Property investment: yield, cash flow and the real costs

Moneysmart's property guidance starts where most buyers do: houses and units seem easier to understand than many other types of investments. The appeal is real, and the pros on its list are the familiar ones — rental income while the property is tenanted, a capital gain if the value has risen by the time you sell, a physical asset you can see and touch, less volatility than shares, and no specialised knowledge needed to get started. Then comes the turn: it may seem more straightforward, but there are pitfalls to be aware of.

Start with what the purchase actually is: one large asset, in one suburb, usually bought with borrowed money — often most of your investable wealth in a single line. Moneysmart's cons list names the two structural problems politely. The investment is illiquid — hard to turn back into cash in a hurry — or as the list puts it, you can't sell off a bedroom if you need to access some cash. And it's concentrated — all your money in one market — which is why the same guidance says to invest in more than just property, so your portfolio is diversified and a single market can't sink it.

Then there's the toll gate at each end. High entry and exit costs make Moneysmart's cons list in their own right — stamp duty, legal fees and real estate agent's fees — and the full stack beside this paragraph is longer than most first-time landlords expect. None of those costs grow the investment; they're the price of the door. They're also why property punishes short holding periods: the tolls are paid whether you hold for two years or twenty, and a quick exit gives the asset no time to earn them back.

The number in the ad is gross rental yield — a full year's rent divided by the property's price, shown as a percentage. It's the biggest honest-looking number available, which is why listings lead with it: it counts every dollar of rent and not one dollar of cost. The number that matters is net rental yield — the same year's rent with the ownership costs taken out before dividing: rates, insurance, management fees, repairs and maintenance, every line of the owning stack above, none of which the tenant pays for you.

Vacancy is the wedge between the two that nobody prices in. Moneysmart's warning is blunt: don't rely on rental income to cover the mortgage — there may be times when your property is empty. A vacant week removes the rent and removes nothing else; the rates, the insurance and the loan repayment all arrive on schedule. That's why the same guidance tells buyers weighing up a suburb to look for higher rental yield and low vacancy rates together — a fat yield in a suburb where properties sit empty is a number about a tenant you don't have.

Moneysmart's homework list for a property you're considering is really a yield audit. Compare the income you expect with the outgoing expenses. If there's a shortfall, decide whether you can cover it long-term. And separately, work out whether you could cover all the expenses short-term if you had no tenants for a while. Answer those three and you've moved from the ad's number to your number: what's left after costs, and how many rent-free weeks you could survive.

Gearing just means the property was bought with borrowed money, and the cash flow it produces has two shapes with names. Positively geared: the rent covers the loan repayments and the running costs, and the property pays you an income — on which, Moneysmart notes, you may pay tax. Negatively geared: the rent doesn't cover them, and the property costs you money every month you own it. That second shape is the very first con on Moneysmart's list — rental income may not cover your mortgage payments and other expenses — because it's the shape many landlords are actually living in.

The tax system takes a close interest in both shapes, and this page deliberately doesn't. The rules moved in the 2026 Federal Budget — the application of both negative gearing and capital gains tax changed — so the current treatment belongs behind a link, not baked into a page that would quietly go stale. What is durable is Moneysmart's cash-flow point: you may be able to claim deductions on expenses, but you still have to pay them up front. Moneysmart's investment property guidance carries the tax detail and the current rules. One more shape from the same page: many people buy investment property with interest-only loans, and the interest-only period ends — repayments then step up to cover the amount borrowed plus the interest. Interest-only loans covers that cliff.

And gearing is still gearing, whatever the asset. Moneysmart's borrowing-to-invest guidance notes that borrowing gives you access to more money and lets you buy bigger investments — such as property — then delivers the other half: bigger returns when markets go up, larger losses when markets fall, and the more you borrow, the more you can lose. Back on the property page, Moneysmart's own worked example makes the shape concrete: Simon and Tiana budget a $1,416 monthly shortfall on a $550,000 unit — rent in, loan repayment and running costs out — and plan to cover it from salary, with an emergency fund behind them for stretches without tenants. That's a negatively geared property done honestly: a planned monthly loss, funded from other income, in exchange for hoped-for growth.

Every risk on Moneysmart's cons list is one the ad never mentions. Interest rates: a rise means higher repayments and lower disposable income — and the rent doesn't move just because your repayments did, so the widening gap is yours to fund. Vacancy: there may be times when you cover all the costs yourself because there's no tenant. Loss of value: if the property's value goes down, you could end up owing more than the property is worth — a geared loss, magnified exactly the way borrowing magnifies everything.

Concentration makes each of those risks heavier. A share portfolio can carry one bad stock in a good year; a single investment property is one asset, on one street, in one market, so a bad year for the suburb is a bad year for everything you have — the single-market risk Moneysmart's diversification warning is about. And the exit is slow and expensive at exactly the moments it matters most: a sale takes weeks at best, costs agent's fees, advertising and legal fees, and a sale forced by cash-flow pressure happens on the market's timetable, not yours — often into the same soft market that created the pressure.

The last risk walks up and shakes your hand. Moneysmart warns about property investment advice from groups of service providers — developers, accountants, lawyers and mortgage brokers recommending each other's services — and about property investment seminars that promise to make you a fortune and use high-pressure sales tactics to rush big decisions. A useful filter follows from everything above: anyone selling you a property will quote the gross yield. The questions that protect you — net yield, vacancy, the weekly shortfall, the exit costs — are precisely the ones the pitch skips.