How to Automate Your BAS Prep So Tax Time Isn’t a Scramble

EOFY is eight weeks away. For most Australian small business owners, that means a familiar panic: digging through bank statements, chasing receipts, trying to remember what that $340 purchase was in November.

It doesn’t have to work this way. A few tools and simple automations can turn BAS prep from a quarterly emergency into something you barely notice.

Why BAS prep is painful (and fixable)

The core problem isn’t the BAS itself. It’s that the information it needs: income, expenses, GST collected, GST paid: is scattered across your bank, your inbox, and a shoebox of receipts.

Manual reconciliation at the end of each quarter is slow and error-prone. The fix is getting that information into one place continuously, not all at once when the deadline is looming.

Step 1: Connect your bank to Xero (or MYOB)

If you’re not already doing this, start here. This is the single highest-leverage thing you can do.

Both Xero and MYOB connect directly to your Australian business bank account via bank feeds. Transactions flow in automatically: usually within 24 hours. You’re not entering anything manually.

What you need:

• A Xero or MYOB subscription (Xero Starter starts at AU$32/month, MYOB from AU$27/month)
• Your business bank account (ANZ, CBA, NAB, Westpac, and most smaller banks are supported)
• About 10 minutes to set it up

Once connected, your accounting software sees every transaction as it happens. Categorisation still needs human judgment, but data capture is automatic.

Step 2: Automate receipt capture with Dext or Hubdoc

Bank feeds handle your outgoing payments, but receipts are a separate problem: especially if you pay cash, use personal cards for business, or deal with suppliers who send paper invoices.

Dext (formerly Receipt Bank) and Hubdoc both solve this. You take a photo of a receipt on your phone; the app reads the amount, date, vendor, and GST component using OCR; the data flows into Xero or MYOB, matched to the bank transaction.

Dext integrates with Xero natively. Hubdoc is included with Xero’s Growing and Established plans.

You can also forward email invoices to a dedicated address: energy provider bills, software subscriptions, supplier invoices: and they’re captured automatically.

The goal: by the end of each month, your receipts are already in the system. Not sitting in a pile.

Step 3: Set up rules for recurring transactions

Both Xero and MYOB let you create bank rules: automatic categorisation for transactions that follow a pattern.

Examples:

• Anything from “SPOTIFY AUSTRALIA” → Entertainment, 0% GST
• Anything from “AGL ENERGY” → Utilities, 10% GST
• Anything from “AWS” → Software/Cloud Services, 10% GST
• Rent payments → Rent, 10% GST

After a few months, 70–80% of your transactions categorise themselves. You’re reviewing and approving, not typing.

Step 4: Use Zapier to close the gaps

Not everything has a native integration. Zapier connects the tools that don’t talk to each other.

Stripe or Square payments → Xero invoice
Connect your payment processor to Xero via Zapier. Every sale creates an invoice automatically. GST is captured at the point of sale, not reconstructed later.

WooCommerce or Shopify → Xero
Both platforms have direct Xero integrations, so no Zapier needed. But if you’re using a more custom setup, Zapier handles it. Orders sync, refunds sync, and your sales figures stay current.

Gmail receipt forwarding
Set a filter in Gmail to auto-forward any email with “invoice” or “receipt” in the subject line to your Dext address. Zapier can handle this routing if you want conditions beyond what Gmail supports natively.

Step 5: Do a 20-minute BAS tidy at the end of each month

Quarterly BAS prep is painful because three months of mess has piled up. Monthly maintenance takes 20 minutes because there’s not much to do.

Block the time at the end of each month. In Xero, open the Uncategorised Transactions view and clear the backlog. Most months it’ll be a handful of edge cases: unusual vendors, split transactions, the odd personal item mixed in.

Do this four times before your Q4 BAS is due. When June 30 arrives, your books are current. The BAS is mostly done before you start.

What this costs in practice

Here’s a realistic setup for a small service business:

For most sole traders and small businesses: Xero Starter + Dext + Zapier Free is about AU$52/month. The time it saves: two to four hours per quarter at minimum: pays for itself at any reasonable hourly rate.

Lodging the BAS itself

Once your books are clean, lodging through Xero takes around 10 minutes. Xero pulls the figures from your categorised transactions. GST collected, GST paid, PAYG if applicable: and you lodge directly through the ATO connection, or export and hand to your accountant.

Your accountant benefits too. Clean books mean lower fees, because they’re not spending hours reconstructing your year from scratch.

EOFY timing

EOFY is 30 June. Your Q4 BAS covers April to June and is due 28 July.

Start automating now and you’ll have cleaner records for the final quarter, a much smoother July, and a system that makes every BAS after this one easier.

Sources

• Xero BAS overview. Xero Australia
• Business Activity Statements. Australian Tax Office
• Dext for small business. Dext Australia
• Hubdoc features. Xero/Hubdoc
• Xero integrations. Zapier

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