Choosing the Right Australian Business Structure: Proprietary Company (Pty Ltd) vs Family Discretionary Trust

Starting a commercial venture or restructuring an expanding enterprise in Australia requires one fundamental decision: What legal entity should house the business?

Operating under an inappropriate structure can cost tens of thousands in unoptimized taxes, expose personal family assets to trading creditors, and create major friction when seeking commercial loans or external equity.

In this guide, Tax Bridge Advisory Pty Ltd compares the two most prevalent corporate structures used by Australian small and medium enterprises: the Proprietary Limited Company (Pty Ltd) and the Discretionary Family Trust with a Corporate Trustee.

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Structure 1: The Proprietary Limited Company (Pty Ltd)

A company is an independent legal entity registered with the Australian Securities and Investments Commission (ASIC). It can own property, sue and be sued, incur commercial liabilities, and enter contracts under its own name.

Key Advantages:

1. Limited Liability Protection: Shareholders are generally protected from corporate debts. If the business encounters financial distress, personal assets (such as the family home) are insulated, provided directors comply with their statutory duties under the Corporations Act 2001.
2. Capped Corporate Tax Rate: Base rate entities (companies with aggregated turnover under $50 million where passive investment income is 80% or less) enjoy a flat tax rate of 25%. Any profit retained in the company for working capital or reinvestment is taxed at only 25%, rather than high individual marginal rates of up to 47%.
3. Credibility & Investor Readiness: Banks, institutional clients, and venture investors strongly prefer trading with a registered Pty Ltd entity over an unincorporated sole trader.

Important Constraints:

• Retained profits distributed to individual shareholders as unfranked or franked dividends are ultimately ‘topped up’ to the shareholder’s personal marginal rate.
• No 50% CGT Discount: Unlike individuals and trusts, companies are not entitled to the general 50% Capital Gains Tax discount when disposing of capital assets held for more than 12 months.
• Strict compliance with ASIC reporting, company registers, and Division 7A benchmark interest rates for shareholder loans.

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Structure 2: The Family Discretionary Trust

A Discretionary Trust is a legal arrangement where a Trustee holds business assets and trading income for the benefit of a specified class of Beneficiaries (usually family members and corporate beneficiaries), governed by a formal Trust Deed.

Key Advantages:

1. Income Streaming & Tax Flexibility: The trustee has absolute annual discretion to distribute net taxable income among family members in lower marginal tax brackets (e.g. spouse, adult children over 18), dramatically lowering the family unit’s aggregate tax bill.
2. 50% CGT Discount: Capital gains generated by a trust can flow through to individual beneficiaries, retaining eligibility for the 50% CGT concession.
3. Asset Protection via Corporate Trustee: Using a separate proprietary company as trustee prevents personal liability from attaching directly to family members.

Important Constraints:

• Zero Retained Earnings: Any net trust income not distributed by 30 June is taxed at the highest individual marginal tax rate (47%) in the hands of the trustee.
• Section 100A ATO Scrutiny: Trust distributions to adult children who do not receive the economic benefit of the funds are heavily audited by the ATO under Section 100A.
• Minors (children under 18) face penalty tax rates on unearned trust income exceeding $416.

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Comparison Matrix

Factor	Sole Trader	Pty Ltd Company	Discretionary Family Trust
Personal Liability	Unlimited personal risk	Limited to share capital	Limited (if corporate trustee)
Tax Rate	Individual rates (0% – 45%)	Flat 25% (Base rate)	Flow-through to beneficiaries
Retained Profits	N/A (taxed immediately)	Permitted at 25% tax	Not permitted (must distribute)
50% CGT Discount	Eligible	Ineligible	Eligible
Annual ASIC Fees	Nil	~$321 annual review fee	~$321 (for corporate trustee)

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The Hybrid Solution: Trading Company Owned by a Family Trust

For high-growth businesses and medical/consulting practices, our advisors frequently implement a dual-tier structure:

1. A Pty Ltd Company acts as the trading entity, employing staff and executing client agreements to contain trading liabilities, taxed at 25%.
2. A Family Discretionary Trust holds 100% of the shares in the trading company. Dividends declared by the company flow up to the trust and can be streamed flexibly to family members or a secondary corporate beneficiary (a “bucket company”).

Ready to structure your new venture or restructure for growth? Fill out our Private Company Set-Up Form or Trust Set-Up Form to get started with an advisor today.