What is the primary difference between a sole trader and a company structure in Australia?

The primary difference is legal liability and entity separation. According to the Corporations Act 2001, a company is a separate legal entity from its owners, offering limited liability, whereas a sole trader and their business are legally the same, meaning unlimited personal liability for business debts. This distinction impacts asset protection and tax obligations.

How long does it typically take to change a business structure in Australia?

The timeframe for changing a business structure in Australia varies significantly, often taking from a few weeks to several months. This depends on the complexity of the change (e.g., sole trader to company), the number of assets to transfer, and the efficiency of processing with bodies like ASIC and the ATO. Professional advice can streamline the process.

Can I transfer existing business contracts when changing my business structure?

Yes, existing business contracts can often be transferred, but this requires careful review and formal assignment or novation. According to contract law principles, consent from all parties to the original contract is usually necessary. Failure to properly transfer contracts can lead to them becoming unenforceable by the new entity.

Can I change my business structure after I’ve already started trading?

Yes — in many cases, an Australian business can change structure after it has started trading, but it is rarely just a paperwork update. Moving from a sole trader to a company, partnership to company, or adding a trust can affect tax, GST, licences, contracts, employees, asset ownership and how the

Skill level: General guidance
Time: Varies
Trade: Accounting & Business Structures
Updated: 31 October 2026

Can an Australian business change its structure after it has started trading?

What are the key considerations when changing an Australian business structure?

A business structure can usually be changed, but the process depends on what you have now and what you are moving to. Common changes include a sole trader incorporating a company, or a growing business reviewing whether a trust or company better suits its future plans. The right path depends on risk, profit levels, ownership, funding plans and administration.

You are often creating a new legal entity, not simply “updating” the old one. For example, a company is separate from its owners, while a sole trader is not. That can mean new registrations such as an ABN, TFN, PAYG withholding and possibly GST, plus ASIC company setup and ongoing obligations.

Tax and duty consequences need to be checked before anything is transferred. Moving business assets, contracts, trading stock, plant, intellectual property or property interests from one structure to another can trigger tax consequences. The ATO rules can be complex, and state-based duties may also need to be considered depending on the assets involved.

The change usually affects more than tax. Bank accounts, merchant facilities, finance agreements, leases, insurance, supplier terms, employee records, payroll setup and customer contracts may all need to be reviewed or transferred properly. This is one reason restructures are often more involved than business owners expect.

Timing and record-keeping matter. A restructure is generally cleaner when it is planned before major contracts are signed, new investors come in, or valuable assets are acquired. Good bookkeeping and up-to-date financial statements make it much easier for an accountant to map out the change and reduce avoidable errors.

What A Specialist Would Review For Your Situation

Why you want to change structure now — for example tax management, asset protection, bringing in a business partner, succession planning, staff growth, or preparing for sale or investment.

What assets, liabilities and registrations sit in the current structure — including ABN registrations, GST, payroll, equipment, vehicles, IP, debtor balances, leases and finance.

Whether any ATO rollover or restructure relief may be relevant and what conditions must be met before relying on it.

Commercial and legal impacts — such as ASIC requirements for companies, contract assignment issues, director responsibilities, trust deed considerations, and whether licences or insurances need replacing.

How to implement the change cleanly in your books — chart of accounts, opening balances, payroll cutover, invoice history, and whether old and new entities need to operate side by side for a period.

Common Costly Mistakes

Assuming a new structure can just “take over” the old ABN without checking the legal and tax consequences.

Transferring assets or signing new contracts before getting advice on ATO, ASIC and state duty implications.

Mixing personal and business transactions during the change, which creates bookkeeping and tax problems later.

Forgetting to update payroll, super, insurance, bank accounts, licences and supplier/customer details after the restructure.

When To Get Professional Help

If the business already has meaningful revenue, employees, assets, debt, contracts or more than one owner, DIY restructuring can become risky quite quickly. This is especially true if you are moving into a company or trust, want better asset protection, or are trying to improve tax outcomes without creating ATO or ASIC issues.

Talk To A Specialist

If you are thinking about changing structure, a short discussion with an accountant can help you understand the practical steps, likely risks and whether the timing makes sense. You can book a free accounting discovery call here: /finance/enquire?service=accounting

Frequently Asked Questions

Can I change from sole trader to company after starting my business?

Yes, many Australian business owners do this as their business grows. But it usually means setting up a separate legal entity and working through ATO, ASIC, banking, contract and bookkeeping changes rather than simply renaming the existing business.

Do I need a new ABN if I change business structure?

Often, yes, because the legal entity may be changing. The ABR and ATO treat different entity types differently, so whether a new ABN and tax registrations are needed depends on the structure you are moving from and to.

Will changing business structure save tax?

Sometimes a different structure can be more suitable, but it does not automatically produce a tax saving. Tax outcomes depend on profit levels, how money is drawn from the business, future plans, asset ownership and compliance costs, so this should be reviewed carefully with a qualified accountant.

Can I transfer my business name to a new structure?

Possibly, but the business name registration and the underlying legal entity are not the same thing. ASIC manages business name registration, and the name may need to be transferred or linked to the new entity correctly as part of the restructure.

Is it hard to change business structure once I have employees or contracts?

It can be significantly more involved. Employment obligations, Fair Work considerations, super, payroll reporting, service agreements, leases and customer contracts may all need attention, which is why many owners get accounting and legal guidance before making the change.

Important — General Information Only

This information is general in nature only and is not personal accounting, tax or business structures advice. It does not take into account your objectives, financial situation or needs, and you should consider your own circumstances and seek advice from a qualified accountant or registered tax professional before acting. For authoritative guidance, refer to the ATO, ASIC, the Tax Practitioners Board (TPB), CPA Australia and Chartered Accountants ANZ.

Frequently asked questions

Can I change from sole trader to company after starting my business?: Yes, many Australian business owners do this as their business grows. But it usually means setting up a separate legal entity and working through ATO, ASIC, banking, contract and bookkeeping changes rather than simply renaming the existing business.
Do I need a new ABN if I change business structure?: Often, yes, because the legal entity may be changing. The ABR and ATO treat different entity types differently, so whether a new ABN and tax registrations are needed depends on the structure you are moving from and to.
Will changing business structure save tax?: Sometimes a different structure can be more suitable, but it does not automatically produce a tax saving. Tax outcomes depend on profit levels, how money is drawn from the business, future plans, asset ownership and compliance costs, so this should be reviewed carefully with a qualified accountant.
Can I transfer my business name to a new structure?: Possibly, but the business name registration and the underlying legal entity are not the same thing. ASIC manages business name registration, and the name may need to be transferred or linked to the new entity correctly as part of the restructure.
Is it hard to change business structure once I have employees or contracts?: It can be significantly more involved. Employment obligations, Fair Work considerations, super, payroll reporting, service agreements, leases and customer contracts may all need attention, which is why many owners get accounting and legal guidance before making the change.
What is the primary difference between a sole trader and a company structure in Australia?: The primary difference is legal liability and entity separation. According to the Corporations Act 2001, a company is a separate legal entity from its owners, offering limited liability, whereas a sole trader and their business are legally the same, meaning unlimited personal liability for business debts. This distinction impacts asset protection and tax obligations.
How long does it typically take to change a business structure in Australia?: The timeframe for changing a business structure in Australia varies significantly, often taking from a few weeks to several months. This depends on the complexity of the change (e.g., sole trader to company), the number of assets to transfer, and the efficiency of processing with bodies like ASIC and the ATO. Professional advice can streamline the process.
Can I transfer existing business contracts when changing my business structure?: Yes, existing business contracts can often be transferred, but this requires careful review and formal assignment or novation. According to contract law principles, consent from all parties to the original contract is usually necessary. Failure to properly transfer contracts can lead to them becoming unenforceable by the new entity.

Written by Ledger, the Accounting & Business Structures specialist at QLD.Tools.