If you are opening a retail shop in Australia, you may have heard the term 'ACN' but been unsure what it means or whether you need one.
This article explains the Australian Company Number (ACN), how it differs from an ABN, and exactly when a retail shop must have an ACN.
What is an ACN?
An Australian Company Number (ACN) is a unique 9-digit identifier issued by ASIC to every registered company in Australia.
It serves as a company's 'birth certificate' and is used to track corporate activities.
- Format: 9 digits (e.g., 123 456 789).
- Issuing body: Australian Securities and Investments Commission (ASIC).
- Who gets one: Only registered companies (Pty Ltd, Ltd, etc.). Sole Traders and partnerships DO NOT have an ACN.
- Purpose: Identifies the company for legal, tax, and regulatory purposes.
Key distinction: Every company has an ACN. Not every business has an ACN (only incorporated entities).
ACN vs ABN: What's the Difference?
Many people confuse ACN and ABN. Here is the simple breakdown:
- ABN (Australian Business Number): An 11-digit number issued by the Australian Business Register (ABR). Required for any entity (Sole Trader, partnership, company, trust) that carries on a business in Australia. Used for tax invoicing, GST, and dealing with other businesses.
- ACN (Australian Company Number): A 9-digit number issued by ASIC. Only for registered companies. Used for corporate compliance (annual reviews, director appointments, share issues).
Every company that has an ACN must also have an ABN. But you can have an ABN without an ACN (if you are a Sole Trader or partnership).
When Does an Australian Retail Shop Need an ACN?
Your shop needs an ACN if and only if your business is structured as a registered company (Pty Ltd).
Let's look at three scenarios:
Scenario 1: Sole Trader running a small boutique
You trade as 'Emma's Fashion' with an ABN but no ACN.
This is perfectly legal and common for small shops with low liability risk.
Scenario 2: Two friends operating a hardware store as a partnership
They share an ABN but no ACN.
The partnership is not a separate legal entity. Each partner has unlimited liability.
Scenario 3: A Pty Ltd company running a chain of coffee shops
The company (e.g., 'Melbourne Brewers Pty Ltd') has an ACN and an ABN.
The shop trades under a registered business name. This structure protects the directors' personal assets.
Conclusion: Your shop needs an ACN only if you choose the Pty Ltd structure. Most small, single-location shops do NOT need an ACN.
How to Get an ACN (If You Decide You Need One)
To obtain an ACN, you must register a company with ASIC. Steps:
- Choose a company name: Must end with 'Pty Ltd' (Proprietary Limited). Check availability on ASIC Connect.
- Determine your company type: Most small shops choose 'Proprietary company limited by shares'.
- Appoint directors and shareholders: Minimum 1 director (who must be an Australian resident) and 1 shareholder (can be the same person).
- Prepare a constitution (optional): Or rely on ASIC's replaceable rules.
- Register via ASIC Connect or a registered agent: Online registration costs approx. $500–$600.
- Receive your ACN: ASIC will issue a Certificate of Registration with your 9-digit ACN.
Once you have an ACN, you automatically get an ABN linked to the company (or you apply for ABN separately).
Where Must You Display Your ACN?
If your shop is a company (has an ACN), Australian law requires you to display the ACN on:
- All invoices, receipts, and purchase orders.
- Official company documents (e.g., letterhead, contracts).
- Your website (in the footer or terms & conditions page).
- Your shop's signage? No – only if it's part of a formal document. Physical shopfront signage does not need an ACN, but business registration certificates must be kept on premises.
- Emails promoting goods or services.
Failure to display your ACN correctly can result in fines (up to $60,000 for companies).
Do You Need an ACN to Open a Business Bank Account?
Not necessarily. Most banks will open a business account for:
- Sole Trader: Using your ABN and personal ID.
- Company: Using your ACN and ABN.
- Partnership: Using the partnership ABN.
So a retail shop operating as a Sole Trader can absolutely open a business bank account without an ACN.
Common Misconceptions About ACN
- Misconception 1: 'Every business needs an ACN.' – False. Only registered companies need one.
- Misconception 2: 'An ACN gives you tax benefits.' – The ACN itself doesn't. But the company structure (which requires an ACN) may offer tax flexibility.
- Misconception 3: 'You can have an ACN without an ABN.' – False. Every company with an ACN must also have an ABN.
Pro tip: If you are just starting a small Australian shop as a Sole Trader, ignore ACNs entirely. Focus on getting your ABN and registering your business name with ASIC. Reconsider the company structure (and thus ACN) when your profits exceed $100k annually or you hire multiple staff.
In summary, an ACN is only for Pty Ltd companies. Most small Australian retail shops do NOT need an ACN and can operate perfectly well with just an ABN.
Choose the structure that matches your risk tolerance and growth plans.