Understanding Business Activity Statements (BAS)

Understanding Business Activity Statements (BAS)


  • Businesses in Australia with an annual turnover of at least $75,000 need to lodge a business activity statement (BAS) for reporting and taxation purposes.
  • Your BAS statement is to report and pay for GST, PAYG instalments, PAYG withholding tax, FBT and other taxes.
  • BAS statements can be prepared by a bookkeeper, accountant or yourself and are due either monthly or quarterly.
  • Use this guide on BAS statements for dummies to learn how to prepare, calculate and lodge BAS statements.

business activity statement

What Is a Business Activity Statement (BAS)?

A business activity statement (BAS) is a business tax reporting requirement issued by the Australian Taxation Office (ATO) on either a monthly or quarterly basis. BAS is used for the following purposes:

  • reporting and paying goods and services tax (GST)
  • pay as you go (PAYG) instalments
  • PAYG withholding tax and other tax obligations such as FBT instalments
  • Luxury Car Tax
  • Wine Equalisation Tax and Fuel Tax Credits

Do I Need to Lodge a BAS Statement?

If your business has an annual turnover of $75,000, you are required to register for GST and lodge a BAS statement. After registering for GST, the ATO will automatically send you a business activity statement when it’s time to lodge your BAS.

Common Acronyms Found in BAS Statements 

It's useful to know some of the common acronyms you'll find in your BAS statement:

  • ATO = Australian Taxation Office
  • BAS = Business Activity Statement
  • GST = Goods and Services Tax
  • PAYGW = Pay as you go Withholding
  • FBT = Fringe Benefits Tax
  • LCT = Luxury Car Tax
  • WET = Wine Equalisation Tax
  • FTC = Fuel Tax Credits
  • GST Registration

As a business owner, you are responsible for ensuring you meet all your business’s GST obligations. A business is required to register for GST if it has an annual GST turnover of $75,000 or more a year, or if they think they will reach this annual threshold.

Once your business is registered for GST, you must include GST in the sale price of your goods. But there are some exceptions. Some goods are GST-free including most of the basic foods like bread and milk, some education courses, and some medical products and services.

If your business falls into any of these categories, it’s best to speak to your accountant for a clear strategy on handling such items.

How to Prepare Your BAS

Preparing your BAS for the first time can be time-consuming. Follow these steps to ensure you prepare a BAS correctly. 

1. Know Your GST Reporting and Payment Period

All businesses registered for GST use the business activity statement to complete their GST returns. Your GST reporting and payment period is shown on your business activity statement and will be monthly, quarterly or annually.

2. Choose Between Accrual vs Non-Accrual Reporting 

When you register for GST you need to select whether you will report on an accruals basis or a cash basis. The accruals basis means that you will be reporting your GST when you prepare your sales invoice or receive your expense invoice, regardless of whether you have actually received, or made, a payment for the invoice.

Non-accrual or cash basis means that you report your GST based on when cash is received or paid out, regardless of when the transaction occurred.

How Is BAS Calculated?

There are several ways you can calculate your BAS: 

  1. Calculate and report GST quarterly
  2. Calculate GST quarterly and report annually
  3. Pay GST instalment amount and report annually
  4. Pay as you go (PAYG) income tax instalment

1. Calculate and report GST quarterly

Available to all quarterly businesses. Calculate and report all the GST labels in your business activity statement and pay your actual GST amounts quarterly.

2. Calculate GST quarterly and report annually

Available to all businesses with a turnover of less than $20 million. Calculate and pay your actual GST amounts quarterly but report only the GST collected and paid and total sales for each quarter.

3. Pay GST instalment amount and report annually

Available to all businesses with a turnover of $2 million or less, which allows you to pay an ATO determined GST instalment amount quarterly.

For GST reporting options 2 and 3, an annual GST reconciliation is required to be completed and lodged with the ATO.

4. Pay as you go (PAYG) income tax instalment

PAYG instalments require you to pay incremental amounts towards your expected end of year income tax liability. To make sure your income tax assessment takes into account the instalments you've paid through the year, you need to finalise your PAYG instalments before you lodge your income tax return.

How to Pay Your PAYG Instalments 

Generally, you can choose between two options to pay your PAYG instalments, which will apply for the remainder of the income year:

Option 1: Installment Amount

A pre-determined amount calculated by the ATO.

Option 2: Installment Rate

Calculate your PAYG instalment amount based on your actual income multiplied by a rate that the ATO provides. Great for seasonal businesses where income can fluctuate.

If you aren’t registered for any of the other items on a business activity statement (such as GST or PAYGW), but you are required to pay a tax instalment, then the ATO will send you an instalment activity statement (IAS) rather than a business activity statement (BAS).

If you don't want to vary the instalment amount shown on your instalment notice, you only need to pay the amount shown by the due date and you don't need to lodge the notice.

Pay as You Go (PAYG) Tax Withheld

Under PAYG withholding, businesses must withhold tax from certain payments made to others, which is then paid to the ATO. These include:

  • payments to employees, company directors and officeholders
  • payments to workers under labour-hire agreements
  • payments under voluntary agreements
  • payments where an Australian business number (ABN) has not been quoted in relation to a supply

You must report any withheld amounts in the PAYG tax withheld section of your business activity statement (BAS).

Fringe Benefits Tax (FBT) Instalment

Fringe benefits tax (FBT) is a tax that employers pay on certain benefits they provide to their employees. The benefits may be in addition to, or part of, their salary or wages package. FBT is separate from income tax.

If you are required to pay FBT, then FBT instalments (a pre-determined amount calculated by the ATO) are payable as part of your business activity statement. 

Luxury Car Tax (LCT)

Luxury car tax (LCT) applies to all supplies and importations of luxury cars where the value (including GST) exceeds the LCT threshold. The value generally also includes the price paid for accessories and modifications made to the car before delivery.

LCT Thresholds

LTC threshold (as of June 2020) are as follows:

Financial year

Fuel-efficient vehicles

Other vehicles


2019–20 $75,526



$75,526 $66,331
2017–18 $75,526


2016–17 $75,526



$75,375 $63,184


$75,375 $61,884

Wine Equalisation Tax (WET)

Wine equalisation tax (WET) only applies to wine manufacturers, wholesalers, and importers. Retailers do not have a WET liability unless they make wholesale sales or bottle their own wine.

WET is a tax based on the value of wine. WET applies at 29% of the value of the wine at the last wholesale sale (before adding GST).

Fuel Tax Credits (FTC)

Fuel tax credits provide businesses with a credit for the fuel tax (excise or customs duty) included in the price of fuel they use in machinery, plant equipment and heavy vehicles for business purposes. You must be registered with the ATO for GST and Fuel Tax Credits to make a claim.

How to Lodge Your BAS

If you are using the online services for individuals and are registered via the Business Portal you can access and complete your BAS online. If you are not registered, your business activity statement will be sent to you in the mail and you lodge it via post. You can also submit your business activity statement through a registered tax agent or BAS agent.

What Are the BAS Statement Due Dates?

Your BAS statement due date is displayed on your BAS statement. Your BAS statement is issued by the ATO approximately two weeks before the end of a business’s reporting period. Once you receive your business activity statement, fill it out, lodge it with the ATO and pay any money you owe by the due date. The due dates depend on whether you lodge your BAS monthly or quarterly.

Monthly Reporting

The due date for your monthly business activity statement is usually on the 21st day of the following month. If the due date is on a weekend or public holiday, you can lodge your form and make any payment due on the next business day.

Quarterly Reporting


Due date - paper

Due date - online
1 - July, August and September 28 October 11 November
2 - October, November and December 28 February 28 February
3 - January, February and March 28 April 12 May
4 - April, May and June 28 July 11 August

Your Business Activity Statement can now be simpler under a new initiative called Simpler BAS, for businesses with a turnover less than $10 million.

Many small business owners decide to delegate their BAS statements to their bookkeeper or hire a registered tax accountant to take care of monthly or quarterly BAS reporting. This can take the weight off and free up your time to manage other important areas of your business,

Editor's Update 06/07/20: 

Thanks for reading our article by Craig Pisani, Director at 452 Partners. We hope it has helped you better understand business activity statements. Members at SavvySME have additional questions on the subject, so we have answered some of these FAQs below.

Craig Pisani

Director at 542 Partners

Craig Pisani is a Chartered Accountant and the Director of 542 Partners. Craig recognises how effective businesses operate and advises on all areas of accounting and taxation, including acquisitions and sales, start-ups, tax-effective group structuring and business systems reviews. While Craig’s expertise is in accounting and taxation compliance, his advisory skills extend to superannuation, business succession planning and personal wealth creation.

Comments (2)
Aishah Mustapha

Aishah Mustapha, Content Marketer at

If you’re not keen on doing it yourself, you can hire someone to do it to save you all the hassle. A bookkeeper can help you prepare and lodge business activity statements (BAS) but they must have a BAS agent qualification. BAS agents are registered with the Tax Practitioners Board and are authorised to work on BAS statements. The cost depends on the complexity of your business and how often you lodge it. As a ball park figure, it should cost around $200 to prepare and submit your BAS each quarter. You can get quotes and hire bookkeepers in Australia on SavvySME.

Justine Garcia

Justine Garcia, Community Manager at

This is a great concise explanation of what is a bas statement. I’d like to add that the ATO has webinars on a number of topics for new business owners, including GST, tax basics, home-based business and BAS statements. Just go through it online whenever you have time. https://www.ato.gov.au/general/webinars/small-business-webinars/?sbnquicklink