Running a small business in Melbourne means keeping an eye on a lot more than sales and service, your books need just as much attention. The good news is that most small business accounting comes down to a handful of habits done consistently, plus knowing which 2026 changes are worth planning around. Here are the tips we give our own clients, starting with the one that affects almost every employer.
1. Get Ahead of Payday Super
From 1 July 2026, the rules around how and when superannuation gets paid are changing under what’s known as Payday Super (ATO, About Payday Super). If you employ anyone, this is the single change worth acting on early rather than scrambling closer to the date. Check your payroll software can keep up, review your cash flow buffer, and confirm employee super details are correct well before the switch.
2. Keep Business and Personal Finances Separate
It sounds basic, but it is still the most common mess we see. A dedicated business bank account and card make bookkeeping faster, your tax return cleaner, and your numbers far easier to trust when you need them for a loan or a grant application.
3. Move Bookkeeping to the Cloud
Spreadsheets and shoeboxes of receipts do not scale. Cloud platforms like Xero, MYOB and QuickBooks sync with your bank feed, store records automatically, and make BAS time far less painful. Each platform suits a different type of business, and we have broken down the differences in our Xero, MYOB or QuickBooks comparison if you are still deciding.
4. Track Cash Flow Weekly, Not Just at Tax Time
Profit on paper and cash in the bank are not the same thing. A quick weekly check of what is coming in, what is going out, and what is sitting in unpaid invoices catches problems while they are still small, rather than at year end when options are limited.
5. Claim Every Deduction You Are Entitled To
This is where good record-keeping pays for itself. If you are planning equipment, tools or vehicle purchases, the $20,000 instant asset write-off still applies for assets first used or installed ready for use by 30 June 2026, with a further extension proposed but not yet law for 1 July 2026 onwards (ATO, $20,000 Instant Asset Write-off). Keep receipts and a simple log of business-use percentage so nothing gets missed or disallowed.
6. Put the Key 2026 Dates in One Place
A single calendar with your main deadlines saves a lot of last-minute stress:
| What | Date |
| Q4 BAS (Apr to Jun quarter) | 28 July 2026 |
| Instant asset write-off cut-off for 2025-26 assets | 30 June 2026 |
| Payday Super becomes mandatory | 1 July 2026 |
| Self-lodged tax return for 2025-26 | 31 October 2026 |
| Tax return via registered tax agent (if registered before 31 October) | 15 May 2027 |
7. Know When to Bring in a Local Accountant
A lot of the small businesses we work with sit across Williams Landing, Wyndham Vale, Hoppers Crossing, Point Cook, Tarneit and Werribee, and the same patterns show up again and again. Tradies often underclaim vehicle and tool deductions when receipts go missing during a busy month, family-run retail and hospitality businesses tend to confuse profit with available cash around stock-heavy periods, and growing service businesses often outgrow their bookkeeping setup before they notice it has happened. If any of that sounds familiar, our guide to the benefits of tax planning for small business owners in Melbourne is a useful next read, and our tradie-specific accounting services cover exactly these deduction and cash flow issues.
What’s Changing for Small Business Tax in 2026?
To recap the main shifts behind these tips: Payday Super becomes mandatory from 1 July 2026, the instant asset write-off remains at $20,000 for assets used by 30 June 2026 with a proposed permanent extension still before Parliament, and new AML/CTF obligations from 1 July 2026 mean your accountant may ask more identity and structure questions than before. None of it is cause for panic, but each one is easier to handle with a few months’ notice than a few weeks’.
Book a Free Tax Health Check with MaxMargin Accountants
If you would rather talk through how these tips apply to your specific business than work it out alone, a tax health check is the simplest place to start. Book a free tax health check with MaxMargin Accountants and our Williams Landing-based team will walk through your accounts, payroll and upcoming deadlines together.
FAQ
What is Payday Super and when does it start?
Payday Super requires employers to pay superannuation at the same time as wages, rather than quarterly. It becomes mandatory from 1 July 2026, with contributions required to reach an employee’s super fund within 7 business days of payday.
Is the $20,000 instant asset write-off still available?
Yes, for assets first used or installed ready for use by 30 June 2026. A proposal to make the threshold permanent from 1 July 2026 was announced in the Federal Budget but had not yet passed Parliament.
When is my small business tax return due in 2026?
If you lodge yourself, the deadline is 31 October 2026. If you register with a tax agent before that date, you may be eligible for an extension to 15 May 2027 under their lodgement program.
