What Happens If You Don’t Lodge Your Business Activity Statement on Time?

Missing the deadline for your Business Activity Statement (BAS) can cause stress, extra costs, and more paperwork for your business. The Australian Taxation Office (ATO) expects all businesses to lodge their Business Activity Statement (BAS) on time, whether you’re a sole trader, small business, or a larger company.

What Is a Business Activity Statement and Why Does It Matter?

A Business Activity Statement, often called a BAS, is a form that businesses use to report and pay several tax liabilities to the ATO. This includes Goods and Services Tax (GST), Pay As You Go (PAYG) instalments, PAYG withholding, and sometimes other taxes like wine equalisation tax, fuel tax credits, and fringe benefits tax. The BAS helps you report your business activity for a specific reporting period, which could be monthly, quarterly, or annually, depending on your GST turnover and other eligibility criteria.

Completing your BAS accurately and on time is essential. It shows you’re meeting your tax obligations and helps you avoid unnecessary penalties and interest. Whether you lodge your BAS online, by paper form, or through a registered tax or BAS agent, the key is to stay organised and submit your activity statement by the due date for your reporting period.

Understanding BAS Lodgement Deadlines and Reporting Periods

Staying on top of your BAS lodgement due dates is a big part of managing your business tax. The ATO sets different due dates based on your reporting period and business size. Most small businesses with a GST turnover under $20 million report quarterly, while larger businesses may need to report monthly. Some businesses with lower turnover can choose to report annually if they meet the eligibility criteria.

If you lodge your BAS online, you often get a little extra time compared to using a paper form. Working with a BAS agent or registered tax agent can also give you access to extended lodgement programs. No matter how you lodge, it’s important to remember that the due date is the deadline for both lodging your BAS and making any necessary payment.

If your business is required to report PAYG instalments, Fuel Tax Credits, or other taxes, these are included in your BAS or, in some cases, in a separate instalment activity statement. Each form has its own due dates and reporting requirements.

What Happens If You Miss the BAS Due Date?

Missing your BAS due date can have several consequences. The ATO may apply a Failure to Lodge (FTL) penalty, which is calculated based on your business size and how long your activity statement is overdue. For small businesses, the penalty starts at one penalty unit for each 28-day period the BAS is late, up to a maximum of five units. The value of a penalty unit is set by the government and is reviewed regularly.

If your business is medium or large, the penalty increases because it’s multiplied by two or five, depending on your annual income or GST turnover. For significant global entities, the penalty is much higher. The ATO usually warns businesses before applying a penalty, but if you regularly miss BAS lodgement due dates, you’re more likely to face these charges.

Additional Costs: General Interest Charge and More Frequent Reporting

If you don’t pay the correct amount by the BAS due date, the ATO will also apply a General Interest Charge (GIC) to the unpaid amount. This interest compounds daily, so the longer you delay your payment, the more you’ll owe. The GIC is tax-deductible, but it’s still an extra cost that can affect your cash flow.

Businesses with a history of late BAS lodgement or payment may also be required to report monthly instead of quarterly. This means preparing and lodging activity statements more often, increasing your administrative workload and the risk of further penalties if you fall behind again.

The Impact on Company Directors and Personal Liability

If a company lodges its BAS late or does not pay required amounts, directors may become personally responsible for unpaid PAYG withholding, net GST, and Superannuation Guarantee. The Australian Taxation Office can issue a Director Penalty Notice, which means directors must pay these debts if the company does not. The ATO may then recover the amounts directly from directors through legal action or by collecting funds from bank accounts.

To avoid costly mistakes and stay compliant with the latest superannuation laws, read our article on the Super Guarantee Rate for 2025.

How to Avoid Penalties and Stay Organised

The best way to avoid penalties and interest is to lodge your BAS on time and pay the correct amount. Here are a few tips to help you stay organised:

• Set reminders for BAS lodgement due dates and reporting periods.
• Use BAS online services for faster and more flexible lodgement.
• Work with a registered tax or BAS agent who can help you prepare, lodge, and pay your BAS correctly and on time.
• Keep your bookkeeping up to date so you can complete your activity statement accurately.
• If you’re struggling to meet a due date, contact the ATO before the deadline to discuss your options.

If you do receive a penalty, you can request a remission if you have a good compliance history or special circumstances that made it difficult to lodge your BAS on time.

What to Do If You Miss a BAS Deadline

If you realise you’ve missed a BAS due date, act quickly. Lodge your BAS as soon as possible, even if you can’t pay the full amount straight away. The ATO is more likely to reduce or waive penalties if you take prompt action and communicate with them early. If you need help with your BAS lodgement, a registered tax or BAS agent can guide you through the process and help you get back on track.

Conclusion

Lodging your Business Activity Statement on time is an important part of meeting your tax obligations as a business owner in Australia. Late lodgement can lead to penalties, interest charges, and extra reporting requirements, making it harder to manage your business finances. By staying organised, using the right tools, and seeking support from a registered tax or BAS agent, you can avoid the stress and cost of missing a BAS deadline.

Take a moment today to check your upcoming BAS due dates and make sure your records are up to date. If you’re unsure about your reporting period, eligibility criteria, or how to complete your BAS, reach out for help. Staying on top of your BAS lodgement is not just about compliance-it’s about keeping your business running smoothly and confidently into the next financial year.