Tax Structuring for Australian Business Sales: Small Business CGT Concessions Explained

If you've spent 25 years building a business and someone offers you $3 million to buy it, you might feel like the hard work is done. But between that headline number and what ends up in your bank account, there's a gap that surprises almost every seller who hasn't planned ahead. That gap is tax — and in Australia, it's possible to dramatically reduce it if you understand the rules and prepare early enough.

Sellers often focus on the headline purchase price. But in a business sale, the number that actually matters is what you keep after tax - and for many Australian owners, the difference comes down to tax structuring done months (or years) before the deal.

Australia's small business CGT concessions can reduce or eliminate capital gains tax on the sale of a business, but only if you pass a set of technical tests and the deal is documented correctly. Miss the tests (or structure the deal poorly) and you can easily hand over a six or seven figure amount to the ATO that you could have legally avoided.

This guide explains how tax structuring works in practice for Australian business sales, what the small business CGT concessions are, the eligibility tests that matter most, and the deal terms that can change your outcome. It's written for business owners (not tax lawyers), but it's detailed enough to help you have a sharper conversation with your accountant and M&A adviser.

Why tax structuring is part of deal strategy (not an afterthought)

In an SME sale, tax isn't just a compliance step after signing. It influences:

• What you sell: shares vs assets, and which assets sit where (trading entity vs holding entity).
• How you get paid: upfront cash, earn-outs, vendor finance, deferred consideration.
• What the buyer wants: buyers often prefer ass

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  et deals; sellers often prefer share deals. Tax outcomes can widen that gap.
• How the contract is drafted: allocation of price to assets, working capital adjustments, completion accounts vs locked box, treatment of retained cash/debt.

When tax structuring is left late, you end up negotiating with a gun to your head. When it's done early, it becomes a lever: you can trade terms (price, risk, timing) with a clear view of your after-tax position.

Asset sale vs share sale: the first tax fork in the road

Most private company sales in Australia are structured one of two ways:

1) Share sale (you sell the company shares)

• Seller view: often cleaner for sellers because you sell one asset (shares) and (in many cases) access CGT concessions on the gain.
• Buyer view: buyers inherit historical liabilities inside the company (tax, legal, employee, warranty claims). They will demand tighter warranties/indemnities and may discount price.

2) Asset sale (the company sells the business assets)

• Seller view: can trigger multiple tax outcomes (CGT on goodwill, ordinary income on trading stock, balancing adjustments on plant, GST considerations). Extracting sale proceeds from the company can also create a second layer of tax.
• Buyer view: preferred where possible: they pick the assets they want, reset depreciation bases, and avoid most historical liabilities.

There's no universal "best" structure. The right answer depends on what you're selling, your entity (company/trust/partnership/sole trader), and whether you can access concessions. A good adviser will model both options and then use deal terms to bridge gaps.

A quick primer: capital gains and the small business CGT concessions

When you sell a business (or business assets), you may make a capital gain. For individuals and trusts, the general CGT discount can reduce that gain by 50% if the asset was held for at least 12 months. But the small business CGT concessions can go further - potentially to zero.

The four small business CGT concessions are:

• 15-year exemption (best outcome, strict conditions)
• 50% active asset reduction (additional 50% reduction)
• Retirement exemption (exclude up to $500k of gain per individual over a lifetime)
• Small business rollover (defer gain by rolling into a replacement active asset)

In practice, sellers often use a combination (for example: CGT discount + active asset reduction + retirement exemption). But the concessions only apply if you satisfy the core eligibility tests.

The eligibility tests that matter (and where owners get caught)

To access the small business CGT concessions, you generally need to meet:

1) The turnover or net asset test

• You're a small business entity (aggregated turnover under $2m), or
• You satisfy the maximum net asset value test (net assets of you + connected entities/affiliates under $6m).

Common trap: owners forget the "connected entities and affiliates" aggregation. If you have multiple businesses, family entities, or investment structures, the turnover/net asset tests can be affected. This is one reason why getting the structure map right early matters.

2) The active asset test

Broadly, the asset must be an active asset of the business for at least:

• Half the ownership period (if held ≤ 15 years), or
• 7.5 years (if held > 15 years).

Assets used in the course of carrying on a business (including goodwill) are typically active assets. But some assets are specifically excluded or problematic - for example, assets mainly used to derive passive rent or interest. Home-based businesses face additional complexity here — the ATO's 2026 guidance sets specific rules around how the active asset test applies when the business premises is your main residence.

Common trap: excess cash, investment portfolios, or non-business real estate sitting in the trading entity can contaminate the net asset test and complicate active asset analysis. Cleaning this up early is often one of the highest ROI moves you can make.

3) Ownership structure tests (for companies and trusts)

If you're selling shares in a company (or units in a trust), you typically need:

• A significant individual (someone with at least a 20% interest), and
• The relevant seller/beneficiary to be a CGT concession stakeholder.

Common trap: discretionary trusts can be flexible for tax planning, but they can create complexity around who the concession stakeholders are. This is solvable - but you want it addressed before you're negotiating heads of terms.

The four concessions explained (practically)

1) 15-year exemption

If you've owned the business (or shares) for at least 15 years and meet additional criteria, you may be able to disregard the entire gain. Usually this is relevant when:

• the business has been held long-term, and
• the individual seller is at least 55 and retiring (or is permanently incapacitated).

When it applies, it's a game-changer. It's also the concession most likely to be missed if records and ownership history aren't clean.

2) 50% active asset reduction

This concession reduces the remaining gain by 50% (after any capital losses). It can stack with the 50% CGT discount (for individuals/trusts), which means the gain can shrink quickly.

3) Retirement exemption

You can choose to disregard up to $500,000 of capital gains per individual over a lifetime (subject to conditions). If you're under 55, the exempt amount generally needs to be paid into a complying superannuation fund or RSA.

In practice, the retirement exemption is often used to mop up remaining gain after discounts and reductions. It's especially valuable for owners who are not eligible for the 15-year exemption.

4) Small business rollover

This lets you defer a gain by acquiring a replacement active asset within a set period. It's useful when you're selling one business to buy another (or invest into active business assets), but it's less relevant for owners exiting entirely.

A worked example (why structure changes what you keep)

Imagine an owner sells a business for $6.0m. Their cost base in the shares is $0.5m (because profits have been retained and the business has grown). The capital gain is $5.5m.

• If they don't qualify for small business CGT concessions, the after-tax result depends on marginal rates, capital losses, and whether the general CGT discount applies - but it can easily mean a seven-figure tax bill.
• If they qualify, the gain may be reduced via the 50% CGT discount (individual/trust), then reduced again via the 50% active asset reduction, and then potentially further reduced via the retirement exemption (subject to caps and stakeholder rules).

The point isn't the exact number (your accountant will model it). The point is that the same deal price can produce very different outcomes depending on eligibility, structure, and documentation.

Deal terms that can break (or improve) your CGT outcome

Even if you qualify for concessions, transaction mechanics can change timing and character of gains. The main areas to watch:

Earn-outs and deferred consideration

If part of the price is contingent on future performance, you need to understand how it's treated for CGT purposes and whether it affects eligibility. Earn-outs can also create practical issues: you may have a tax liability before you receive all the cash.

If your deal includes an earn-out, read our guide: Why earn-outs fail in Australia.

Vendor finance

Vendor finance changes the risk profile (and sometimes the timing of payments). Your tax position may still crystallise on completion even though cash is received over time, so you must plan liquidity.

Related: Vendor finance in Australian business sales.

Working capital adjustments and completion accounts

Working capital mechanisms change the final purchase price. That can affect your capital proceeds and the calculated capital gain. You want the contract to be precise about the adjustment methodology to avoid disputes and unexpected outcomes.

Related: Working capital adjustments in a business sale.

Allocation of purchase price (asset sales)

In an asset sale, the allocation of price between goodwill, plant/equipment, stock, and other assets can change the tax character of proceeds. Buyers may push for allocations that suit them (e.g., higher depreciable assets). Sellers want to understand the after-tax effect before agreeing to a schedule.

Extraction of surplus cash and "debt free / cash free" terms

Many deals are priced on a debt-free, cash-free basis with a normalised working capital target. If your company has accumulated cash (or shareholder loans), you need to plan how those amounts are treated and extracted, and how that interacts with concessions and net asset tests.

Tax structuring moves that are high leverage (done early)

Without giving personalised advice, these are common areas advisers review 6-18 months before sale:

• Group structure and asset placement: separating non-core/passive assets from the trading entity where appropriate.
• Cleaning up shareholder loans: documenting, repaying, or restructuring to avoid surprises in due diligence and completion accounts.
• Trust deed and distribution history: ensuring the trust structure supports concession stakeholder requirements.
• Record keeping: maintaining evidence for active asset use, valuations, and historical ownership changes.
• Pre-sale restructure: in some cases, a restructure can improve commercial outcomes - but it must be handled carefully due to ATO integrity rules and timing.

To put the concessions in plain terms: a café owner in Adelaide sells the business for $950,000. She has owned it through a company for 12 years, is over 55, and has never claimed the retirement exemption. The capital gain is $620,000. Without concessions, she might owe over $180,000 in tax. With the 15-year exemption (if she qualifies) or the retirement exemption applied correctly, her tax on that gain could be zero — provided the deal was structured and documented correctly before she signed. This is not aggressive tax minimisation. It's using what the law specifically provides for small business owners. The difference is knowing about it before the contract is signed.

A practical checklist before you sign heads of terms

• Confirm whether you're likely to meet the $2m turnover test or the $6m net asset test (including connected entities/affiliates).
• Map the active assets vs passive assets in the structure (cash, investments, property, related-party loans).
• Decide your preferred deal structure (share vs asset) and model after-tax outcomes under both.
• Model scenarios for earn-outs/deferred payments so you're not left with a tax bill before cash arrives.
• Align the contract mechanics: allocation schedules, working capital methodology, and treatment of cash/debt.
• Ensure your adviser team (accountant + M&A adviser + lawyer) are collaborating early, not sequentially.

FAQ: common questions we hear from sellers

Do I pay GST on the sale of my business?

Often, a sale of a going concern can be structured so GST is not payable - but this depends on conditions being met and the contract being drafted correctly. This is a classic example of why you want tax and legal review before signing heads of terms, not after.

What if the business property is owned separately?

Many owners hold property in a separate entity (or personally) and lease it to the operating business. That can be a smart risk decision, but it creates a separate tax and deal negotiation workstream: will the property be sold, retained, or leased long-term? The answer can affect valuation, buyer appetite, and your CGT position.

How early should I start planning?

Ideally 12-24 months before sale. That gives you time to clean up the balance sheet, document key positions, and (where appropriate) implement changes without being forced into last-minute restructures that buyers (and the ATO) will scrutinise.

How Succession Advisory helps

We work with Australian business owners to prepare for sale, run sale processes, and negotiate the deal - with a clear line of sight to value and after-tax outcomes. Tax advice itself must come from your tax adviser, but we can help you:

• structure the sale process so you have leverage and optionality,
• pressure-test the buyer's proposed structure and commercial terms, and
• coordinate with your accountant and lawyer so the deal documentation matches the intended outcome.

If you're considering a sale in the next 6-24 months, start with our valuation and readiness assessment: Business valuation assessment.