BAS Preparation & Lodgement by a Registered BAS Agent

Wintton provides BAS preparation and lodgement services as a registered BAS Agent. We prepare, review and lodge your BAS accurately, handling the compliance and reporting so you don’t have to second-guess the details.

If your records aren’t quite ready, we can clean things up first. The goal is simple — lodge correctly, stay compliant, and move forward with confidence.

Bookkeeper doing her work
Bookkeeper doing her work

Registered
BAS Agent 
Support

Good bookkeeping isn’t just about entering numbers. It’s about keeping your records accurate, up to date and usable.

Wintton supports businesses with bookkeeping that creates clarity, reduces stress and supports better decision-making. We work quietly in the background, making sure your financial records are handled properly and consistently.

What Our
BAS Lodgement Service Covers

Our BAS services are designed to remove uncertainty and reduce risk. Everything is checked carefully before lodgement, so there are no surprises later.

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BAS preparation and review

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GST calculations and reporting

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PAYG withholding

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PAYG instalments

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BAS lodgement with the ATO

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Clear explanations where needed

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Who This
Service Is For

This service suits businesses of all sizes that want BAS handled correctly and clearly, including:

  • Sole traders and small businesses
  • Growing businesses with regular BAS obligations
  • Businesses lodging monthly or quarterly BAS
  • Businesses switching from another bookkeeper


You don’t need to have everything perfect before reaching out.

If Your BAS or Books Are Behind

If your BAS is overdue, incomplete or you’re unsure your figures are correct, you’re not alone. This is common, and it can be fixed.

Wintton can review your records, clean up what’s needed, and prepare your BAS once the numbers are accurate. We take a practical, non-judgemental approach and focus on getting things back on track properly.

Man and Women loving there bookkeeping team
Man and Women loving there bookkeeping team

Working With Your Accounting Software

We prepare and lodge BAS using your existing systems, including Xero, MYOB and QuickBooks. If your software setup needs attention, we’ll make sure it’s working properly before lodgement so your reporting is accurate and consistent.

Frequently Asked Questions

  • Do you need to be registered to lodge BAS?

    Yes. Only a registered BAS Agent is authorised to prepare and lodge BAS on behalf of a business. Internal bookkeepers can lodge BAS without being a registered BAS agent.

  • Can you lodge BAS if my books aren’t up to date?

    Yes. We can clean up your books first if needed, then prepare and lodge your BAS once everything is accurate.

  • Do you handle both quarterly and monthly BAS?

    Yes. We support both quarterly and monthly BAS lodgement.

  • Do you deal directly with the ATO?

    Yes. As a registered BAS Agent, we lodge directly with the ATO and follow current compliance requirements.