"Should we go .com.au or .com?" is the most reliable distraction in any new founder's first month. The honest answer is shorter than the panic suggests. Here's the practical version.
The four real options
- .com.au: best trust signal in Australia, eligible only to ABN holders, blocked from non-Australians. Slight SEO advantage for AU search.
- .com: the default global TLD. Higher trust globally, higher price for premium names, no eligibility restrictions.
- .ai: became the default for AI-themed startups. Premium pricing, no native trust signal in Australia.
- .io: beloved by developer-focused B2B startups around 2018–2022; less hot in 2026 but still credible.
When .com.au wins
- You serve Australian customers exclusively or primarily.
- Trust is critical (financial services, healthcare, legal, real estate).
- Local SEO matters, Google gives mild AU-search priority to .com.au.
- The .com is unavailable or premium-priced and your audience is local.
For a small Australian B2C business, a café, a real estate agency, a local trades business, .com.au is almost always correct.
When .com wins
- You're targeting a global market eventually, not just Australia.
- You're SaaS or any product with international ambition.
- Brand strength matters more than local trust.
- You can afford a premium .com, sometimes $5k–$50k for a clean name.
For a SaaS targeting global customers, .com is the default. Trying to get a global .com customer to type ".com.au" loses you signups.
When .ai wins
- Your product is genuinely AI-led, and customers expect that.
- You're competing in a category where every contender is .ai (AI tools, dev infra, agents).
- You can stomach the $100+/year renewal.
The .ai novelty has worn off enough that "FooBar.ai" doesn't automatically signal AI-native; the field is too crowded. Use it if it's a genuine fit, not because it's a marketing flex.
When .io wins
- You're developer-tools or B2B technical infrastructure.
- The .com is taken and you don't want a .net.
- Your audience is comfortable with .io and won't think it odd.
For a non-technical audience, .io still confuses people. "Is that I-O or one-zero?", fair question. Avoid for B2C.
Domain choice matters less than what you build. But it makes a thousand small decisions slightly easier or slightly harder for the next five years. Choose carefully, then forget it.
The "buy both" play
Common pattern: own .com.au and .com, redirect one to the other. Cost: $30–$300/year combined. Trust win: substantial. Most serious Australian startups own both. If only one is taken at affordable prices, get that one and revisit later.
What to avoid
- Hyphens or numbers. "FindDevs.com.au" works; "Find-Devs.com.au" or "FindDevs2.com.au" don't.
- .net, .org, .biz: read by users as "they couldn't get a real domain."
- Brand-new TLDs (.tech, .app, .xyz). Specific cases where they make sense; default is they signal "couldn't get the real one."
- Buying a premium .com you can't afford. $20k for a domain when your bank account is $30k is the wrong allocation. Build first; upgrade the domain later.
The bottom line
For Australia-focused businesses: .com.au. For global SaaS or international ambition: .com (and own .com.au too if affordable). For genuine AI-native products with the budget: .ai. For developer-tools B2B: .io is fine. Avoid hyphens, numbers, and obscure TLDs.
Once you've got the domain, FindDevs gets you three Australian developers to build on it. Free, in 24 hours.