Selling a Business: Five Mistakes Owners Don’t See Coming | Quinn M&A

Selling a business is one of the most significant financial events in an owner’s life — yet most owners begin preparing far too late, and with far too narrow a focus. The result is a rushed, undervalued, or derailed transaction that leaves money on the table. Here are five of the most commonly overlooked considerations, and why addressing them early is the difference between a good outcome and a great one. For the full pre-sale review — the nine workstreams a buyer’s adviser will test before naming a price — start with our guide to preparing your business for sale.

1. Tax Planning Is Not a Post-Sale Task — It Must Begin Years Before

One of the most costly assumptions an Australian business owner can make is believing that tax planning happens after the deal is done. In reality, the most significant tax outcomes are shaped by decisions made two to three years before a sale.

Australia’s small business Capital Gains Tax (CGT) concessions — governed by Division 152 of the Income Tax Assessment Act 1997 — are among the most powerful exit planning tools available to eligible owners. Used correctly, they can reduce or eliminate the CGT payable on the sale of an active business asset. The four concessions are the 15-year exemption, the 50% active asset reduction, the retirement exemption, and the small business rollover.

But eligibility is not automatic, and the rules are strict. Businesses must meet either an aggregated turnover threshold of less than $2 million or a net asset value test of less than $6 million. The asset being sold must qualify as an active asset. And critically, the concessions must be applied in a specific order mandated by the ATO.

What advisors see repeatedly is that opportunities are lost not because a business was ineligible, but because documentation was incomplete, structures had not been reviewed, or planning simply started too close to the sale date. A café owner who sells in late June, for example, may miss superannuation contribution strategies and expense pre-payment opportunities that a sale in early July would have accommodated.

2. Owner Dependency Is the Single Biggest Valuation Risk Most Owners Ignore

Ask most business owners how their company is valued, and they will point to revenue and profitability. What they often fail to account for is how heavily buyer-applied discounts can erode that number when a business is operationally dependent on its founder.

A key person is any individual whose absence would result in material financial, reputational, or operational harm to the business. In founder-led SMEs — which describes the majority of Australian private businesses — that person is typically the owner themselves. They hold the client relationships. They make the decisions. They carry the institutional knowledge. None of that is documented, and none of it transfers automatically with the business.

Buyers and their advisors assess this risk formally. Valuation discounts for key person dependency typically range from 10% to 25% of assessed value — and in cases where the owner is the sole revenue driver, the discount can be far steeper. In the most extreme situations, buyers walk away entirely.

The structural fix is not complicated, but it does take time. It requires building a second tier of leadership, documenting processes, establishing contracts directly with clients rather than through personal relationships, and progressively reducing the owner’s operational role. Businesses that undertake this work before going to market consistently achieve better outcomes — both in terms of price and in the smoothness of the transaction itself.

3. Messy Financials Kill Deals — Even in Profitable Businesses

There is a significant difference between a business that generates strong cash flows and a business whose financial records clearly demonstrate those cash flows to a buyer’s due diligence team. Many owners conflate the two.

In owner-operated businesses, it is common for personal expenses to run through the company, for the owner’s remuneration to be structurally inconsistent, or for revenue recognition to be informal. These practices are not inherently problematic while the business is operating — but they create significant friction in a sale process. Buyers need to understand the true, normalised earnings of the business: what a new owner could reasonably expect to generate from day one.

This is why preparing clean, well-documented financials for at least the prior three financial years is essential preparation work. It includes separating personal and business expenses, reconciling any outstanding tax obligations, ensuring BAS lodgements are current, and — where relevant — preparing a clear normalised EBITDA schedule that a prospective buyer’s accountants can work from.

What Buyers Scrutinise

• Consistency of revenue and margin across reporting periods
• Customer concentration — is more than 20–30% of revenue reliant on one or two clients?
• The sustainability of earnings without the owner’s direct involvement
• Clarity around owner-related add-backs and discretionary expenses
• Outstanding tax liabilities, ATO payment plans, or compliance gaps

Businesses that arrive at due diligence with clean, well-organised records move faster, negotiate from a stronger position, and are less likely to face price renegotiation late in the process.

4. The Legal House May Not Be in Order — and Buyers Will Find Out

Most business owners are focused on the operational and financial dimensions of a sale. The legal dimension often receives less attention — until due diligence surfaces issues that could have been addressed years earlier.

Buyers and their legal advisors will systematically review the business’s contracts, intellectual property position, regulatory compliance, employment arrangements, and any outstanding disputes. What they find shapes both their confidence in the asset and the terms on which they are willing to proceed.

Common Legal Gaps Found in Business Sales

• Intellectual property not formally owned by the company — logos, software, or proprietary processes developed by contractors without proper assignment
• Client contracts that are verbal or informal — revenue that cannot be demonstrated as contractually secured
• Leases or supplier agreements without assignability clauses — critical for asset sales where the buyer needs to inherit existing arrangements
• Employment contracts that are non-compliant or outdated — potential exposure under the Fair Work Act
• Licences and registrations that are in the owner’s personal name rather than the entity being sold
• No shareholders’ agreement or buy-sell provisions in businesses with multiple owners

Addressing these issues before going to market removes leverage from the buyer’s negotiating position and reduces the risk of conditions being imposed late in the transaction that erode price or create extended settlement delays.

5. Timing the Market — and Your Own Readiness — Matters More Than Most Owners Realise

Experienced M&A advisors will tell you that business sales are often driven by the owner’s personal timeline — a health event, burnout, a partnership dispute — rather than by commercial logic. The problem with this is that forced or reactive sales almost always produce inferior outcomes.

Industry multiples are not static. Buyer appetite varies with interest rates, economic confidence, sector trends, and the activity of institutional and private equity participants in a given market. Childcare businesses, for example, saw private equity-driven multiples in the range of 7–9x EBITDA at peak sector interest — a figure that contracted materially within a few years. Owners who timed their exit to align with strong sector demand realised a materially better outcome than those who waited.

Beyond external market conditions, a business’s own trading trajectory matters enormously. Buyers pay for forward earnings and growth confidence. A business presented at the top of a growth trend — ideally with two or three years of consistent upward revenue momentum — is a fundamentally different proposition to the same business presented during a plateau or decline, even if the underlying quality is identical.

Questions Worth Asking Now

• Is my sector currently attracting strong buyer interest, or is it in a period of consolidation or contraction?
• Is my revenue trending up, flat, or down — and what does that signal to a buyer modelling future earnings?
• If I had to exit in the next 12 months due to an unexpected personal event, what condition would a buyer find the business in?
• Do I have a realistic, independent assessment of what my business is actually worth — not what I believe it is worth?

The businesses that achieve the strongest sale outcomes are almost always the ones that began preparing at least two to three years before going to market — and where the decision to sell was made deliberately, from a position of commercial strength.