If you’re a business owner in Australia, you’re likely familiar with the Business Activity Statement (BAS). But when it comes to how you actually lodge your BAS, things can get confusing. Should you do it online, post a paper form, or get a registered agent involved?
Here’s the answer up front: The ATO offers three main ways to lodge your BAS—online, via paper form, or through a registered tax or BAS agent. Each method suits different business needs. Lodging online is generally the fastest and most efficient, while agents add expert oversight. Paper forms are still available but increasingly phased out in favour of digital options.
In this article, we’ll unpack each BAS lodgment method clearly, helping you choose the best option for your situation. Whether you’re just starting out or looking to streamline your compliance, understanding these methods can save you time, stress, and even money.
What Is a BAS and Who Needs to Lodge It?
The Business Activity Statement (BAS) is a form submitted to the Australian Taxation Office (ATO) by registered businesses to report and pay goods and services tax (GST), pay as you go (PAYG) instalments, PAYG withholding, and other taxes.
If you’re registered for GST, you’ll need to lodge a BAS—typically monthly or quarterly. The ATO sends a tailored BAS form based on your business’s registration details.
Method 1: Lodging BAS Online
ATO Online Services for Business
This method is ideal for small to medium businesses comfortable managing their own finances. To lodge through ATO Online Services:
- You’ll need an active myGovID linked to your business via Relationship Authorisation Manager (RAM).
- Log in to ATO Online Services for Business.
- Navigate to the BAS lodgment section, fill out the form, and submit it directly.
Benefits:
- Immediate confirmation of receipt
- Automated calculations and prefilled fields
- Faster processing and refunds
Best for: Tech-savvy business owners managing their own BAS reporting.
Online Through Tax or BAS Agents
If you’re working with an agent, they can lodge online on your behalf using ATO’s Agent Portal or software.
Benefits:
- Extended lodgment deadlines
- Professional review and compliance assurance
- Less risk of errors or missed credits
Best for: Business owners seeking expert oversight or with complex reporting.
Accounting Software Integration
Many cloud-based accounting platforms like Xero, MYOB, and QuickBooks allow direct BAS submission to the ATO. The software pulls figures from your books and helps with automated GST reconciliation.
Benefits:
- End-to-end digital process
- Reduced manual entry
- Secure record-keeping
Best for: Businesses already using cloud accounting software.
Method 2: Lodging BAS Through a Registered Agent
What Registered BAS Agents Do
A registered BAS agent is certified to prepare and lodge your BAS with the ATO. They:
- Interpret GST laws for your business
- Prepare accurate activity statements
- Ensure you claim all available GST credits
- Lodge your BAS on your behalf
Why Choose an Agent?
Benefits include:
- More time: Agents typically receive extended deadlines
- Peace of mind: Agents reduce risk of penalties due to errors
- Custom advice: Agents help optimise your GST position
Things to Consider:
- You must authorise your agent with the ATO
- There are fees involved, but these are often offset by tax savings or time saved
Best for: Busy business owners, those with complex transactions, or anyone unsure about GST rules.
Method 3: Lodging a Paper BAS Form
Though the ATO encourages digital lodgment, paper forms are still available in some cases. You’ll usually receive one by mail if you haven’t set up digital lodgment preferences.
How It Works
- Fill out the form manually
- Mail it to the ATO at the address provided on the form
- Wait for postal confirmation and processing
Pros and Cons
Advantages:
- Familiarity for long-time business owners
- No digital setup required
Disadvantages:
- Slower processing times
- Higher risk of human error
- No instant confirmation
- Limited support resources
Best for: Businesses without access to reliable internet or who prefer paper-based records
Which BAS Lodgment Method Is Right for You?
Choosing the right BAS lodgment method depends on your:
- Comfort with digital tools
- Need for expert help
- Desire for efficiency vs familiarity
Quick guide:
- Go online if you want speed and convenience
- Use an agent if you want expertise and peace of mind
- Stick with paper only if you must
Key BAS Lodgment Deadlines (Quarterly)
Staying on top of your BAS due dates is just as important as choosing how to lodge. Standard deadlines for quarterly lodgers are:
- Q1 (Jul–Sep): 28 October
- Q2 (Oct–Dec): 28 February
- Q3 (Jan–Mar): 28 April
- Q4 (Apr–Jun): 28 July
Agents typically get an extra four weeks to lodge on your behalf, giving you more breathing room.
Final Thoughts: Choose a Lodgment Method That Works for You
No matter the size or complexity of your business, there’s a BAS lodgment method that can meet your needs. Online is the fastest and most cost-effective option. Agents offer tailored support and flexibility. Paper is on the way out but remains a fallback option.
The key is finding a method that matches your workflow, confidence level, and desire for oversight. And remember, getting it right not only keeps you compliant, but also gives you better visibility over your cash flow.
Still unsure? A qualified tax agent can guide you through setup and recommend the best path forward based on your business.
About The Author: Artur Osadchiy
Artur is a Certified Practising Accountant with over 30 years’ experience working as a trusted advisor to 600+ clients across Australia. Based in Melbourne, he started Tax Window with his wife Marina in 2009 and leads the firm’s tax and accounting team. In his free time, Artur enjoys watching the AFL (go Kangas!) and spending time with family.
Not sure where to start? Or already know what you need?
Book a meeting. Completely free, no preparation needed.
Talk through your situation with one of our senior accountants and get your questions answered. A quick, commitment free conversation, online or at our Bentleigh office.