Buying Your First Investment Property in Perth: The Numbers That Actually Matter in 2026

Investing

Perth has been the strongest capital city market in the country, and it has been the strongest home-building market. If you’re a homeowner sitting on equity and wondering whether to make the jump to investing, 2026 is a genuinely complicated year to do it — not a bad one, but one where the details matter more than usual.

Here’s what to actually look at.

1. Your equity is probably your deposit

You likely don’t need cash. If your home has grown in value, you can usually access equity up to 80% of its value, minus what you still owe.

Home worth $850,000, loan of $400,000: - 80% of $850,000 = $680,000 - Minus the $400,000 loan = $280,000 in accessible equity

That’s a deposit and costs for a solid investment property, without touching your savings.

Structure this properly from day one. Use a separate loan split for the investment portion — don’t just top up your existing home loan and blend the two. Mixing deductible and non-deductible debt in one account creates a mess that your accountant will charge you to untangle every year, and can cost you deductions. Get this right at the start; it’s very painful to fix later.

2. Borrowing power is the real constraint

Not the deposit. The serviceability test.

Lenders assess you at your rate plus 3 percentage points, and with the cash rate now at 4.35% after three hikes this year, that assessment rate is high. Most lenders will count only a portion of your expected rental income — commonly around 70–80% — to allow for vacancy and costs.

You’ll also still be carrying your own mortgage. Read How Much Can I Borrow in 2026 before you fall in love with a property.

3. The tax rules are changing — and it’s not settled

You cannot plan a purchase in 2026 without understanding this.

A Bill introduced to Parliament on 28 May 2026 proposes that from 1 July 2027, negative gearing on established residential property be restricted — losses could no longer be offset against your salary, only against residential rental income. New builds would be exempt, keeping both negative gearing and the 50% CGT discount.

It is not law yet. But if it passes as drafted, the tax system will actively favour new construction — which, in the strongest home-building market in Australia, is not a small thing.

Read the full breakdown before you commit to anything, and talk to your accountant. We do the loan; the tax structure is their call.

4. Cash flow, honestly

Run the actual numbers. Not the optimistic ones.

Income: weekly rent × 52, then subtract 2–4 weeks for vacancy. Don’t assume 52 weeks of rent. You won’t get it.

Costs: loan repayments, council rates, water rates, strata (if applicable), landlord insurance, property management (typically 7–10% plus letting fees), maintenance, and a repairs buffer. Budget for a hot water system dying, because one will.

Then: what’s the shortfall each month, and can you fund it out of your own income — at today’s rates, and at rates 1% higher?

If the answer to that last question is no, you cannot afford the property. Interest rates have gone up three times this year. Plan for the possibility they go up again.

5. Don’t buy the tax break. Buy the asset.

A negatively geared property that loses money is only a good idea if the capital growth exceeds the losses. The tax deduction reduces your loss — it doesn’t turn it into a gain.

Location, land value, rental demand, and price still matter more than tax treatment. A poor property with excellent tax treatment is still a poor property. And with the rules in flux, buying primarily for the tax treatment is a particularly bad idea right now.

Frequently asked questions

How much deposit do I need for an investment property? Typically 20% to avoid LMI, though you can borrow up to 90% with LMI. Most investors use equity in their home rather than cash.

Should I go interest-only? It improves cash flow and, on established rules, maximises deductible interest. But you’re not reducing the debt, and repayments jump sharply when the interest-only period ends. It suits some strategies and wrecks others. Model it before you choose.

Can I use my first home buyer concessions on an investment? No. The WA concessions and the 5% Deposit Scheme are for owner-occupiers only.

Is now a good time to buy in Perth? That question has no honest general answer, and anyone who gives you a confident one is selling something. It depends on your cash flow, your timeframe, and your ability to hold through a rate cycle. What we can tell you precisely is what you can borrow and what it will cost you.

Thinking about your first investment property? We’ll tell you what your equity can do, what you can borrow, and how to structure the loan so your accountant thanks you instead of billing you.

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