Prepare your records before you start
Gather sales invoices, purchase receipts, bank statements, and any GST-related adjustments so your bookkeeping is complete and traceable. If you use bas lodgement accounting software, export reports that show totals by account and confirm they match your underlying transactions. This step reduces errors and prevents delays caused by missing information.
Next, review your GST treatment for key activities such as taxable supplies, GST-free items, and input tax credits. Check whether any expenses were partially business and partially private, since mixed-use costs often need adjustments. For employers, ensure payroll records and super contributions are categorised correctly because they can affect the figures used in your BAS. If you’ve recently changed systems or processes, do a quick reconciliation to confirm your data is consistent.
Calculate figures and cross-check against your books
When you calculate your BAS, work from your bookkeeping reports rather than guessing from memory. Start by confirming your GST totals for sales and purchases, including any credit notes and refunds that should be reflected in the period. If you have multiple Online Bookkeeping Services Perth business accounts or branches, verify the figures are grouped correctly and not double-counted. A practical approach is to list each GST category and the report it comes from, so the logic is easy to audit later.
Then perform cross-checks to catch common issues early. Compare turnover figures against bank deposits and payment processor statements, allowing for timing differences where appropriate. Validate that your BAS figures align with your general ledger balances and that any adjustments are documented. If something doesn’t tie out, don’t force the submission—identify the transaction causing the variance and correct the underlying record first.
Use efficient BAS preparation and lodgement workflows
If you want faster turnaround, set up a repeatable workflow rather than starting from scratch each time. Create a checklist for the records you need, the reports you’ll export, and the review steps you’ll complete before lodging. Assign responsibility for each task, such as reconciliation, transaction review, and final approval of figures. This structure reduces rework and helps maintain consistent accuracy across BAS cycles.
A professional workflow usually includes categorisation checks, reconciliation support, and clear documentation of GST adjustments. You can also benefit from secure data handling so your records remain protected while your team focuses on running the business. For complex situations—like multiple trading entities, fluctuating GST turnover, or frequent refunds—expert support can prevent errors that may trigger follow-up questions.
Conclusion
When records are complete, GST treatment is confirmed, and figures are cross-checked against your books, submission becomes far less stressful and far more predictable. If you’re balancing growth with compliance, outsourcing bookkeeping and BAS preparation can free up time while improving confidence in your numbers. Books & Balance supports small businesses with professional BAS preparation and timely lodgement, helping ensure accuracy against ATO expectations. By using efficient workflows and practical document handling, you can reduce avoidable errors and keep your compliance on track.
