Meta description: Prepare your Australian small business for the 30 September 2026 quarter end with five practical steps covering cashflow, BAS, super, systems and profit.

I’ll be honest: quarter end can still trigger that familiar knot in my stomach.

Even after years of working with small and medium-sized businesses, I know the feeling of looking at an inbox full of unpaid invoices, an accounting file that needs attention and a calendar crowded with compliance dates. It’s easy to wonder whether you’ve missed something important.

But here’s the thing: financial stress often comes from a lack of visibility, not a lack of capability.

The final week of September is not the time to panic. It’s a useful checkpoint. The quarter ending 30 September 2026 closes the first quarter of the 2026–27 financial year, and it gives you a chance to listen to the tales your cashflow is telling before October compliance deadlines arrive.

For most Australian businesses reporting quarterly, the key date is 28 October 2026 for both the September quarter BAS and employee superannuation contributions. You can check the ATO’s BAS due dates, but don’t leave your preparation until the deadline week.

Here are five things I’d lock in now.

1. Close the quarter with clean, tax-ready books

A quarter-end review starts with the basics. Before you make big decisions about hiring, spending or growth, make sure the numbers you’re looking at are trustworthy.

SMART objective: Complete your September bookkeeping review by Friday, 2 October 2026, so you have a reliable starting point for your October plan.

Work through this checklist:

• Reconcile every business bank and credit card account.
• Match outstanding transactions to invoices, bills and receipts.
• Review unpaid customer invoices and follow up overdue accounts.
• Check that recurring subscriptions and software costs are still necessary.
• Confirm payroll, leave and superannuation liabilities are recorded correctly.
• Review GST-coded transactions before preparing your BAS.

This is where bookkeeping for small business should do more than record history. Your books should help you understand what is happening now.

Are your sales growing but your bank balance shrinking? Are expenses rising faster than revenue? Are you carrying too much work-in-progress? Clean records help reveal the answers.

For businesses that need consistent support, profit focused bookkeeping can turn routine reconciliations and reporting into useful decision-making information. Immaculate books are not just about tax time. They help you protect your time, your cash and your peace of mind.

2. Build a 13-week cashflow plan before October arrives

Your bank balance tells you what has already happened. A cashflow forecast helps you prepare for what is coming next.

SMART objective: Prepare and review a rolling 13-week cashflow forecast by 30 September, then update it weekly throughout October.

Include:

• Expected customer payments and realistic payment dates.
• Payroll and contractor payments.
• Rent, software, insurance and loan repayments.
• BAS, PAYG withholding and superannuation commitments.
• Planned equipment purchases or tax payments.
• A minimum cash buffer for unexpected costs.

This is especially important if your revenue is uneven.

For a creative agency, a project may be profitable on paper but still create a cash squeeze if the next milestone payment is delayed. Make sure your forecast reflects actual contract payment terms, freelancer costs and project timing. Reviewing estimated versus actual hours can also highlight scope creep before it eats into your margin.

For building and construction businesses, map progress claims, supplier invoices, subcontractor payments and retention amounts. A busy pipeline does not always mean healthy cashflow.

For hair and beauty salons, look at booking patterns, wages, product purchases and seasonal demand. For HR and recruitment agencies, track the timing gap between placing a candidate, invoicing a client and receiving payment.

And if you run a medical or allied health practice, separate recurring clinical revenue from one-off equipment, staffing or fit-out expenses. This gives you a clearer view of the cash needed to keep delivering excellent care.

Good cashflow planning for small business is not about predicting the future perfectly. It’s about spotting pressure points early enough to act.

3. Fix one financial system before it becomes a bigger problem

Quarter end is a useful time to ask a slightly uncomfortable question: where is your business still relying on manual work?

If your team is downloading bank statements, chasing receipts through text messages, re-entering invoice information or maintaining separate spreadsheets, your systems may be quietly draining time and creating errors.

SMART objective: Identify your three biggest manual finance tasks by 30 September and automate or redesign at least one by 31 October 2026.

Start with a simple systems audit:

1. List every step from receiving a bill to paying it.
2. Note where information is manually copied or entered.
3. Identify approvals that are delayed or unclear.
4. Check whether your accounting, payroll, invoicing and receipt tools integrate.
5. Create one documented workflow that another team member can follow.

This is the practical side of systems consulting. It is not about buying more software for the sake of it. It is about designing a cleaner path from transaction to insight.

A creative agency might connect time tracking, project management, invoicing and accounting so job margins are easier to review. A medical practice may benefit from a tighter workflow between payroll, rostering and financial reporting. A construction company may need clearer purchase order and subcontractor approval processes.

The best system is the one your team will actually use.

If this feels too tangled to tackle alone, our systems consulting approach can help you map the process, remove unnecessary admin and build practical workflows around your business.

4. Prepare your BAS and superannuation obligations early

October compliance deadlines have a habit of arriving faster than expected.

For businesses reporting quarterly, the September quarter BAS generally covers 1 July to 30 September 2026 and is due on 28 October 2026 under the standard deadline. Employee superannuation contributions for the quarter are also due by 28 October 2026.

SMART objective: Have your September quarter records ready for review by 16 October 2026, leaving time to correct errors before lodging and paying.

Before October, check:

• GST on sales and purchases has been coded consistently.
• Business and private expenses have not been mixed.
• PAYG withholding figures agree with payroll records.
• Payroll liabilities are reconciled.
• Super payments are scheduled early enough to reach employee funds by the due date.
• You have set aside the cash required for BAS and super.

BAS and payroll management in Australia is not an area where guesswork pays off. These amounts may sit in your bank account temporarily, but they are not available business cash. Treating GST, PAYG withholding and super as money held on behalf of others is both financially responsible and ethically sound.

If you use a registered BAS or tax agent, confirm your expected lodgement arrangement and any applicable extension directly with them. Don’t assume an extension applies automatically.

Our BAS and payroll management services are designed to remove this compliance weight from your to-do list while keeping your records accurate and tax-ready.

5. Turn quarter-end numbers into one profitable decision

Numbers become valuable when they change what you do next.

SMART objective: Choose one data-backed business decision to make in October, based on your September quarter results.

Ask yourself:

• Which service, product or client generated the strongest margin?
• Where did the business spend more than expected?
• Are your prices still aligned with your costs and expertise?
• Can you afford the next hire or investment?
• Which client payment terms need to change?
• What work should you stop doing because it consumes time without creating enough profit?

For a creative agency, this might mean reviewing whether strategy, branding or production work is your most profitable offering. A virtual CFO for creative agencies can help turn project data into pricing, staffing and capacity decisions.

For allied health professionals, it may mean comparing practitioner utilisation, appointment capacity and payroll costs. For salons, it could mean reviewing service margins and product sales. For recruitment firms, it may involve measuring the true cost and timing of each placement.

You are allowed to want stronger profits.

There is no virtue in keeping your prices too low, carrying unprofitable clients or exhausting yourself to prove that your business is “good”. Financial success can coexist with generosity, purpose and integrity. In fact, healthy profit gives you more capacity to pay people fairly, support your community and make thoughtful decisions.

A calmer quarter end starts with visibility

I’ve learned that business owners rarely need more pressure. They need a clearer picture and a practical next step.

So, as September closes, focus on these five priorities:

1. Clean the books.
2. Forecast the cash.
3. Fix one broken system.
4. Prepare BAS and super early.
5. Make one profitable decision.

And guess what? You don’t have to untangle every financial issue at once.

Our virtual CFO services help Australian business owners move from reactive bookkeeping to confident planning, reporting and growth decisions. Whether you need ongoing support or a fresh look at your numbers, the goal is simple: remove the financial admin from your to-do list so you can focus on running the business.

Close September with clarity. Enter October with a plan.

Book a free strategy call with Ethical CFO and let’s make your next quarter more profitable, organised and sustainable.