Your domain name is more than just your web address. It's the first signal customers get about whether your business is legitimate, local, and trustworthy. And if you're an Australian small business, the choice between .com.au and .com matters more than most people realise.
The short answer: yes, you almost certainly want a .com.au domain. But there's more to it than that — and this guide covers everything you need to know, from eligibility requirements to choosing the right name to what to do if your preferred domain is already taken.
.com.au vs .com: What's the Actual Difference?
At a technical level, both work perfectly well as website addresses. The real difference comes down to trust, credibility, and local search performance.
Trust with Australian Customers
Half of Australian consumers say they will only shop on websites ending in .au. That's a significant portion of your potential customer base who will look at a .com address and wonder if the business is actually based in Australia — or whether it's an overseas operator or reseller.
The .com.au extension has been around for over 30 years. For Australian customers, it's the established marker of a legitimate, locally-registered business. It signals: "We're Australian, we have an ABN, we're accountable under Australian law."
A .com domain doesn't provide that reassurance. It could be registered by anyone, anywhere. For service businesses that rely on local trust — tradies, healthcare providers, professional services, retail — this distinction genuinely affects whether customers pick up the phone.
Local SEO: Does Google Care?
Yes, Google uses the domain extension as one signal of geographic relevance. A .com.au domain helps Google understand that your business is Australian and serves Australian customers, which can give you a mild ranking advantage in Australian search results compared to an equivalent .com site.
This isn't a massive ranking factor on its own, but combined with your Google Business Profile, local content, and Australian hosting, it contributes to a strong local SEO signal. Three out of four Australian small businesses use .au domains specifically to build trust and relevance with local customers.
When Might .com Be Better?
There are scenarios where .com makes sense:
- You operate internationally and don't want to appear exclusively Australian
- Your business name is already taken at
.com.aubut available at.com - You're a purely digital business with no local service area
For most bricks-and-mortar or service-area businesses in Australia, however, .com.au is the right choice.
.com.au Eligibility Requirements
Here's what most people don't know up front: you can't register a .com.au domain without an ABN or ACN.
auDA (the .au Domain Administration) requires that applicants have:
- An active Australian Business Number (ABN) or Australian Company Number (ACN), or another Australian government identifier
- A domain name that has a direct connection to your business — your trading name, a registered trademark, or a service you provide
In practice, this means your domain name needs to match (or closely relate to) your registered business name. You can't just register any .com.au domain speculatively.
For most legitimate operating businesses, this is no barrier at all. If you have an ABN and the domain reflects your business name or a core service, you'll qualify.
The Newer .au Domain
Since 2022, Australians have been able to register bare .au domains — for example, yourbusiness.au rather than yourbusiness.com.au.
The .au extension carries the same trust signals and eligibility requirements as .com.au. It's shorter, which some businesses prefer. The main consideration is that .com.au remains the more widely recognised and established format — most Australian customers still expect something.com.au rather than something.au.
Our recommendation: Register both. yourbusiness.com.au as your primary domain, and yourbusiness.au pointing to it as a redirect. This prevents anyone else from registering the shorter version and potentially causing confusion.
How to Choose a Good Domain Name
Your domain name should be easy to say aloud, easy to spell, and directly connected to your business. Here's a practical framework:
Match your business name first. If your business is "Bayside Electrical," aim for baysideelectrical.com.au. Consistency between your business name, domain, and social media handles makes you easier to find and remember.
Keep it under 20 characters. Shorter is better. Long domain names are hard to type, easy to misremember, and look cluttered in print.
No hyphens. bayside-electrical.com.au looks unprofessional and creates errors when spoken aloud — customers will often type it without the hyphen and miss your site.
No numbers (unless they're part of your name). 4u or 2go cause confusion. Is it "4" or "four"? Stick to letters.
Avoid creative spellings. Kleen instead of "Clean," `Xpress" instead of "Express" — these might feel clever but they cause spelling errors and make your business harder to find.
Check availability on social media at the same time. Ideally, your domain name, Facebook handle, and Instagram handle should all match. Use a tool like Namechk to check availability across platforms in one go.
How Much Does a .com.au Domain Cost?
A .com.au domain typically costs between $15 and $25 per year from a reputable Australian registrar. Registration periods are in two-year increments (unlike .com which is annual).
Watch out for:
- Inflated first-year pricing that renews at a much higher rate — check the renewal price before registering
- Bundled extras you don't need (privacy protection, website builders, email add-ons you'll get elsewhere)
- Domain locking — make sure you can transfer your domain to another registrar if you choose to
Where to Register Your Domain in Australia
Several reputable Australian registrars offer .com.au registration:
VentraIP — Australian-owned and operated, excellent local support, consistently competitive pricing. A solid first choice.
Crazy Domains — Well-known and frequently runs promotions. Widely used by Australian small businesses.
NetRegistry — One of Australia's oldest registrars, now part of a larger group. Reliable and established.
Netfleet — Worth checking if your preferred domain is already registered but potentially available for sale or drop-catching expired domains.
All of these are ICANN-accredited and can register .com.au and .au domains. Avoid registering through your website builder or hosting provider if possible — it's better to keep your domain separate so you have full control if you ever switch hosting.
What to Do If Your Preferred Domain Name Is Taken
This is a common situation and not necessarily a dead end. A few options:
Try a variation. If sydneyplumbing.com.au is taken, try sydneyplumbers.com.au or sydneyplumbingco.com.au. Adding "co," "group," or your suburb can work well.
Check if it's active. Many registered domains sit unused. If the domain has no active website, the owner may be open to selling. You can contact the registrant via the WHOIS lookup at whois.auda.org.au.
Wait for it to expire. Domains lapse when owners forget to renew. Services like Netfleet monitor expiring domains and let you back-order them.
Consider a location prefix or suffix. melbourneplumbing.com.au or plumbingmelbourne.com.au are both valid if the core name is taken — and they have the added benefit of including your city as a local SEO keyword.
Don't settle for a confusing workaround. If the domain variations all feel forced, it may be worth reconsidering your business name — especially if you're early stage.
Redirecting Multiple Domains
If you do end up registering multiple variations (e.g. both .com.au and .au), set all the secondary ones up as 301 redirects pointing to your primary domain. This consolidates your SEO authority into one address and prevents Google from seeing duplicate content.
Your hosting provider or domain registrar can typically set this up in a few minutes.
Getting Your Domain Sorted Is Step One
Your domain name is the foundation everything else is built on — your website, your email, your branding. Getting it right from the start avoids the pain of rebranding later.
Once you have your domain, the next steps are setting up a professional website and a business email address. For a full overview of everything an Australian small business needs to get online, see: Getting Your Small Business Online in Australia.
If you'd like everything handled for you — domain setup, website, professional email, and ongoing support — CodeQy's Business Pack covers all of it from $50/month.
Want help choosing and registering the right domain for your business? Talk to the CodeQy team →