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BAS & IAS Lodgements with CBK Business Solutions

CBK Business Solutions is dedicated to simplifying the financial processes for small to medium businesses, ensuring that your focus remains on growth and success. Our expertise in BAS & IAS Lodgements allows us to offer comprehensive support for BAS (Business Activity Statement) and IAS (Instalment Activity Statement) lodgements, crucial components of your business’s financial health.

About BAS & IAS Lodgements

Business Activity Statements (BAS) and Instalment Activity Statements (IAS) are essential components of meeting your tax obligations as a business in Australia. Whether you’re registered for GST or required to report PAYG withholding or income tax instalments, accurate and timely lodgements are a must to remain compliant with the ATO.

At CBKBS, we take the stress out of compliance when submitting your BAS and IAS lodgements. As registered BAS agents, we work with businesses across a range of industries, ensuring that all BAS & IAS lodgements are submitted correctly and on time — so you can focus on running your business with confidence.

Why Choose CBK Business Solutions for BAS and IAS Lodgements?

Expertise and Accuracy

Our team of experienced bookkeepers is well-versed in the intricacies of BAS and IAS requirements. We ensure that all statements are prepared accurately, minimizing the risk of errors and potential penalties.

Time-Saving Solutions

Managing BAS and IAS can be time-consuming. By entrusting these tasks to CBK Business Solutions, you free up valuable time to concentrate on other critical aspects of your business.

Compliance Assurance

Staying compliant with the Australian Taxation Office (ATO) regulations is essential. We keep abreast of the latest tax laws and ensure that your lodgements are submitted on time, every time.

Tailored Services

We understand that every business is unique. Our services are customized to meet the specific needs of your business, providing you with the most relevant and effective solutions.

Cost Effective

Outsourcing your BAS and IAS lodgements to CBK Business Solutions can be more cost-effective than handling them in-house, especially when considering the potential costs of errors and non-compliance.

Peace of Mind

With CBK Business Solutions handling your BAS and IAS lodgements, you can have peace of mind knowing that your financial obligations are in expert hands.

Our Services Include

We offer a full suite of BAS and IAS lodgement support services to keep your business compliant and stress-free:

  • Preparation and lodgement of Business Activity Statements (monthly, quarterly, or annually)
  • Preparation and lodgement of Instalment Activity Statements
  • Accurate GST calculations
  • PAYG withholding and PAYG instalments reporting
  • Reconciliation of accounts before lodgement
  • Liaison with the ATO on your behalf
  • Business Activity Statement amendments and corrections if needed
  • Notifications of due dates and reminders


Our team ensures that everything is accounted for with your BAS & IAS lodgements — accurately, transparently, and efficiently.

Challenges of BAS and IAS Compliance

Many business owners find BAS and IAS lodgements overwhelming due to:

  • Complex GST and PAYG rules
  • Constantly changing reporting deadlines
  • Risk of penalties for late or incorrect lodgement
  • Time-consuming data entry and reconciliation
  • Difficulty understanding ATO correspondence


With our BAS & IAS lodgement services, you’ll never have to worry about staying on top of it all. We handle the compliance, so you don’t have to.

IAS & BAS Lodgement Services Features

Our IAS and BAS lodgement services come with practical, value-driven features:

  • Registered BAS Agents
  • BAS & IAS lodgements via ATO portal for speed and accuracy
  • Xero, MYOB, and QuickBooks integration
  • Real-time reporting and account reconciliation
  • Automated reminders and compliance alerts
  • Support for quarterly, monthly, and annual lodgements
  • ATO correspondence management

We ensure your Business Activity Statement and Instalment Activity Statement reporting obligations are met without the last-minute rush.

BAS & IAS Lodgement Due Dates

Understanding your reporting schedule is key to compliance. Here are the ATO deadlines:

Quarterly BAS Lodgements

Q1 (Jul–Sep): Due 28 October
Q2 (Oct–Dec): Due 28 February
Q3 (Jan–Mar): Due 28 April
Q4 (Apr–Jun): Due 28 July

If you lodge online, you may be eligible for an extra 2 weeks to lodge and pay your quarterly BAS.

Monthly BAS & IAS Lodgements

Due on the 21st of the following month

Annual BAS Lodgement (for voluntarily registered businesses)

Due by 31 October (or 28 February if lodging through a registered agent)

Note: Deadlines may vary depending on your agent’s lodgement program or special ATO arrangements.

Benefits of BAS & IAS Lodgement Services

Partnering with CBKBS for your BAS and IAS reporting means:

  • Reduced risk of ATO penalties or audits
  • Accurate, reconciled accounts for lodgement
  • Time back in your day to focus on business operations
  • Confidence knowing your reporting is fully compliant
  • Ongoing support and expert guidance when tax rules change
  • Stress-free communication with the ATO, handled by us


We help you stay compliant and ahead of schedule.

How We Work

Our BAS and IAS lodgement services are efficient, supportive, and tailored to your business:

  1. Initial Review
    We assess your current setup, software, and reporting needs.
  2. Reconciliation and Preparation
    Our team reviews all relevant accounts to ensure your figures are accurate before lodgement.
  3. IAS & BAS Lodgement and Reporting
    We submit your BAS or IAS to the ATO and provide a clear summary for your records.
  4. Ongoing Support
    We send timely reminders, handle ATO correspondence, and keep your reporting up to date each period.

We Can Also Help With

In addition to BAS and IAS lodgement services, CBKBS provides a range of integrated financial services to support your business, including:

Bookkeeping Services

Stay organised and compliant with regular transaction management and account reconciliation

Payroll Management

Ensure timely, accurate payroll and superannuation compliance

Cash Flow Management

Monitor, plan, and improve your business’s financial position

Debt Management

Help you track, manage, and recover outstanding payments to improve cash flow.

Accounting Software Support

Set up, optimise, and support your use of Xero, MYOB, or QuickBooks.

EOFY Adjustments

Finalise your books with accurate year-end journals and reconciliations for compliance.

Budgeting

Develop practical business budgets to monitor performance and support informed planning.

Startup Support

Get your business set up with strong financial systems and registrations

Business Advisory

Gain strategic insight into profitability, budgeting, and growth

Whether you’re a sole trader or managing a growing team, we offer end-to-end support for your financial operations.

Frequently Asked Questions

What’s the difference between Business Activity Statements (BAS) and Instalment Activity Statements (IAS)?

A Business Activity Statement (BAS) lodgement is used to report and pay GST, PAYG withholding, PAYG instalments, and other taxes.

An Instalment Activity Statement (IAS) lodgement is typically used by businesses not registered for GST and is primarily for reporting PAYG instalments or PAYG withholding. We can help determine which one applies to your business and ensure all BAS & IAS lodgements are accurate and timely.

Your BAS lodgement frequency depends on your business size and ATO registration. Most small to medium businesses lodge quarterly, but if your turnover is higher or your GST liabilities are significant, you may be required to lodge monthly. With our IAS & BAS lodgement services, we assess your situation and handle the appropriate schedule for you.

Missing an IAS or BAS lodgement can result in late lodgement penalties, general interest charges, or increased scrutiny from the ATO. With our IAS & BAS lodgement services, we send timely reminders and manage your lodgements to keep your business compliant and avoid unnecessary penalties.

Yes. If you’ve made an error on a past BAS or IAS, we can help amend it as part of our BAS & IAS lodgement services. As registered BAS agents, we’re authorised to correct past statements and communicate directly with the ATO on your behalf to resolve any issues.

Absolutely. We provide both standalone BAS/IAS lodgement services and bundled packages that include bookkeeping, payroll, and cash flow management. This ensures all your financial reporting is streamlined and managed in one place.