CGT Trap at Death: Buy-Sell Agreements for Australian Business Owners

24 September 26
Uncategorized

Yes, a properly drafted buy-sell agreement lets surviving business owners buy a deceased co-owner’s interest, usually funded by life insurance proceeds treated as a capital receipt rather than income. Getting the tax treatment right depends on drafting a valid condition precedent, and on lining it up with ATO rulings including AID 2003/1189 and AID 2004/668, plus ASIC’s replaceable rules on share transmission. Read on for the funding mechanics, then get specialist legal and tax advice before you sign anything.

TL;DR:

  • Properly drafted conditions precedent are essential to ensure the buy-sell agreement triggers only at the correct event, such as death or incapacity, avoiding unintended CGT consequences.
  • The selected funding structure must align with the insurance policy definitions, as mismatches can cause costly legal and tax errors that undermine the agreement.
  • Valuation clauses should be clear, current, and periodically reviewed to prevent disputes over business value, which are a leading cause of buy-sell litigation.
  • Coordination with wills, powers of attorney, and company constitutions is critical to prevent delays or legal gaps when a shareholder dies or becomes incapacitated.
  • Specialist legal and tax advice is necessary before signing, especially to ensure compliance with ATO rulings and ASIC rules, and to prevent the agreement from unintentionally triggering tax or legal issues.
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Table of Contents

What is a buy-sell agreement and how does it work in Australia?

A buy-sell agreement (also called a business succession agreement) is a contract between business owners that sets out what happens to a person’s ownership stake if they die, become permanently disabled, or leave the business unexpectedly. It does two jobs at once: it fixes who buys the departing owner’s share, and it locks in how that purchase gets paid for. The ATO’s own guidance frames buy-sell agreements around exactly these two features: transfer mechanics and funding arrangements, most commonly using life insurance.

Three structures dominate in practice:

  • Put and call options — the surviving owners get a call option to buy the deceased’s shares, and the estate gets a put option to sell them. Either side can trigger the transaction, which avoids arguments about who has to move first.
  • Cross-purchase agreements — surviving owners buy the deceased’s interest directly, often funded by policies each owner holds on the others’ lives. Common in partnerships and small proprietary companies with two or three owners.
  • Entity purchase agreements — the company or trust itself buys back the departed owner’s interest, funded by a policy the entity owns. This suits larger companies or where there are more than a few owners, since it avoids each owner needing separate cross-owned policies.

Which structure fits depends heavily on your business type. Partnerships usually use cross-purchase arrangements because there’s no separate legal entity to hold the buyback obligation. Companies can use either cross-purchase or entity purchase, and trusts typically need bespoke drafting tied to the trust deed. Whichever form you choose, the surviving owners keep control of the business, and the deceased’s estate receives a cash payment instead of an ongoing (and often unwanted) stake in a business they can’t run.

What triggers a buy-sell agreement, and how do you get the timing right?

Buy-sell agreements only work if the trigger events are drafted precisely. A vague trigger clause is one of the most common reasons these agreements fail exactly when they’re needed most.

  1. Death — the standard trigger, usually activating the option to buy within a set window (often 30 to 90 days) after the estate’s executor is appointed.
  2. Total and permanent disablement (TPD) — defined by reference to the insurance policy funding the agreement, not by a generic medical standard.
  3. Incapacity — covers scenarios short of TPD, such as a long-term cognitive impairment that stops an owner participating in decisions.
  4. Serious illness or trauma — sometimes included as a separate trigger to align with trauma insurance products.
  5. Retirement or voluntary exit — less urgent than death, but still needs a funding mechanism since insurance won’t pay out.
  6. Insolvency or bankruptcy of an owner — protects the business from an outside trustee in bankruptcy gaining an ownership stake.

Drafting choices here have real consequences. Narrow the definition of TPD too tightly and a genuinely incapacitated owner might not trigger a buyout, leaving the business in limbo. Widen it too far and you risk a trigger firing over a temporary illness. Notice periods and exercise deadlines matter just as much as the trigger definition itself, since a slow-moving option clause can leave a business without clear leadership for months while paperwork catches up.

Pro Tip: Match your trigger definitions word-for-word to your insurance policy’s definitions. A mismatch between what the agreement says triggers a buyout and what the insurer says triggers a payout is one of the most expensive drafting errors we see.

Funding and tax: what the ATO actually says about insurance-funded buyouts

Funding is where buy-sell agreements succeed or fail in practice. There are four realistic routes: life insurance (either cross-owned by each partner or held by a third-party structure), company reserves or retained profits, external loan finance, or a mix where the estate agrees to staged payments. Life insurance dominates for a simple reason: without it, surviving owners often have to find a lump sum they don’t have, right when the business has just lost a key person.

The ATO’s position on insurance-funded buyouts is favourable, but it hinges on getting the drafting right. Under ATO ID 2003/1189, life insurance proceeds used to fund a buy-sell agreement are treated as capital receipts rather than assessable income. That’s a meaningful difference: it generally keeps the payout out of ordinary income tax, though capital gains tax consequences still need checking against your specific structure.

The bigger trap sits in timing. ATO ID 2004/668 confirms that a buy-sell agreement drafted with a genuine condition precedent isn’t treated as “entered into” for CGT purposes until the trigger event, such as death, actually happens. Get that condition precedent wrong, or leave it out, and the agreement can be read as an immediately binding contract, triggering CGT event A1 at the date of signing rather than at the date of death, potentially years later and at a completely different valuation.

The tax trap in numbers: a poorly drafted condition precedent doesn’t just cost legal fees to fix. It can shift a CGT event from a future date (death) to the signing date, exposing owners to tax on a transaction that hasn’t actually happened yet.

Superannuation adds another layer of risk. Using an SMSF to hold insurance that funds a buyout between related parties can breach the Superannuation Industry (Supervision) Act, since it can look like the fund is providing financial assistance to a member or relative. This is a well-documented ATO concern, and it’s worth checking your structure carefully if super is anywhere near your funding plan.

Before signing, ask your accountant or tax lawyer:

  • Does our condition precedent actually meet the standard set in AID 2004/668, or does it read as an unconditional contract?
  • Are our insurance policies owned in a way that matches our chosen structure (cross-purchase vs entity purchase)?
  • Could stamp duty apply to the share or unit transfer in our state?
  • Does any part of our funding touch an SMSF, and if so, does it risk a SISA breach?

Drafting essentials: valuation, payment terms and avoiding disputes

Valuation disputes are the single biggest driver of buy-sell litigation, usually because the agreement either has no valuation mechanism or one that’s too vague to apply cleanly years after signing.

Three valuation approaches are common:

  • Fixed formula (e.g. a multiple of EBITDA or net profit) — simple and predictable, but can go stale if the business changes significantly.
  • Independent periodic valuation — a qualified valuer revisits the figure every one to two years, keeping it current but adding an ongoing cost.
  • Expert determination at the trigger date — a valuer is appointed only when the trigger fires, avoiding stale numbers but introducing delay right when speed matters most.

Payment terms need equal attention. A lump sum funded entirely by insurance is cleanest, but where the payout doesn’t cover the full valuation, agreements often provide for staged payments with security (such as a mortgage over business assets) and an agreed interest rate on the unpaid balance.

Condition precedent language deserves its own read-through with a lawyer who understands the ATO’s position, not just standard contract drafting. The clause needs to make clear that no binding obligation to transfer exists until the trigger event occurs, otherwise you risk the exact CGT timing problem described above.

Dispute-avoidance clauses are cheap insurance against expensive litigation later:

  1. An expedited expert determination clause that appoints a single valuer to resolve disagreements within a fixed timeframe.
  2. A cap on recoverable legal costs if a dispute proceeds to determination.
  3. A confidentiality clause covering the valuation process and business financials.
  4. A default mechanism if the parties can’t agree on a valuer, such as nomination by the state’s law society.

Our inheritance tax and CGT timing guide covers how these traps intersect with the broader two-year main residence and estate exemptions that often run parallel to a business buyout.

Company mechanics: shares, executors and sole director risk

When a shareholder dies, their shares don’t just disappear or automatically transfer to the surviving owners. Under ASIC’s replaceable rule 35, the deceased’s personal representative (the executor or administrator) becomes entitled to be registered as the shareholder, or to transfer the shares according to the buy-sell agreement, once probate or letters of administration are granted.

Illustration of shares transferring through probate

That grant of authority isn’t instant, and this is where sole director companies face real exposure. If a sole director and sole shareholder dies without a will, no one has immediate legal authority to run the company. Someone has to apply for letters of administration before the business can access its own bank accounts, sign contracts, or even pay staff, and that process can take months. A buy-sell agreement doesn’t remove this problem entirely, but pairing it with an up-to-date will and enduring power of attorney closes most of the gap.

Once an executor is appointed, practical steps include:

  • Confirming ASIC has been notified within the required 28-day window for any change in shareholding or beneficial ownership.
  • Checking the company constitution against the buy-sell agreement for any conflicting share transfer restrictions.
  • Coordinating with the deceased’s power of attorney documents, which cease on death but matter for any pre-death transactions still settling.
  • Reviewing whether the will specifically addresses the business interest, or whether it falls into the general estate.

Our guide to wills for business owners walks through how to structure a will so it works with, rather than against, an existing buy-sell agreement. Executors dealing with a partial or unclear estate should also see our steps to fix partial intestacy in NSW.

How to put a buy-sell agreement in place: a step-by-step roadmap

  1. Agree objectives and structure. Sit down with co-owners and decide whether you want put and call options, a cross-purchase, or an entity purchase, based on your business structure and number of owners.
  2. Choose triggers, valuation method and payment terms. Lock in the trigger definitions (matched to insurance policy wording), pick a valuation method suited to how often your business value shifts, and settle whether payment is a lump sum or staged.
  3. Arrange funding and test the tax outcome. Get insurance quotes matched to each owner’s share value, then have an accountant model the CGT and income tax position under both AID 2003/1189 and AID 2004/668 before anyone signs.
  4. Instruct lawyers to draft condition precedent language and coordinate with estate documents. This is the step most owners rush, and it’s the one that determines whether the agreement actually delivers the tax outcome you modelled in step 3. Wills and powers of attorney need to be checked against the agreement at the same time, not afterwards.
  5. Sign, register changes and schedule reviews. Notify ASIC of any resulting share register changes within the required timeframe, store signed documents securely, and set a calendar reminder to revisit valuations and trigger definitions every two to three years or after any major business change.

Owners who want a broader checklist covering the estate side of this process can work through our 30/90-day estate planning checklist alongside these steps.

The disputes we see most often trace back to two things: valuation clauses too vague to apply years later, and missing or defective condition precedent language that triggers an unwanted CGT event. A trigger clause that doesn’t match the insurance policy definition is the third recurring problem, and it’s entirely avoidable.

Coordinating corporate, tax and estate advice from the outset costs less than fixing a defective agreement after someone has died, when emotions are high and the business is already under pressure. Firms like HOSO Sovereign make a similar point about bespoke structuring: default rules rarely achieve what owners actually intended, and that gap only becomes visible at the worst possible time.

What the research actually tells us about this space

Most guidance on buy-sell agreements treats them as a one-off drafting exercise. That’s the wrong frame. The agreement is only as good as its coordination with the will, the power of attorney, and the company constitution sitting alongside it, and that coordination is exactly where most agreements quietly fail.

Conventional advice overweights the insurance product and underweights the condition precedent clause. Owners spend weeks comparing policy premiums and five minutes on the legal wording that determines when CGT actually bites. Based on the ATO’s own rulings, that’s backwards: the tax outcome hinges entirely on drafting, not on which insurer you choose.

If you’re prioritising one thing first, make it this: get your condition precedent clause checked by someone who has read AID 2004/668, and get your will checked against your buy-sell agreement in the same sitting. Doing these separately, months apart, is how gaps open up. Business owners who treat this as an estate planning exercise, not just a commercial contract, end up with agreements that actually hold up when they’re tested.

— George

If a buy-sell agreement failed to protect your interests, or a business dispute has spilled into contested estate territory, cost shouldn’t be the reason you don’t act. Simons George Legal offers No Win, No Fee arrangements for eligible cases, and we check your eligibility during a free initial consultation. That removes the upfront cost barrier for people with a legitimate claim who might otherwise sit on their hands. If you think your matter qualifies, book a free case assessment through our No Win, No Fee eligible disputes page and find out where you stand before you spend a dollar.

No Win, No Fee arrangements are subject to case eligibility and a written costs agreement. Liability limited by a scheme approved under Professional Standards Legislation.

Sources

Primary references used in this guide: the ATO’s rulings on insurance proceeds as capital receipts and CGT timing for buy-sell agreements, ASIC’s replaceable rules, and the Partnership Act 1892 (NSW).

This article is general information, not a substitute for advice from a qualified lawyer. Consult a qualified legal professional about your own circumstances before acting on anything here.

FAQ

What triggers a buy-sell agreement?

The standard triggers are death, total and permanent disablement, and incapacity, though many agreements also include serious illness, retirement, or insolvency. The exact trigger wording should match the definitions used in the funding insurance policy to avoid a mismatch between what activates the agreement and what the insurer actually pays out for.

What are the disadvantages of a buy-sell agreement?

The main risks are drafting related: a missing or defective condition precedent can trigger an unwanted CGT event at signing instead of at death, under ATO ID 2004/668, and a vague valuation clause can lead to costly disputes years later. Agreements also need periodic review, since a stale valuation formula or outdated trigger definition can undermine the whole arrangement.

What should be included in a buy-sell agreement?

A complete agreement covers the transfer mechanism (put and call options, cross-purchase, or entity purchase), a clearly defined trigger list, a valuation method, payment terms, and carefully drafted condition precedent language. It should also be coordinated with the owners’ wills and, where relevant, company constitutions, since ASIC’s replaceable rules govern how shares transmit on death by default.

Do I inherit the debt of a business when I buy it in Australia?

Buying a business interest through a buy-sell agreement generally means acquiring the ownership stake itself, not automatically assuming the deceased owner’s personal debts, though this depends heavily on the business structure and how the agreement is drafted. Partnerships carry different exposure to companies, since under the Partnership Act 1892 (NSW), a partnership is dissolved on a partner’s death unless a prior agreement says otherwise, which can affect what liabilities transfer and to whom.

Simons George Legal advises on the estate planning side of business succession, including coordinating wills, powers of attorney, and company documents with existing or proposed buy-sell arrangements. Book a consultation through our wills and estates services page to have your documents reviewed alongside your broader estate plan.

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