A buyer’s headline offer is not the amount you take home. Once capital gains tax, transaction structure, working capital adjustments, employee obligations and professional costs are accounted for, the difference can be substantial. This business sale tax guide is designed to help Australian business owners identify the tax decisions that need to be made before a buyer is at the table, not after the contract is signed.
Tax should not drive every sale decision. The right buyer, certainty of completion, confidentiality and a workable transition still matter. But tax planning can materially change your net outcome, particularly where small business CGT concessions are available. The earlier you assess your position, the more options you retain.
Business sale tax guide: start before the sale process
The most expensive tax mistake is leaving the review until due diligence is underway. By then, the legal structure, asset ownership, buyer preferences and proposed completion date may already be set. Changing course can delay the deal, weaken your negotiating position or create tax outcomes that could have been managed with earlier planning.
Start with a clear map of what is actually being sold. Is the buyer acquiring shares in your company, the business assets held by the company, units in a trust, or a combination of assets and goodwill? Who owns the trading assets, intellectual property, premises, vehicles and equipment? These questions sound basic, but owner groups often discover late in the process that valuable assets sit in different entities or are held personally.
Your accountant and transaction adviser should model the estimated after-tax result under the most realistic sale structures. This is not simply a calculation of the sale price less CGT. It should consider debt repayment, retained earnings, shareholder loans, transaction costs, employee entitlements, GST treatment and the path by which funds move from a company or trust to the people who ultimately own the business.
Share sale versus asset sale
A share sale and an asset sale can produce very different tax results for both parties. That is why buyers and sellers often begin negotiations with competing preferences.
In a share sale, the buyer acquires the shares in the company that operates the business. The company remains intact, including its contracts, liabilities, tax history and assets. Sellers may prefer this approach because the capital gain generally arises at shareholder level, where an individual may access the 50 per cent CGT discount and, if eligible, small business CGT concessions.
Buyers may prefer an asset sale. They can choose the assets and goodwill they acquire, avoid taking on historical company liabilities and may obtain tax deductions for certain purchased assets over time. In an asset sale, however, the company may pay tax on gains from selling its assets. If sale proceeds are then distributed to owners, a further layer of tax analysis is needed.
Neither structure is automatically better. A buyer may pay more for the certainty and risk protection of an asset deal. A seller may accept an asset deal if the commercial terms compensate for the tax cost. The critical point is to understand the net position before you agree on price. A $5 million offer under one structure is not necessarily equivalent to a $5 million offer under another.
Purchase price allocation also deserves careful attention. The contract may allocate value across goodwill, plant and equipment, trading stock, intellectual property, customer contracts, property and restraint payments. Each category can have a different tax treatment. An allocation should reflect commercial reality and be supported by appropriate valuation work, not merely designed to make the headline terms look attractive.
Small business CGT concessions can change the result
For eligible owners, Australia’s small business CGT concessions can be among the most valuable elements of sale planning. They are technical rules with strict conditions, so they should be reviewed well before a sale campaign begins.
Broadly, you may need to satisfy either the aggregated turnover test or the maximum net asset value test, along with the active asset test and other conditions that depend on the entity and ownership structure. Associated entities, affiliates, family groups and connected companies can all affect eligibility.
The principal concessions include:
- the 15-year exemption, which may allow a full exemption in specific circumstances, including where an owner is 55 or older and the sale is connected with retirement;
- the 50 per cent active asset reduction, which can reduce a qualifying capital gain after other applicable reductions;
- the retirement exemption, which may shelter a lifetime amount of qualifying gains, subject to conditions and superannuation requirements for owners under 55; and
- the rollover concession, which can defer a qualifying gain where a replacement active asset is acquired within the required period.
These concessions are not a box-ticking exercise. The order in which they are applied matters. So do the ownership records, trust distributions, shareholder arrangements and the history of the asset being sold. A business that has grown through restructures, acquisitions or changes in ownership deserves a detailed review rather than an assumption that concessions will apply.
If you expect to sell within the next 12 months, ask for this review now. A transaction-ready tax file should document entity ownership, asset ownership, cost bases, prior restructures, loans between entities and the likely basis for concession eligibility. It gives your advisers a stronger platform and prevents rushed analysis under buyer deadlines.
GST, stock and employee obligations
The sale of a business can be GST-free as the sale of a going concern, but only if the relevant requirements are met. Generally, the buyer must be registered or required to be registered for GST, the parties must agree in writing that the supply is of a going concern, and the seller must provide everything necessary for the continued operation of the enterprise.
This requires more than a statement in the contract. If key premises, licences, operating assets or agreements are excluded, GST-free treatment may be at risk. The treatment of commercial premises and leases should be reviewed early, especially where the business operates from property owned by a related entity.
Trading stock, work in progress, deposits, deferred revenue and employee entitlements also affect the money available at completion. They may be handled through a completion accounts mechanism, a working capital target or a separate adjustment. These are commercial provisions, but they influence the tax model and should not be treated as an afterthought.
Timing, earn-outs and the completion date
When a sale completes can affect the tax year in which a gain is recognised. That may influence your cash flow, marginal tax position, superannuation planning and the sequencing of other transactions. It can also affect eligibility where a concession depends on age, retirement or the status of an asset at a particular time.
Earn-outs add another layer. A portion of the price may be contingent on future revenue, profit, customer retention or project delivery. Earn-outs can bridge a valuation gap, but they shift risk back to the seller and need precise drafting. You need to understand how the contingent payments will be taxed, what operating control you retain after completion, and whether the performance target can be manipulated by changes in buyer policy.
Vendor finance deserves the same discipline. It may help secure a deal, but it leaves you exposed to credit risk and can delay access to your sale proceeds. The after-tax result is only useful if the consideration is actually collected.
Build a tax workstream into your exit plan
A well-run sale process treats tax as one workstream alongside valuation, sale readiness, buyer targeting, due diligence and contract negotiation. It is not a final compliance task handed to the accountant after the commercial terms are settled.
Begin by commissioning an independent view of business value and likely buyer expectations. Then have your tax adviser model realistic sale scenarios, including a share sale, an asset sale and any property or related-entity components. Identify the documents and evidence required to support cost bases and concession eligibility. Finally, ensure the heads of agreement and sale agreement reflect the agreed tax structure, GST treatment and allocation of consideration.
This article is general information, not personal tax or legal advice. Tax rules, thresholds and interpretation can change, and the right approach depends on your ownership structure, trading history and transaction terms. A coordinated review by your tax adviser, lawyer and experienced sale adviser is the prudent course.
The sale process will move faster than most owners expect once a credible buyer appears. Put the tax decisions on the table while you still have time to shape the deal, protect your position and choose an exit that reflects the value you have spent years creating.
