Short answer
Yes. For tax, the ATO says a valuation is usually judged by the process followed rather than who did it, though it treats a qualified professional’s report as more reliable. It warns that doing your own valuation risks reporting your tax incorrectly, with possible interest and penalties. An owner is also not independent. Self-valuation suits private planning best.
Where your own figure works, and where it struggles
Valuing your own business is a useful exercise: it makes you look hard at what the business earns and how much it depends on you. Whether your figure is enough depends on who else has to rely on it.
| What the figure is for | Your own figure | Why |
|---|---|---|
| Planning, or deciding whether to sell one day | Usually fine | Only you rely on it. |
| Setting an asking price | A starting point | A buyer will test it, so the reasoning matters as much as the number. |
| Tax, including the 1 July 2027 CGT changes | Risky | The ATO may review it, and the figure stays your responsibility. |
| Selling to family or a business partner, or moving the business between your own entities | Hard to support alone | You sit on one side of the deal, so others may question your figure. |
| A family law property settlement | Handled separately | We refer these matters to our dedicated family law practice, Family Law Valuations. |
If the figure is for tax
The ATO's guide to market valuation for tax purposes says the responsibility for a replicable and defensible figure stays with you, even when you pay a professional. It warns that doing your own valuation risks reporting your tax incorrectly, with possible interest and penalties.
The guide expects whoever values the asset to be knowledgeable and experienced, to stay objective, and to support the figure with credible evidence and a recognised method. Objectivity is the hard part for an owner. You know the business best, but you also have the most riding on the number, and the ATO expects a valuation report to declare the valuer's independence and any conflicts of interest.
For the 1 July 2027 CGT changes, a figure as at 30 June 2027 can only be worked out once your records to that date exist, whoever prepares it. Market value is not the only basis either: some taxpayers may be able to use an apportioning method instead once one is made, and companies are treated differently. Whether you need a valuation at all is a question for your tax adviser.
If you value it yourself, show your working
Write your figure up so that someone else could follow it and reach the same answer. Drawing on what the ATO looks for in a valuation report, your working should cover:
- Why you are valuing the business, and the date the figure is at.
- Exactly what is being valued: the whole business, your shares, your units in a trust or goodwill alone.
- The method you chose and why it suits the business, with a second method as a cross-check where possible.
- The records and evidence you used, and every assumption, with your reasons.
- Only information that was known or reasonably foreseeable at the valuation date.
Problems the ATO says it often sees in reviews include the wrong method, unsupported assumptions and adjustments, and thin documentation. Two traps are especially easy for owners: counting profit without a fair wage for their own work, and borrowing a rule-of-thumb multiple from a different kind of business. See how to value a business for the main methods.
When an independent figure is worth having
When the figure will go into a tax return, a sale to someone close to you or a shareholder exit, an independent valuation gives you reasoning from someone with nothing riding on the result. No valuation rules out an ATO review, but a documented one is easier to explain.
A full valuation report from Independent Business Valuation sets out what is valued, the date, the method, the evidence and the assumptions. Every judgement is made, and the report signed, by a suitably qualified business valuer at Valuo. We charge one fixed fee of $999 + GST for a full valuation report on one business or ownership interest with annual turnover under $10 million. The fixed fee applies once we confirm the interest, purpose, structure and records fit the fixed-fee scope. Anything outside it is quoted in writing before we start. Fixed fee, confirmed in writing before we start. No hourly billing and no surprises.
Read the full guide
- Small business valuation for owner-run businessesIndependent Business Valuation values owner-operated businesses across Australia: the café, the trade business, the clinic, the online store. We...
- How to value a business: the eight steps a valuer takesA business is worth what its future earnings are worth to a reasonable buyer, after allowing for risk. Getting from your accounts to that number...
- Which valuation method fits your businessAlmost every private business valuation in Australia rests on a handful of methods. The skill is in choosing the one that fits, setting its inputs...
- Business valuation for CGT purposesCGT is usually worked out from real numbers: what you paid and what you received. When there is no price, or the price was set between related...
- How a valuation worksThe steps, what we analyse and what the report contains.
- What a valuation costsOne fixed fee for turnover under $10 million, confirmed in writing before we start.
Related questions
Does the ATO check valuations owners prepare themselves?
It can. The ATO says it may review the market value of an asset relating to your tax affairs, and that a review is more likely where the value is high or the method is contentious. It then expects more evidence and explanation. That applies whether you or a professional prepared the figure.
Can I use an online valuation calculator for tax?
A typical calculator applies an average to one or two numbers, so it cannot show the evidence, method and assumptions behind your figure. The ATO expects a valuation used for tax to be supported by evidence, replicable and well documented, which a calculator result on its own does not provide. Independent Business Valuation can explain the difference on a call.
More short answers
- Who can value a business for tax purposes?There is no formal admissions board for business valuers in Australia. The ATO’s guidance says a valuation’s acceptability usually depends on the...
- What is the difference between a valuation and a calculation engagement?In a full valuation, the valuer decides what work is needed and reaches a conclusion of value. In a calculation engagement, the valuer and client...
- What is the apportionment method for 30 June 2027?It is a formula the Government has proposed, under a power in the tax law, to split a capital gain at 1 July 2027 instead of using a market...
- Is a 30 June 2027 valuation needed for every business?No. The 30 June 2027 rule applies to assets held by Australian resident individuals and trusts with at least one eligible beneficiary, not...
Sources
- ATO, Market valuation for tax purposesato.gov.au
- Treasury Laws Amendment (Tax Reform No. 1) Act 2026 (No. 49, 2026)legislation.gov.au
- ATO, Tax reform: boosting home ownership, reforming negative gearing and capital gains taxato.gov.au
- Treasurer, Consultation on next tranche of tax reform legislation (4 August 2026)ministers.treasury.gov.au
Updated
General information only, not advice about your circumstances. A valuation depends on the facts of the business and the purpose it is for.