Capital gains tax often decides how much of your sale price you actually keep. Many owners discover this too late- after signing a contract. Small business CGT concessions exist to soften that blow, but only if you meet strict rules the ATO checks carefully.

This guide breaks down how capital gains tax applies to a business sale, walks through each of the four small business CGT concessions, and flags a major change coming from 1 July 2027. Gold Coast Business Brokers has guided sellers through this exact process for over two decades, working from offices on the Gold Coast, in Brisbane, and in Melbourne, across Queensland, New South Wales, and Victoria.

DISCLAIMER: This information is provided for educational and general informational purposes only and does not constitute financial advice. Gold Coast Business Brokers is not a financial adviser. Readers should seek independent advice from a qualified financial adviser before making any financial or investment decisions.

What Capital Gains Tax Actually Means for a Business Sale

When you sell a business, you usually create a capital gain. That gain equals your sale price minus your original cost base, adjusted for certain expenses. The ATO adds that gain to your assessable income for the year.

This surprises many sellers. A business sold for $2 million doesn’t hand you $2 million in your pocket. Tax comes first, and depending on your structure, that bill can run into hundreds of thousands, or millions, of dollars.

Two things reduce that bill before concessions even enter the picture. The standard CGT discount cuts your taxable gain by 50%, provided you held the asset for at least twelve months. Capital losses from other assets can also offset the gain, dollar for dollar.

None of this happens automatically in your favour. You need to calculate it correctly, and you need proper records to back every figure. Get the cost base wrong, and you either overpay tax or invite an ATO review.

Tax Doesn’t Set Your Sale Price — the Market Does

Here’s a distinction many sellers get wrong. Your capital gains tax bill has no bearing on what a buyer pays for your business.

A buyer weighs up what the business earns, how much risk it carries, and what similar businesses have sold for. That process lands on a figure. Your personal tax position doesn’t enter into it, because the buyer doesn’t pay your CGT. You do.

Some sellers work backwards from what they “need” — enough to cover CGT, clear a loan, and fund retirement — and treat that number as the asking price. Buyers don’t operate that way, and a price built on your liabilities rather than the business’s earning power tends to sit on the market far longer than it should.

This is exactly why the planning in this guide matters. You can’t change what a buyer will pay. You can change how much of that payment you keep, through the right structure and the right concessions, applied well before you sign anything.

Why Small Business CGT Concessions Exist

Parliament designed these concessions to help small business owners fund retirement without losing a huge share of decades of work to tax. Four separate concessions apply, and you can stack more than one, provided you meet each one’s specific conditions.

These concessions can wipe out a capital gain entirely in some cases. In others, they reduce it substantially. Either way, understanding which concessions apply to your situation before you sell matters enormously.

The Basic Eligibility Conditions You Must Meet First

Before you look at any individual concession, you need to clear the basic eligibility gate.

You need to satisfy one of two tests. The first is the small business entity test: your aggregated turnover must sit under $2 million. The second is the maximum net asset value test: your net CGT assets, combined with those of connected entities and affiliates, must stay under $6 million immediately before the sale.

Your asset also needs to pass the active asset test. Broadly, this means the asset must have been genuinely used in your business, not simply held as an investment. If you’ve owned the asset for 15 years or less, it needs to have been active for at least half that ownership period. Own it for longer than 15 years, and it needs 7.5 years of active use.

Depreciating assets don’t meet these basic conditions at all. That catches out plenty of sellers who assume every business asset automatically qualifies.

Basic Eligibility Checklist

• Confirm your aggregated turnover sits under $2 million, or
• Confirm your net CGT assets stay under $6 million before the sale
• Check the asset passes the active asset test for the required period
• Rule out depreciating assets from concession eligibility
• Include affiliates and connected entities in your turnover and asset calculations

The Four Small Business CGT Concessions Explained

Once you clear the basic conditions, four separate concessions become available. Each has its own extra rules on top of the basics.

The 15-Year Exemption

This concession disregards the entire capital gain. No tax applies at all. To qualify, you need to have owned the asset continuously for at least 15 years, and you need to be at least 55 and retiring, or permanently incapacitated.

This is the strongest concession available, and it takes priority over the others where you’re eligible. If you qualify for the 15-year exemption, you generally skip the other three entirely.

The 50% Active Asset Reduction

This concession halves your capital gain automatically, on top of the standard 50% CGT discount you may already have applied. It applies without you needing to choose it, unless you specifically opt out.

Combined with the general discount, a company or individual seller can sometimes reduce a capital gain to a quarter of its original size before any other concession even applies.

The Retirement Exemption

This concession lets you disregard capital gains up to a lifetime limit of $500,000. If you’re under 55, you must pay that disregarded amount into superannuation. If you’re 55 or older, the choice is yours.

The $500,000 limit sits separately from the broader CGT cap for super contributions, which currently sits at $1.865 million and rises by $5,000 increments most years. Amounts contributed under the retirement exemption count toward that broader cap, so the interaction between the two figures needs careful planning with your accountant.

The Small Business Rollover

This concession defers your capital gain rather than eliminating it. You get a two-year window, sometimes longer, to acquire a replacement asset or make capital improvements. If you don’t, the deferred gain becomes assessable again.

This suits owners restructuring or reinvesting proceeds into a new venture, rather than owners planning to exit the workforce entirely.

A Major Change Is Coming From 1 July 2027

The rules around CGT and small business concessions aren’t static, and a significant shift takes effect from 1 July 2027. Understanding it now matters if your exit timeline sits anywhere near that date.

From that date, the flat 50% general CGT discount changes for many assets. It gets replaced by a discount tied to indexation, alongside a new minimum tax rate of 30% applying to certain assessable gains. Importantly, this change applies prospectively. Any increase in your business’s value that accrued before 1 July 2027 keeps the existing 50% discount, with no minimum tax rate attached to that earlier portion.

The four small business CGT concessions themselves remain in place. One threshold actually widens in the seller’s favour: the 50% active asset reduction extends to businesses with aggregated turnover under $10 million, up from the current $2 million cap.

Owners planning to sell around this transition should talk to their accountant early. The timing of a sale, not just the structure, could materially change your after-tax outcome.

Key Dates and Figures Checklist

• Standard CGT discount: 50%, provided the asset was held for at least 12 months
• Small business entity turnover test: currently under $2 million
• Maximum net asset value test: under $6 million
• Retirement exemption lifetime cap: $500,000
• Broader CGT contribution cap: $1.865 million, indexed upward periodically
• New minimum tax rate and indexed discount: applies from 1 July 2027
• Active asset reduction turnover threshold: expands to $10 million from 1 July 2027

Asset Sale or Share Sale? The Structure Changes Your Tax Position

Whether you sell business assets or company shares changes which concessions apply and how much tax you ultimately pay. This decision deserves a proper conversation with your accountant well before you go to market, not after a buyer makes an offer.

An asset sale transfers specific items, such as goodwill, equipment, and stock, while the company entity stays with you. A share sale transfers the whole entity, hidden liabilities included. Buyers often prefer asset sales because they avoid inheriting unknown risks tied to the company’s history.

Where a company structure exists, concessions applying to the company don’t automatically flow through to shareholders in a share sale. Additional conditions, including the 90% test for company shares, need separate consideration. Getting this wrong can mean a concession you thought applied simply doesn’t.

Common Mistakes That Cost Sellers Real Money

A handful of mistakes appear again and again in business sales, and each one is avoidable with early advice.

Sellers frequently assume every asset automatically qualifies as active, only to find depreciating assets or investment-style holdings fall outside the definition entirely. Others miscalculate their aggregated turnover by forgetting to include affiliates and connected entities, pushing them over the $2 million threshold without realising it.

Some sellers leave concession planning until after signing a contract, when the sale structure is already locked in and options have narrowed. Others assume a share sale and an asset sale produce identical tax outcomes, when the difference can run into tens of thousands, if not millions, of dollars.

Some sellers price their business around what they need to net after tax and other liabilities, rather than what the market will actually pay — a mismatch that shows up fast once buyers start comparing the asking price to comparable sales.

Every one of these mistakes gets fixed with early, coordinated advice from an accountant who understands small business CGT concessions specifically, not general tax law in isolation.

Why This Isn’t a Job for Spreadsheets Alone

Small business CGT concessions genuinely deliver enormous value to sellers who structure their exit properly. They also punish sellers who assume eligibility without checking the fine print.

Larger transactions sometimes bring in a corporate advisory or M&A firm to manage this complexity. That level of engagement suits multi-entity structures, cross-border buyers, or highly technical earn-out arrangements. Most small and mid-sized business sales don’t need that scale of involvement, and the fees attached to it can quietly erode the very tax savings you’re trying to protect.

A business broker working alongside your accountant and solicitor delivers the same coordination a sale genuinely needs. Your accountant confirms which concessions apply and models the tax outcome. Your solicitor drafts a contract that reflects the agreed structure. Your broker keeps the negotiation focused on the total deal, not on tax, because tax hits every buyer and seller differently depending on their own structure — it’s rarely a productive topic at the negotiating table. All of this happens without the overhead a full M&A engagement adds for a business well under that scale.

Preparing for a CGT-Efficient Sale

Getting this right starts well before you list. The earlier you begin, the more options remain available to you.

CGT Preparation Checklist

• Confirm your aggregated turnover and net asset position against ATO thresholds
• Document how long each business asset has been actively used
• Model the tax outcome of an asset sale against a share sale with your accountant
• Check whether the retirement exemption or rollover suits your circumstances better
• Factor the 1 July 2027 changes into your exit timeline if you’re within two years of selling
• Confirm affiliate and connected entity turnover is included in every calculation
• Keep documented valuations and cost base records for every relevant asset

Where Gold Coast Business Brokers Fits Into This Process

Capital gains tax planning works best as part of a coordinated sale strategy, not a separate task handled in isolation after the fact. Gold Coast Business Brokers routinely brings solicitors and accountants into deal structuring conversations early, because a poorly timed or poorly structured sale can quietly erase tens of thousands, sometimes millions, of dollars in avoidable tax.

We’ve connected thousands of business owners with buyers across Queensland, New South Wales, and Victoria, and every sale starts with the same disciplined groundwork: clean financials, a defensible valuation, and a tax-aware structure decision made early enough to actually matter.

If you’re weighing an exit in the next few years, particularly with the 2027 changes on the horizon, the smartest move is a confidential conversation now, while every option still sits on the table.

Request a confidential market appraisal and find out how CGT planning could shape the outcome of your business sale.