What to do this month to prep for 30 June

Posted by ATO, 2 June 2025

Smiling woman with short hair, sitting with a laptop in a business meeting.

Tax time is here, and so is our guide on what you can do to prepare your small businesses for 30 June. Our guide includes your key due dates for your tax return, how to correct mistakes, and information about the ATO's free Tax Help program, and the government-funded National Tax Clinic program.

With different obligations comes different due dates. As a small business you’ve probably got a lot of dates to keep track of. To help you stay on track, here are some important dates to keep in mind over the next few months:

25 June

If your tax professional lodges your FBT return electronically on your behalf, you have until 25 June to lodge your FBT return and pay any FBT owed.

30 June

The financial year ends on 30 June, this is an important date for your financial reporting, stocktakes and managing your tax obligations.

14 July

If you have employees, you should be reporting your payroll information through Single Touch Payroll. You’ll need to make an STP finalisation declaration by 14 July so your employees have the right information to lodge their tax return.

28 July

If your business is registered for GST, your business activity statement (BAS) for the April–June quarter is due on 28 July, however you may have extra time to lodge and pay if you lodge online or through a registered BAS or tax agent.

If you have employees, your super guarantee payments for the April–June quarter are also due on 28 July.

If you lodge your BAS monthly, your BAS is due on the 21^st day of the following month. So your BAS for June will be due on 21 July.

28 October

If your business is registered for GST, your BAS for the July–September quarter is due on 28 October. You may also receive extra time to lodge and pay if you’re eligible.

If you have employees, super guarantee payments for the July–September quarter also need to be paid in full and to the correct fund by this date. Remember, the SG rate will increase to 12% on 1 July 2025. This means you need to calculate SG contributions at 12% for your eligible workers for payments of ordinary time earnings after 1 July.

31 October

For most individuals, 31 October is the deadline to lodge their tax returns for the previous financial year (which ends on 30 June). This is also the final date to register with a tax agent and receive additional time to lodge.

Mark these dates on your calendar and set reminders to stay on track.

Mistakes can happen, but when it comes to your tax, it’s always important to address them quickly. If you realise you’ve made an error in your tax return, you can fix it by following these steps:

Identify the mistake: The first step is to figure out what information in your return is incorrect and how it needs to change. For example, this could be a source of income you forgot to include, an overclaimed deduction, or an expense you forgot to claim.
Amend your tax return: Log on to ATO online services through your myGov account. Select Manage tax returns from the Quick link and select Amend next to the income year you want to amend. Make the correction and select Calculate to see your new tax estimate, you can then lodge your amendment.

If you’ve made a significant mistake or provided false or misleading information to the ATO, you can consider making a voluntary disclosure. Disclosing the mistake to the ATO gives you an opportunity to correct your tax affairs and can potentially reduce or eliminate penalties that would normally apply. You can find out more at ato.gov.au/VoluntaryDisclosure.

If you’re unsure about the amendment process or you need advice, consult with a registered tax professional to ensure the correction is handled properly.

The Australian Government offers 2 free tax support programs to help individuals and small businesses manage their tax affairs, the ATO’s Tax Help program and the National Tax Clinic program. Each have their own eligibility requirements and provide different levels of support.

The ATO’s community–based Tax Help program assists eligible individuals to lodge their tax return online. This is a free service that’s available from July to October each year, with appointments available in person at a Tax Help centre near you, online, or via phone.

Who’s eligible for the Tax Help program?

Income of $70,000 or less
simple tax affairs (e.g., not running a business or working as a contractor, no capital gains tax, no foreign or trust income).

What services are provided?

creating a myGov account
lodging your return online
lodging an amendment to your tax return
claiming a refund of franking credits.

To make an appointment, call the ATO on 13 28 61 and select the appropriate options for Tax Help services near you.

National Tax Clinics

For individuals and small businesses who are unable to access tax advice due to financial, social, or personal challenges, and are not represented by a tax professional, the National Tax Clinic program may be able to help.
Tax clinics operate independently through various university campuses and TAFE campuses across Australia, and can provide:
- free tax advice and support
- assistance with managing tax affairs and registrations
- help with engaging the ATO about tax debt.

To check if you’re eligible for support, find a tax clinic near you and learn about the services they provide, visit nationaltaxclinics.gov.au.

Organise your records: Ensure all financial records, receipts, and invoices are well-organised and up-to-date. This will make life easier when you lodge your return.

Review your deductions: Double-check that you are correctly claiming your deductions. Common deductions for small businesses include office supplies, travel expenses, and equipment depreciation.

Think about setting aside GST, pay as you go withholding and super guarantee from your cash flow: Doing this will help ensure you have the funds available when it’s time to pay. Setting up another bank account for your tax and super, that's separate to your business bank account, could also help you with this.

Plan for super guarantee: Ensure all super payments for employees are paid in full, on time and to the correct fund by each quarterly due date to get a tax deduction and avoid extra charges. Remember, the SG rate increases to 12% on 1 July 2025.

If you’re unsure about any aspect of your tax obligations, seek advice from a registered tax agent. You can check your agent’s registration through the Tax Practitioners Board.

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