual net income after loan payments by the cash you actually invested, including deposits, fees and furnishing. Leverage can raise this figure when rents exceed interest costs, and cut it sharply when they do not. The mortgage calculator on Off Plan Properties can help you test monthly payments before you add them to your yield sheet, and our article on mortgages for non-residents explains why the loan you want may not be the loan you get.

Capital growth is not yield

Brochures often blend rental yield and expected price growth into a single attractive “return”. Keep them apart. Yield is income you can bank each year; growth is a forecast that you realise only if you sell at a higher price after costs. Selling costs, taxes on gains and the possibility of a fall all reduce it. If the case for a purchase relies mainly on growth, call it speculation and size it accordingly.