If you’ve been Googling this, you’ve probably heard someone at a barbecue swear it’s a legit way to save tens of thousands of dollars. A mate of a mate did it. Or their cousin. It sounds almost too neat to be true.

That’s because it is. Every state and territory revenue office in Australia has closed this loophole, and they closed it a long time ago. Buying your parents’ house for $1 doesn’t get you out of stamp duty — the relevant market value assessment for duty can still reflect what the property is genuinely worth, regardless of the nominal sale price.

This article walks through exactly why the $1 trick doesn’t work, how stamp duty valuations are actually calculated on family transfers, what it might genuinely cost you (in duty, capital gains tax, and a few things people forget entirely), and the legitimate ways families do transfer property to each other without falling into a compliance mess.

Summary

Every Australian state and territory calculates stamp duty (transfer duty) on the higher of the price paid or the property’s market value — not on the contract price you and your parents agree to. Selling a house for $1 doesn’t reduce this at all; the revenue office will still require a stamp duty valuation to establish what the property is genuinely worth, and duty is charged on that figure.

The main things to understand:

Family transfers are not automatically exempt. Genuine exemptions exist (spousal transfers, some deceased estate transfers, certain farming transfers) but a simple parent-to-child sale isn’t one of them in most states.
Nominal or “mates’ rates” sales still get valued at market price for stamp duty purposes, because these are treated as related-party or non-arm’s-length transactions.
Capital gains tax can apply to your parents, even though they’re “selling” for $1, because the ATO also substitutes market value in non-arm’s-length deals — unless the property is their main residence.
Other traps exist, including Centrelink deprivation rules if your parents are pensioners, and potential issues if creditors or a bankruptcy trustee later question the transfer.
A registered valuer’s report is usually the safest way to establish market value, protect everyone from underpayment penalties, and give your solicitor or accountant clean figures to work with.

If your family is genuinely trying to help a child into a home, there are legitimate paths — just not this one. Read on for what actually works.

Why a $1 Sale Doesn’t Avoid Stamp Duty Valuations

Here’s the concept that trips almost everyone up: stamp duty (called transfer duty in New South Wales, Queensland and Western Australia, and still commonly called stamp duty elsewhere) isn’t based on what you pay. It’s based on the property’s dutiable value.

Across every state and territory, the dutiable value is defined as whichever is greater: the price actually paid, or the property’s unencumbered market value. “Unencumbered” just means the value of the property free of any mortgage or debt sitting against it — what a willing buyer would genuinely pay a willing seller on the open market.

So if your parents’ house is worth $850,000 and you agree to buy it for $1, the revenue office doesn’t charge duty on $1. It charges duty on $850,000, exactly as if you’d paid full price.

Why “arm’s length” is the key phrase

Revenue offices use the term arm’s length to describe a transaction between two parties who are genuinely independent of each other — a stranger buying your house through a real estate agent, for example. In an arm’s length deal, the contract price is usually accepted as a reasonable proxy for market value, because neither party has a reason to under- or over-state it.

A sale between parent and child is, by definition, not arm’s length. You have a relationship, and there’s an obvious incentive to set an artificially low price. Because of this, related-party transactions — including sales between parents and children, siblings, or into a family trust — routinely trigger a requirement for an independent stamp duty valuation, regardless of what price is written on the contract.

This is one of the most common reasons families end up needing a stamp duty valuation: not because they’re doing anything wrong, but because the law requires proof of market value whenever the parties involved aren’t independent of each other.

How Stamp Duty Valuations Work on Family Property Transfers

If you go ahead with buying your parents’ house — for $1, for $100,000, or for any figure below what it’s genuinely worth — here’s roughly what happens.

You and your parents sign a contract (or, in some cases, a transfer document) setting out the price and terms.
The revenue office reviews the transaction. Because it’s between related parties, it’s flagged as non-arm’s length.
A market valuation is required. This can sometimes be an appraisal letter from a real estate agent for lower-value or straightforward cases, but for anything with real dollars at stake, a valuation prepared by a registered valuer is the more robust and defensible option — particularly if the figure is later questioned.
Duty is assessed on the valuation figure, not the contract price.
You pay the duty within the timeframe set by your state (commonly around three months of signing, though this varies).

A worked example

Say your parents’ Brisbane home is genuinely worth $700,000. You agree to “buy” it for $1 to help them out and save yourself some money.

The Queensland Revenue Office won’t assess transfer duty on $1. For a family residential transfer in Queensland, you’ll need evidence of market value that meets the Queensland Revenue Office’s requirements, and duty will be assessed using the property’s applicable dutiable value rather than simply the $1 contract price. Depending on thresholds and any concessions you may or may not qualify for, that’s still a five-figure duty bill, exactly as it would be if you’d bought the house from a stranger at auction.

The $1 price achieved nothing for stamp duty purposes. All it did was create an enormous gap between what you paid and what the property is worth — which brings its own separate problems (more on that below).

Does this differ by state?

The underlying “market value rule” for stamp duty valuations applies nationally in some form, but the detail — thresholds, rates, which exemptions exist, and how the valuation needs to be evidenced — varies by state and territory. If your parents’ property is in a particular state, it’s worth checking that state’s revenue office website (Revenue NSW, State Revenue Office Victoria, Queensland Revenue Office, RevenueSA, and so on) or speaking with a solicitor who works in that jurisdiction, because a rule that applies in Victoria won’t necessarily apply the same way in Western Australia.

The Capital Gains Tax Problem Nobody Mentions

Stamp duty is only half the story. The other half lands on your parents, not you — and it’s the part most people researching this topic haven’t thought about.

The Australian Taxation Office has its own version of the “market value rule” for capital gains tax (CGT). Under the CGT rules, when property is sold between related parties for less than market value (a non-arm’s-length transaction), the ATO can substitute the market value for the actual sale price when working out any capital gain.

In plain English: if your parents sell you their $700,000 house for $1, the ATO can still treat it as though they sold it for $700,000 when calculating whether they owe capital gains tax.

When this matters — and when it doesn’t

If the property is your parents’ main residence (the home they actually live in), the main residence exemption generally means no CGT applies regardless of the sale price, because the exemption is based on use, not price.
If it’s an investment property, a holiday house, or land that isn’t their home, CGT can absolutely apply, calculated on the market value — potentially leaving your parents with a real tax bill for a property they essentially gave away.

This is exactly the kind of detail that catches families out. Everyone focuses on the stamp duty side and assumes the parents are simply “gifting” the property with no consequence, when in reality it depends heavily on how the property has been used.

Other Things a $1 Sale Doesn’t Solve

Centrelink and pension impacts

If either parent receives an age pension or other Centrelink payments, selling an asset for well below its value can be treated as gifting for social security purposes. Centrelink applies deprivation rules that count the “gifted” portion (the difference between market value and what was actually paid) against your parents’ assets for up to five years, which can reduce or affect their pension entitlements.

Bankruptcy and creditor risk

If your parents (or you) later run into financial difficulty, a sale at well below market value can be unwound. Trustees in bankruptcy and creditors can challenge under-value transfers to family members made in the years before insolvency, on the basis that the transaction wasn’t commercially genuine. A $1 sale, on paper, looks exactly like what it is — a transfer designed to shift value out of one person’s name without proper consideration.

Family law exposure

If you or your parents are involved in, or heading toward, a family law property settlement, a transfer at a nominal price between related parties can be scrutinised by the Family Court as an attempt to move assets out of reach. This is a separate issue from stamp duty, but it’s one more reason nominal-value sales attract attention rather than avoid it.

So What Actually Reduces Stamp Duty on a Family Transfer?

There’s no way to sell a property to your child, or buy one from your parents, for less than market value and have duty assessed on the lower figure. But there are legitimate options worth discussing with a solicitor and accountant, depending on your situation and state:

Genuine exemptions, such as transfers between spouses or domestic partners (available in most, but not all, states), certain deceased estate transfers, or specific family farm transfer concessions.
First home buyer concessions or exemptions, if you’re buying at genuine market value and qualify as a first home buyer in your state — these reduce or remove duty on the purchase itself, separate from any family relationship.
Structuring the transaction properly, for example a genuine sale at full market value funded by a family loan or gift of the deposit, rather than a nominal sale price.
Estate planning, where the property passes to you through your parents’ will rather than during their lifetime — inheritances generally aren’t subject to stamp duty, though other considerations (like CGT on a later sale) still apply.

None of these are guaranteed to suit your situation, and the right approach genuinely depends on your state, your parents’ circumstances, and what you’re all trying to achieve. This is a conversation for a solicitor who handles property transfers, alongside an accountant for the tax side.

Where a Stamp Duty Valuation Fits In

Whatever price you and your parents ultimately agree — full market value, a discounted “mates’ rates” price, or a genuine gift — an independent valuation provides a defensible, evidence-based figure for the property’s market value, with similar valuation considerations also arising in property transfers involving an SMSF. That figure is what the revenue office will use to assess duty, what the ATO may use for CGT purposes, and what your solicitor will rely on when drafting the transfer documents.

Getting this number right matters. Underestimate it and you risk a reassessment, interest, and penalties down the track. Overestimate it and you (or your parents) pay more duty or tax than you need to. An independent valuation, rather than a guess or an old rates notice figure, is generally the safest starting point for these transactions.

Frequently Asked Questions

Can I really buy my parents’ house for $1 in any Australian state?

No. Every state and territory charges stamp duty on the higher of the price paid or the property’s market value, so a $1 sale price doesn’t reduce your duty bill in any jurisdiction.

Do I still need a valuation if we’re not using a real estate agent?

Usually, yes. In fact, transactions without an agent — including private family sales — are one of the main triggers for the revenue office requiring an independent valuation, precisely because there’s no arm’s length sale price to rely on.

Will my parents have to pay capital gains tax if they sell to me for $1?

It depends on whether the property is their main residence. If it is, the main residence exemption generally applies regardless of price. If it’s an investment property, CGT can be assessed on the market value even though only $1 changed hands.

Is gifting the house to me instead of selling it any better for stamp duty?

No. Gifts of property are also assessed for stamp duty on market value in most states, since there’s no arm’s length price at all — the whole value is treated as the “sale price”.

What’s the difference between an appraisal and a valuation for stamp duty purposes?

A real estate agent’s appraisal is an informal opinion of value and may be accepted for some lower-risk transactions. A valuation from a registered valuer is a formal, defensible report and is generally expected for related-party transfers, higher-value properties, or SMSF-related transactions.

Can Centrelink find out about a family property transfer?

Centrelink periodically reviews assets and can ask about property transfers, particularly around pension reviews. Under-value transfers to family are generally required to be disclosed and can be assessed under deprivation rules.

Conclusion

A $1 sale price doesn’t reduce stamp duty, because every Australian state assesses duty on market value, not the contract price, for family and related-party transfers. It can also trigger CGT for your parents and affect their pension. If you’re genuinely looking to transfer property within the family, get proper advice and an independent valuation before agreeing on a price.

If you or your parents are working through a property transfer and need a defensible market valuation for stamp duty purposes, SMSF Property Valuers can prepare an independent stamp duty valuation report to support your transaction and give your solicitor or accountant the figures they need. You can reach the team on +61 438 080 786 to discuss what’s involved for your situation.

Can I Buy My Parents’ House for $1 and Avoid Stamp Duty?