Where Do You Have to Display Your Company Name and ACN: A Guide

“Am I actually compliant everywhere?” 

This is a common worry for company owners, especially when you assume that adding your details to invoices is enough.

In reality, ASIC requirements go beyond just billing documents, and missing key details in the wrong place can quietly put your business at risk.

This guide breaks down exactly where you must display your company name and Australian Company Number (ACN), so you can stay compliant without overthinking it. Let’s get down to business. 

When do you legally need to display your company name and ACN?

If you operate a registered company in Australia, you must display your company name on all public-facing documents. You must also display your ACN on most official documents, unless you correctly use your Australian Business Number (ABN) in its place.

The Australian Securities and Investments Commission (ASIC) sets these rules, which apply to both physical and digital business materials. The goal is simple, whoever interacts with your business needs to be able to clearly identify it.

In practice, this means you need to display your name and ACN on more than just your invoices. You must also consider contracts, communications, and even your website. If your business interacts with customers, suppliers, or the public, your company details need to be visible.

Where you must display your company name and ACN (Australia requirements)

Here’s a clear breakdown of where you must display your company name and ACN, so you can quickly check what applies to you and stay compliant.

On invoices and receipts

• Where: Any billing documents issued to customers
• What’s required: Company name (required), ACN (required unless ABN is used)
• Exception(s): If your ABN is displayed and includes your ACN, you don’t need to show ACN separately

According to the name and ACN invoice requirements, your invoice footer might look something like this: “ABC Pty Ltd | ABN XX XXX XXX XXX”

On contracts and legal documents

• Where: Any legally binding documents, like agreements, terms and conditions, and legal forms
• What’s required: Company name (must match ASIC registration), ACN (required)
• Exception(s): None

Incorrect details here can affect enforceability, so accuracy matters.

On business letters and emails

• Where: In formal correspondence, including digital communication
• What’s required: Company name (required), ACN (generally required)
• Exception(s): None in most business contexts

This isn’t just a printed business letterhead requirement in Australia. You must include your company details in digital communication, such as email signatures, which are often overlooked.

On your website and digital platforms

• Where: Websites, landing pages, checkout pages
• What’s required: Company name (required), ACN (recommended and commonly expected)
• Exception(s): ACN may not be strictly mandatory in all cases, but the best practice is to include it

When displaying an ACN on a website in Australia, you’ll typically find these details in the footer or contact page.

On public signage and premises

• Where: Shopfronts, offices, physical business locations
• What’s required: Company name (required if operating publicly)
• Exception(s): ACN is generally not needed for signage

Here is an example of what compliance with ASIC signage requirements for a private company might look like: “ABC Pty Ltd”, but not the ACN. 

Here is a quick summary table to help you get your documents and signage in order. 

Location/document	Company name required	ACN required	Notes
Invoices & receipts	Yes	Yes (or ABN)	ABN can replace ACN if it includes it
Contracts & legal documents	Yes	Yes	Must match ASIC-registered name
Business letters & emails	Yes	Yes	Applies to email signatures
Website & digital platforms	Yes	Recommended	Best practice: include in the footer or the contact page
Public signage & premises	Yes	No	ACN is generally not required for signage

ACN vs ABN — what do you actually need to display?

This is one of the most common areas of confusion for Australian businesses, especially when setting up invoices and templates.

• ACN (Australian Company Number): A unique 9-digit number issued when you register your company. It identifies your company as a legal entity.
• ABN (Australian Business Number): An 11-digit number used for tax and business identification. Typically, the ABN incorporates your ACN. 

Here’s the key rule: If you display your ABN, and it includes your ACN, you generally don’t need to display the ACN separately.

For example, if your invoice includes a valid 11-digit ABN that incorporates your ACN, that alone will typically satisfy ASIC requirements. This is why many businesses choose to display their ABN instead of their ACN to start with. It covers both identification and tax obligations in a single line.

However, if you’re not displaying an ABN, you must include your ACN on relevant documents. Missing both can leave your business non-compliant.

What happens if you don’t display your company details correctly?

If you don’t display your company name and ACN correctly, you could face several avoidable issues. These include: 

• Fines or penalties from ASIC (typically modest but avoidable)
• Reduced credibility with clients and partners
• Legal complications, particularly if documents are challenged or disputed

More importantly, missing or incorrect details can affect trust in your brand.. Clients, suppliers, and partners may question your credibility if your documents appear incomplete or inconsistent. 

Generally, it’s less about harsh punishment and more about maintaining transparency and professionalism in business dealings. 

That said, there are certain more serious cases. For example, errors on contracts or legal documents can create complications if those agreements are ever challenged or need to be enforced.

Common mistakes businesses make

Many compliance issues come down to small oversights that are easy to miss during day-to-day operations. This is especially relevant when your business grows or systems change. 

Some typical errors include:  

• Using a trading name instead of the registered company name
• Forgetting to include ACN (or ABN) on invoices
• Not updating templates after the company name changes
• Leaving company details off website footers or contact pages
• Missing ACN in email signatures
• Confusing when to use ABN versus ACN

These mistakes are easy to miss. Templates become outdated, old documents are copied over and over again, and everyone assume one correct example applies everywhere. Over time, inconsistencies creep in across invoices, contracts, emails, and digital platforms.

The fix is straightforward: 

1. Start by standardising your templates — ensure your invoice, contract, and email signature formats all include the correct company name and ACN or ABN. 
2. Do a quick audit of your website, especially your footer and contact page. 
3. Set a reminder to review these details whenever you update your business structure or branding.

These are easy issues to correct, but only if you know where to look and take the time to check.

Quick compliance checklist

• Confirm your exact ASIC-registered company name
• Add your ACN (or ABN) to all invoices and receipts
• Review contracts and legal templates for accuracy
• Update your website footer and contact page
• Check all email signatures across your team
• Review signage if you operate from a physical location

FAQs

How Lawpath can help keep your company compliant

If you registered your company through Lawpath, you can manage many of these steps directly through your dashboard. Simply access compliant document templates, update company details, and ensure your records stay aligned with ASIC requirements.

Lawpath also provides ongoing compliance support and access to legal advisors, making it easier to stay on top of obligations as your business evolves.