Staying on top of BAS due dates is a regular part of running a business registered for GST. Whether you lodge monthly or quarterly, missing a deadline can lead to penalties and added pressure when things are already busy. But have you considered the benefits of working with a registered tax agent? Tax agent BAS due dates offer extended time to lodge, along with support that can make compliance easier and more accurate.
In this article, we’ll break down the key dates, explain how tax agent lodgements work, and help you decide what’s right for your business.
Standard BAS Due Dates For Self-Lodgers
If you lodge your BAS directly with the ATO (without using a tax agent), you must meet the standard deadlines, which are strict and enforced.
Monthly BAS Deadlines
- Due on the 21st of the following month
(e.g. March BAS is due by 21 April)
Quarterly BAS Deadlines
- Q1 (Jul–Sep): 28 October
- Q2 (Oct–Dec): 28 February
- Q3 (Jan–Mar): 28 April
- Q4 (Apr–Jun): 28 July
These bas lodgment dates apply to businesses managing their BAS submissions in-house. If you’re often scrambling to meet deadlines, it might be time to rethink your process.
How Tax Agent BAS Due Dates Work
When you lodge your BAS through a registered tax or BAS agent, you may qualify for extended deadlines. These tax agent BAS due dates allow more time to finalise your books and lodge accurately without the rush.
Quarterly BAS Due Dates For Tax Agents
- Q1 (Jul–Sep): 25 November
- Q2 (Oct–Dec): 28 February (no extension)
- Q3 (Jan–Mar): 26 May
- Q4 (Apr–Jun): 25 August
These extended bas due dates tax agent schedules apply as long as your business is registered with the agent and listed with the ATO before the cutoff. If you frequently need extra time or help preparing your figures, using a tax agent may be the right move.
Why Use A Tax Agent For Your BAS?
Knowing the tax agent BAS due dates is one thing—taking advantage of them is another. A registered tax agent brings structure, reliability, and expertise to the table.
Benefits Of Lodging Through A Tax Agent
- Longer lodgement windows – reduce pressure during peak business periods
- Expert advice – ensure accurate figures and maximise deductions
- ATO representation – your agent can deal with the ATO on your behalf
- Reduced penalties – better accuracy means fewer mistakes and missed deadlines
If you’re tired of scrambling to meet deadlines, or simply want things done right, Book A Call and explore how Petros Chartered Accountants can support your business.
What Happens If You Miss A BAS Deadline?
Failing to lodge on time—especially without a tax agent—can result in:
- Failure to lodge (FTL) penalties
- Interest charges
- Delayed GST refunds
- ATO follow-ups or audits
Knowing your tax agent BAS due dates and staying ahead of them helps reduce risk and avoid disruption to your business cash flow.
How To Stay On Top Of Your BAS Obligations
Staying organised is key to avoiding late lodgements and the stress that comes with them. Whether you manage BAS yourself or work with a tax agent, having a simple system in place can make the process far more manageable each quarter.
Use Calendar Reminders
Set up reminders based on whether you lodge monthly or quarterly. If you’re using a tax agent, confirm which tax agent BAS due dates apply to your situation.
Keep Your Bookkeeping Current
Having clean and up-to-date records makes it easier to complete your BAS early. If you’re falling behind, outsourcing might be worth considering.
Don’t Ignore ATO Correspondence
If you receive a BAS reminder or overdue notice, act quickly or contact your tax agent to discuss your options.
Looking for help keeping things organised? Our BAS Services are tailored to Perth businesses that want hassle-free compliance.
How To Lodge Your BAS
There are a few ways to lodge your BAS, depending on how your business is set up and whether you’re working with a tax agent.
Lodging Yourself
If you’re managing your own BAS, you can lodge:
- Online via the ATO Business Portal or myGov (if you’re a sole trader)
- Using accounting software that’s linked to the ATO
- By mailing a paper BAS form (still an option, but unless you’re living in the dark ages, it’s best to lodge online)
Just make sure you know your BAS lodgment dates and keep records to support what you’ve reported.
Lodging Through A Tax Agent
When you lodge through a registered tax or BAS agent, they’ll handle the submission for you—either through their own software or an ATO-approved platform. This also unlocks access to tax agent BAS due dates, which give you more time to lodge and pay.
What Your Tax Agent Will Need To Lodge Your BAS
To ensure your BAS is accurate and submitted on time, your tax agent will need up-to-date financial records and a few key details.
Documents And Information To Provide:
- Access to your accounting software or financial reports
- Records of sales and purchases, including GST collected and paid
- PAYG withholding figures (if you employ staff)
- Any previous BAS lodgement issues or ATO correspondence
If you’re not sure whether your records are in order, your agent can help clean things up first. At Petros Chartered Accountants, we often assist clients with getting their books in shape before the next tax agent BAS due date.
Who Should Consider Using A Tax Agent?
Using a tax agent isn’t just for large businesses. Many sole traders and small business owners benefit from having help with BAS.
Common Reasons To Work With A Tax Agent
- Your business is growing and you can’t afford late penalties
- You don’t have time to double-check GST figures each quarter
- You need more time to lodge than standard deadlines allow
- You want accurate, worry-free submissions every time
Petros Chartered Accountants helps clients across a wide range of industries with Business Taxation and Compliance and Business Advisory Services, ensuring you meet every important due date for BAS.
Take Control Of Your BAS Lodgements With Expert Support
Keeping up with tax agent BAS due dates is essential if you want to avoid penalties, protect cash flow, and stay in the ATO’s good books. Whether you’re handling everything yourself or ready to hand it over to someone who understands the process inside out, the right support can make all the difference.
If you’re looking for reliable BAS lodgement services and tailored tax advice from someone who gets to know your business, we’re ready to help.
Book A Call with Petros Chartered Accountants to take the next step.
FAQs
Do tax agent BAS due dates apply to monthly lodgements?
No, tax agent BAS due dates only apply to quarterly lodgements. Monthly BAS due dates remain fixed (usually the 21st of the following month), even if you use a registered tax agent. However, your agent can still assist with accurate and timely submissions to help you avoid penalties.
What is a BAS and who needs to lodge it?
A Business Activity Statement (BAS) is a reporting form submitted to the ATO to report GST, PAYG withholding, and other tax obligations. If your business is registered for GST, you need to lodge a BAS—usually quarterly or monthly.
What are tax agent BAS due dates?
These are extended deadlines for quarterly BAS lodgements that apply when your BAS is lodged through a registered tax or BAS agent. They provide extra time to submit without penalties.
Can I access tax agent BAS due dates if I register late?
Only if your tax agent adds you to their ATO client list by the required date. It’s best to confirm your eligibility early.
What are the advantages of meeting tax agent BAS due dates early?
Meeting your tax agent BAS due dates early gives you more time to correct errors, manage cash flow, and get your refund faster (if applicable). It also means less last-minute stress and a better overall relationship with the ATO.
What if I’ve already missed a lodgement?
Contact a tax agent immediately. They can help submit it as soon as possible and reduce the risk of penalties or interest charges.
Is a tax agent worth it for small businesses?
Yes, especially if you want to meet deadlines, improve accuracy, and avoid surprises from the ATO. If you don’t want to worry about missing a BAS deadline again, using a tax agent is a smart step forward.
How do I make sure I qualify for tax agent BAS due dates?
To qualify for extended tax agent BAS due dates, you must be added to your agent’s ATO client list before the original lodgement deadline. Your agent will take care of this process, but it’s important to engage them as early as possible each quarter.
Does Petros Chartered Accountants offer more than BAS lodgement support?
Yes. While understanding tax agent BAS due dates is essential, it’s only one piece of your tax and compliance strategy. We also assist clients with:
• Business Setup and Structuring
• SMSF Services
• Tax Planning and Advisory
Whether you’re a sole trader, tradie, investor, or managing multiple entities, our team helps simplify compliance and supports long-term business success.
