What is the difference between gross yield and net yield?
Gross yield is your annual rental income divided by the property's purchase price, shown as a percentage before any costs are taken out. Net yield subtracts the property's running costs — council rates, strata, insurance, maintenance and property management fees — before dividing by the purchase price, giving a more accurate picture of the actual return. A property advertised at a 5% gross yield might only return 3.5% net once those costs are accounted for.
The Fuller Picture
Gross yield is the number most listings advertise because it's simple and looks impressive — take the weekly rent, multiply by 52, and divide by the purchase price. It gives buyers a quick way to compare properties at a glance, but it ignores every cost involved in actually holding the property. Two properties with an identical gross yield can produce very different net returns depending on their age, strata structure and land value.
Net yield is where the real comparison happens, and it's also where estimates diverge, because 'costs' can be defined loosely or thoroughly. A conservative net yield calculation includes council rates, water rates, landlord insurance, property management fees (commonly 6-8% of rent in the Illawarra), routine maintenance and, for units and townhouses, strata levies. Some calculations also factor in land tax and likely vacancy periods between tenants, which pulls the net figure down further. Buyers comparing two properties should make sure they're using the same cost assumptions for both, otherwise the comparison is meaningless.
There's no government scheme that standardises how yield is calculated, but state-level settings still influence the net figure. Land tax thresholds and rates are set by NSW Revenue and can materially affect an investment property's after-cost return, particularly once a buyer holds more than one investment property. A depreciation schedule, prepared by a quantity surveyor, doesn't change the yield calculation itself but does affect the after-tax cash flow an investor actually experiences, which is often the number that matters more than yield alone.
What This Means for Your Purchase
When comparing properties, ask for net yield, not gross, or work it out yourself from the listing details. A property advertised as a standout at 5.8% gross can become an average performer once strata levies of around $4,000 a year and a property manager's cut are taken out — the property next door with a lower gross figure but no strata fees might actually perform better net.
Yield alone shouldn't drive a purchase decision, but it should be one of the numbers you check before making an offer, particularly if the property is being bought partly or wholly for its rental return rather than for capital growth. A property with a strong net yield but weak growth prospects, or vice versa, requires buyers to be clear about which outcome they actually want.
The financial implication sits mostly in ongoing cash flow. A property that looks affordable on gross yield can quietly become cash-flow negative once net costs are factored in, which matters for serviceability if you're relying on rental income to support the loan. Lenders typically only count a portion of rental income, often 70-80%, toward serviceability, so it's worth running the net numbers before you get attached to a property.
How This Shows Up in the Illawarra
In the Illawarra, gross yields on houses in areas like Warrawong, Berkeley and parts of Dapto tend to sit higher than the more expensive coastal suburbs, partly because purchase prices are lower relative to achievable rent. Coastal and escarpment suburbs like Thirroul, Austinmer and Bulli generally show lower gross yields but have historically leaned more on capital growth than rental return, so the yield comparison matters differently depending on which suburb band you're looking at.
Strata is the biggest swing factor in the Illawarra unit and townhouse market. Older unit blocks in Wollongong CBD or Port Kembla can carry high gross yields on paper, but ageing buildings often mean higher strata levies and a greater chance of a special levy for building works, which erodes net yield more than in a newer complex. Buyers weighing a house against a unit for investment purposes should run both scenarios through net yield rather than comparing gross figures across property types.
Frequently Asked Questions
Is a higher yield always a better investment?
Not necessarily. A high-yield property in a low-growth area can leave you with strong cash flow but little increase in value over time, while a lower-yield property in a growth corridor might build more wealth overall. The right balance depends on your financial goals and how long you plan to hold the property.
Why do two agents quote different yield figures for the same property?
It usually comes down to which costs, if any, are included in the calculation, or whether the rent figure used is the advertised rent or a conservative estimate. Always ask whether a quoted yield is gross or net, and what costs were subtracted.
Does yield matter if I'm buying to live in, not to rent out?
Yield isn't directly relevant if you're buying an owner-occupied home, but it's worth understanding if you might rent the property out later, for example if you upgrade homes and keep this one as an investment down the track.
When in the buying process should I calculate net yield?
Ideally before you make an offer, using the rental appraisal, strata report (if applicable) and council rates notice. Relying on an agent's advertised yield without checking these documents can mean you're working from an optimistic number.
Can a weak net yield be used in price negotiations?
Yes. If a building and strata report reveal higher-than-typical levies or an upcoming special levy, that's a legitimate reason to revisit your offer, since it directly affects the return you can expect from the property.
Does a buyers agent help with yield calculations?
A buyers agent can pull the actual costs, such as strata, rates and comparable rents, for a specific property rather than relying on generic figures, and can flag properties where the advertised yield doesn't hold up once real costs are applied.
If you're weighing up an investment property in the Illawarra and want the real numbers before you commit, we're happy to talk it through. Get in touch and we can help you look past the advertised yield to what the property will actually return.
