You have registered your company, great start. But now what? The truth is, registering your business is only the first box ticked. What you do next determines whether your company runs smoothly or hits avoidable roadblocks later on.
Let’s break it down clearly and practically, step by step.

So, You Have Your Certificate. What Comes Next?
Once ASIC sends you your Certificate of Registration and Australian Company Number (ACN), it’s easy to think you’re ready to trade right away. But hold on. Before your first sale or client invoice, there are a few key things you must set up to stay compliant and organised.
Skipping these steps might not seem like a big deal now, but it can cause trouble when you least expect it, like when you’re trying to open a business bank account, apply for funding, or lodge your first tax return.
Step 1: Set Up and Maintain Your Company Register
Every Australian company must keep a Company Register. Think of it as your business’s “official record book.” It’s where you keep proof of who owns shares, who your directors are, and what company decisions have been made.
You’ll need to store it either at your registered office or your main business location. At a minimum, your register should include:
- Your certificate of registration
- Share certificates
- The register of members (shareholders)
- Director consent forms
- Minutes from your first company meeting
- Copies of any ASIC forms you’ve lodged
Don’t treat this as a one-time setup. Keep it updated. If you add or remove directors or issue new shares, update your register straight away. ASIC can request to see it at any time, and not having it up to date can lead to fines.
Step 2: Keep Your Corporate Key Safe
Your Corporate Key is an eight-digit number ASIC gives your company after registration. It’s sent to your registered address within a few days, and it’s used to prove your authority when updating company details or lodging forms online.
Think of it as your company’s PIN. You wouldn’t hand out your bank PIN, right? The same logic applies here. Store it somewhere secure and only share it with trusted people who actually need it, usually, company directors or your accountant.
If you lose it, you’ll have to request a replacement from ASIC, which can delay updates or filings.
Step 3: Register for ABN, TFN, GST and PAYG
This is where many new business owners trip up. Registering your company doesn’t automatically sort out your tax obligations. You’ll likely need four key registrations through the Australian Business Register (ABR) or ATO.
Australian Business Number (ABN)
Even if you already have an ACN, your company still needs an ABN to operate. You can apply for one online, and if all details match, you’ll get it instantly. Without it, you can’t issue valid invoices or claim GST credits.
Tax File Number (TFN)
Every company needs its own TFN; it’s separate from your personal one. You’ll use it when lodging company tax returns. This can usually be done at the same time as your ABN application.
Goods and Services Tax (GST)
If your company’s annual turnover is $75,000 or more, you must register for GST. This isn’t based on profit but on total sales. Even if you’re just starting out, consider registering early if you expect to hit that threshold soon.

Pay As You Go (PAYG) Withholding
Planning to hire staff or pay contractors? You’ll need to register for PAYG withholding. This allows you to withhold tax from employee wages and pay it to the ATO. Not doing this can lead to serious penalties.
Step 4: Open a Business Bank Account
Mixing personal and business money might sound harmless, but it creates chaos come tax time. Every Australian company should have its own bank account.
When you go to open one, the bank will usually ask for:
- Your certificate of registration
- Company ACN and ABN
- Proof of identity for the director(s)
- The company’s constitution or share certificates
Make sure your company details match exactly across all documents. Even small mismatches (like a missing middle name or a different business address) can delay the process.
Step 5: Sort Out Business Insurance
Insurance might feel like an unnecessary expense at first, but one claim could wipe out your savings.
Here are two types of cover most businesses should consider:
- Public Liability Insurance – Protects you if your business activities cause property damage or injury to someone.
- Professional Indemnity Insurance – Protects you against claims that your advice or service caused a loss to a client.
Depending on your industry, you might also need workers’ compensation or product liability insurance. An insurance broker can help you figure out what’s legally required and what’s just good business sense.
Step 6: Display Your Company Details Correctly
Once you’re up and running, make sure your company name and ACN appear on all public documents. That includes invoices, contracts, quotes, and even your website.
This isn’t just a good look, it’s a legal requirement. It helps customers, suppliers, and regulators easily confirm who they’re dealing with. Forgetting to include it might make your documents invalid or non-compliant.
Step 7: Get Professional Support Early
You don’t have to handle everything alone. A registered tax agent, bookkeeper, or accountant can help set things up properly from the start. They can make sure your tax, payroll, and reporting systems comply with ATO and ASIC requirements.
That’s where Clear Tax Accountants can step in. Our team works with Australian businesses every day to help them set up correctly, stay compliant, and avoid unnecessary tax headaches. Whether you’ve just registered your company or you’re getting ready to trade, we can guide you through every step, from registrations and bookkeeping to tax planning and ASIC reporting.
Think of this as an investment, not a cost. Fixing errors later usually costs more than doing it right from day one.

Common Mistakes to Avoid
- Ignoring your ASIC notifications and missing deadlines
- Forgetting to update your Company Register
- Using your personal bank account for business transactions
- Not registering for GST when your revenue increases
- Overlooking required insurances
Any of these can create bigger issues down the line, from ATO audits to lost clients.
FAQs
1. How soon should I open my company bank account?
Ideally, within the first week after registration. You’ll need it before making or receiving any payments under your company name.
2. Do I need to register for GST straight away?
Not necessarily. Only if your business is expected to turn over $75,000 or more in a year. But many small businesses choose to register early for smoother tax claims.
3. Can I use my home as my company’s registered office?
Yes, if you have written consent from the property owner. Make sure ASIC has your correct address on record.
4. What happens if I lose my Corporate Key?
You’ll need to contact ASIC to request a new one. It’s best to keep it stored securely in both digital and physical form.
5. Do I need an accountant straight away?
It’s not mandatory, but it’s strongly recommended. An accountant can set up your bookkeeping, explain your tax obligations, and save you headaches later.
Final Thoughts
Registering your company is just step one. The real test comes after setting up the right systems, keeping your records straight, and protecting your business from risk.
If you stay on top of these post-registration steps, you’ll not only stay compliant but also build a business that runs smoothly and looks professional from day one.
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