What is an unincorporated business?

Claudia AinsleyWritten byClaudia Ainsley
Reviewed byMatt Leeburn
Updated 26 Aug 2026

An unincorporated business is a business that has no separate legal personality, so its owners contract in their own names and are personally liable for its debts.

Key points

  • The owners enter contracts in their own names, and creditors can pursue personal assets such as a home or savings for business debts.
  • Common forms include the sole trader, the partnership, a joint venture and an unincorporated association.
  • Profits are not taxed in the business: they are allocated to the owners and taxed at each owner's own rate, usually a marginal rate.
  • You still need an ABN if you carry on an enterprise, plus GST registration once turnover reaches the registration threshold.
  • Unlimited personal liability is the usual reason owners move to a company as risk and staff numbers grow.

How an unincorporated business works

Common types of unincorporated business

When to consider incorporating

Example

Not to be confused with

Company
a company is a separate legal entity, so it holds the contracts and the debts rather than the owners
Sole trader
a sole trader is one kind of unincorporated business, not a separate alternative to it

Frequently asked questions

Who is liable if an unincorporated business goes into debt?

The owners are. Because there is no separate entity, creditors can pursue personal assets such as savings or the family home to recover business debts, and the owners are personally named if the business is sued. Unlimited personal liability is the main legal risk of staying unincorporated.

Do I need an ABN if I'm a sole trader or in a partnership?

If you are carrying on an enterprise, you generally should register for an ABN, whether you trade as a sole trader or in a partnership. The ABN goes on your invoices and makes GST reporting and BAS lodgement much easier. Check the ATO's guidance for your situation.

Do unincorporated businesses pay GST?

They do once annual turnover meets the GST registration threshold. At that point you must register for GST and lodge Business Activity Statements. The structure does not change the rule, because GST follows turnover rather than whether you are incorporated. Your accountant or the ATO can confirm the current threshold.

Can an unincorporated business employ staff?

Yes. Being unincorporated does not stop you employing people. You need to set up PAYG withholding, withhold tax from wages, lodge PAYG reports, meet superannuation obligations for eligible employees, and comply with workplace law. Keep clear records of wages and contributions.

How long do I need to keep business records?

Generally five years for business records that relate to tax and BAS, including income, expenses, invoices and payroll. Specific rules apply depending on the record type, so check the ATO's requirements. A separate business bank account makes those records much easier to produce.

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Sources

This article is general information only and is not financial advice.