ATO Compliance Checklist for Australian Businesses in 2026

Managing Australian Taxation Office (ATO) obligations can be challenging for business owners, particularly as reporting requirements, payroll regulations, and lodgement deadlines continue to evolve. Staying informed and maintaining accurate financial records are essential for avoiding penalties and keeping your business compliant in 2026.

This practical ATO compliance checklist outlines important responsibilities for Australian businesses, including Single Touch Payroll, GST and BAS reporting, superannuation obligations, record keeping, and key lodgement deadlines.

Single Touch Payroll (STP) Requirements

Single Touch Payroll is the system used by employers to report payroll information—including salaries and wages, PAYG withholding, and superannuation liability information—to the ATO. Employers generally need to submit an STP report on or before each payday through STP-enabled payroll software. Businesses should regularly review their payroll records and ensure that employee information, payment classifications, tax treatment, and superannuation details remain accurate.

STP Phase 2 Reporting

STP Phase 2 requires employers to provide more detailed payroll information to the ATO. Important reporting requirements include:

• Employment information:Correctly report each employee’s employment basis, such as full-time, part-time or casual, along with relevant tax and payroll details.
• Income types:Classify payments using the appropriate income type, including salary and wages, closely held payee income, working holiday maker income, and other applicable categories.
• Disaggregation of gross payments:Separately report payment components such as bonuses, commissions, overtime, paid leave, allowances and directors’ fees instead of combining everything under gross earnings.
• Employee cessation information:When an employee leaves, report the cessation date and appropriate cessation reason in the STP submission.
• Current employee details:Update payroll records whenever an employee’s circumstances, employment basis or tax treatment changes.

Common STP Mistakes to Avoid

Businesses should review their payroll processes carefully to avoid common STP reporting errors, including:

• Submitting pay-event reports after payday or failing to lodge them
• Using incorrect income types or payment classifications
• Applying the wrong tax treatment to allowances and employee payments
• Reporting inaccurate employee, payroll or superannuation information
• Failing to update employment or cessation details promptly
• Not correcting payroll errors through an update event or subsequent pay event
• Missing the annual STP finalisation deadline

For most employees, the STP finalisation declaration is due by 14 July 2026. Different arrangements may apply to closely held payees, so businesses should confirm the relevant deadline for their circumstances.

Business Activity Statement (BAS) Deadlines

Lodging and paying your Business Activity Statement on time is an important part of ATO compliance. Missing a BAS deadline may result in penalties and interest charges, so businesses should maintain accurate records and monitor their reporting schedule carefully.

Key Quarterly BAS Due Dates in 2026

These are the standard quarterly BAS deadlines. If a due date falls on a weekend or public holiday, lodgement and payment can generally be made on the next business day. Businesses using a registered BAS or tax agent may also qualify for different lodgement dates.

Monthly BAS Lodgers

Businesses with a GST turnover of $20 million or more must generally report GST monthly and lodge their BAS electronically. A monthly BAS is usually due on the 21st day of the month following the reporting period.

Businesses with a GST turnover below $20 million may also choose monthly reporting. Always check your ATO account or registered agent’s schedule for the deadline that applies to your business.

GST Registration and Reporting

Understanding when to register for GST and how to report it correctly is essential for maintaining ATO compliance. Once registered, your business must include GST in taxable sales, lodge Business Activity Statements, maintain appropriate records and claim GST credits correctly.

When You Must Register for GST

• Your current or projected annual GST turnover is $75,000 or more
• Your non-profit organisation has an annual GST turnover of $150,000 or more
• You provide taxi, limousine or ride-sourcing services, regardless of turnover
• You want to claim fuel tax credits for your business

Businesses below the applicable turnover threshold may choose to register voluntarily. When registration becomes compulsory, you generally need to register within 21 days.

GST Compliance Essentials

• Tax invoices: Provide a valid tax invoice within 28 days when a customer requests one for a taxable sale exceeding $82.50, including GST.
• Record keeping: Keep tax invoices, sales records, expense documents, BAS calculations and other relevant business records for at least five years.
• GST credits: Only claim GST credits for eligible business purchases. Do not claim the private-use portion of an expense or GST on purchases that do not include GST.
• GST reporting: Accurately report taxable sales, GST collected and eligible GST credits in each applicable Business Activity Statement.
• Accounting method: Under cash accounting, GST is generally reported when payment is received or made. Under non-cash accounting, GST is generally reported when an invoice is issued or received, or when payment occurs—whichever happens first.
• Business details: Keep your GST registration, contact information and business details updated with the ATO.

Record-Keeping Requirements

Accurate and complete records help Australian businesses meet their tax, GST, superannuation and employer obligations. Most business records must be retained for at least five years, although certain documents may need to be kept for longer.

Your records should clearly explain every business transaction and allow the ATO to verify the information reported in tax returns, Business Activity Statements and Single Touch Payroll submissions.

Essential Business Records

Businesses should retain the following records where applicable:

• Sales records: Tax invoices, receipts, cash-register records, sales summaries and evidence of digital transactions
• Purchase and expense records: Supplier invoices, receipts, payment confirmations and documents supporting business deductions
• Banking records: Bank statements, credit-card statements, deposit records and completed bank reconciliations
• Payroll and employment records: Timesheets, payslips, employee payment details, PAYG withholding records and STP reports
• Superannuation records: Employee super fund details, contribution calculations and evidence of payments
• Asset records: Purchase documents, asset registers, disposal records and depreciation schedules
• Inventory records: Stocktake reports and records showing the value of trading stock
• GST and BAS records: Tax invoices, GST calculations, adjustment records and lodged Business Activity Statements
• Other tax records: Documents supporting income, deductions, capital gains, fringe benefits and fuel tax credit claims

Digital Record Keeping

The ATO accepts electronic business records, provided they are accurate, complete and available when required. Digital records should be:

• Easily accessible and readable
• Stored in English or in a format that can be readily converted into English
• Protected against unauthorised alteration or deletion
• Backed up regularly in a secure location
• Capable of explaining the relevant business transactions
• Retained for the required record-keeping period
• Convertible into a format the ATO can review when requested

Businesses should use reliable accounting or record-management software and regularly test their backup and recovery processes.

Tax Return Lodgement Deadlines for 2026

Individual Tax Returns

• Self-lodgers: The 2025–26 individual tax return is generally due by 31 October 2026.
• Using a registered tax agent: A later deadline may apply under the ATO’s tax-agent lodgement program. You should engage a registered tax agent before 31 October 2026 and confirm your specific due date.
• Outstanding returns: If you have overdue tax returns from previous years, your normal extended deadline may not apply.

Company Tax Returns

Company tax-return deadlines vary according to the entity’s size, lodgement history, taxable status and whether a registered tax agent is used.

• Small companies: The lodgement and payment date is generally 28 February 2027 for the 2025–26 income year.
• Companies using a tax agent: Different dates may apply under the registered agent lodgement program.
• Outstanding returns or special circumstances: Earlier deadlines may apply to companies with overdue returns, newly registered entities, large or medium taxpayers, or businesses using a substituted accounting period.

Companies should confirm their applicable deadline through ATO Online services or with their registered tax agent.

Superannuation Guarantee Obligations

2026 Super Guarantee Rate

The minimum super guarantee rate is 12% in 2026.

For employee earnings paid up to 30 June 2026, super is generally calculated at 12% of ordinary time earnings under the quarterly super system. From 1 July 2026, Payday Super rules apply, and employers must calculate and pay super guarantee contributions with each payday based on eligible qualifying earnings.

Employers must maintain accurate payroll and super records, use the employee’s nominated or stapled super fund where required, and report the necessary information through Single Touch Payroll.

Quarterly Super Payment Deadlines

The employee’s super fund must receive the contribution by the applicable deadline. The 28 July 2026 deadline was the final payment deadline under the quarterly super guarantee system.

Payday Super from 1 July 2026

For earnings paid from 1 July 2026, employers must pay super guarantee contributions with every payday. The employee’s super fund must generally receive the contribution within seven business days after payday.

Quarterly deadlines no longer apply to earnings paid from 1 July 2026. Employers should allow sufficient processing time so contributions reach the employee’s fund within the required timeframe.

Super Guarantee Compliance

• Calculate super at the minimum rate of 12% of eligible qualifying earnings
• Pay super with every payday for earnings paid from 1 July 2026
• Ensure contributions reach the employee’s fund within seven business days
• Pay contributions to the employee’s nominated or stapled super fund, where applicable
• Verify fund and member details before making a first-time contribution
• Report required super information accurately through Single Touch Payroll
• Maintain complete payroll and contribution records
• Check for rejected or returned payments and correct them promptly
• Monitor payment processing times to avoid late contributions
• Lodge and pay the applicable super guarantee charge if contributions are missed or late

PAYG Withholding and Instalments

PAYG Withholding

PAYG withholding requires businesses to deduct tax from certain payments and remit it to the ATO. If your business employs workers or makes other payments subject to withholding, you may need to:

• Register for PAYG withholding before withholding tax
• Obtain completed tax file number declarations from employees
• Withhold the correct amount from salaries, wages and other applicable payments
• Withhold tax from certain supplier or contractor payments when an ABN is not quoted, unless an exception applies
• Report employee payroll and withholding information through Single Touch Payroll
• Report PAYG withholding amounts on the applicable activity statement
• Pay withheld amounts to the ATO by the required deadline
• Provide payment summaries for applicable payments not reported and finalised through STP
• Maintain complete payroll and withholding records

PAYG Instalments

PAYG instalments are regular prepayments towards the expected tax liability on business and investment income. The ATO generally determines whether a taxpayer must enter the PAYG instalment system using information from the most recently lodged tax return.

For individuals, automatic entry may apply when instalment income is $4,000 or more, the estimated tax attributable to that income is $500 or more, and the relevant tax debt meets the ATO’s threshold. Different entry criteria apply to companies and superannuation funds.

The ATO will notify you if PAYG instalments apply and will specify whether payments must be made quarterly, twice yearly, annually or monthly. Most businesses pay quarterly through their activity statement, while taxpayers with instalment income of $20 million or more generally pay monthly.

If expected income or tax liability changes significantly, you may be able to vary the instalment amount or rate. However, penalties or interest may apply if the varied amount is too low.

Fringe Benefits Tax (FBT)

Fringe Benefits Tax is paid by employers on certain non-cash benefits provided to employees or their associates in addition to salary and wages. Employers must identify taxable benefits, calculate their taxable value, maintain supporting records and lodge an FBT return when required.

2026–27 FBT Year

Type 1 benefits generally apply when the employer is entitled to a GST credit for the benefit. Type 2 benefits generally apply when no GST credit can be claimed. The gross-up rates are used to calculate the grossed-up taxable value; they are not separate FBT tax rates.

Common Fringe Benefits

• Company vehicles available for an employee’s private use
• Employer-provided car parking
• Entertainment, including certain meals, functions and event tickets
• Low-interest or interest-free employee loans
• Payment or reimbursement of employees’ private expenses
• Housing or accommodation benefits
• Goods or property supplied to employees
• Certain gym memberships and wellness benefits
• Debt waivers and other financial benefits

Exemptions, concessions or special valuation rules may apply depending on the type of benefit, employer and circumstances.

Employer FBT Compliance

• Review all employee benefits provided during the FBT year
• Identify available exemptions and concessions
• Calculate the taxable and grossed-up value correctly
• Report applicable benefits through Single Touch Payroll
• Lodge an FBT return and pay any liability by the relevant deadline
• Keep supporting records, declarations and calculations for at least five years

Tax Planning Strategies for 2026

Effective tax planning should be based on genuine commercial decisions, accurate records and current ATO rules. Before implementing any strategy, businesses should review their financial position with a registered tax agent or qualified adviser.

Review Available Deductions

• Instant asset write-off: For the 2025–26 income year, eligible small businesses using simplified depreciation rules may immediately deduct the business-use portion of qualifying assets costing less than $20,000. The threshold applies per asset, and the asset must be first used or installed ready for use by 30 June 2026.
• Prepaid expenses: Eligible small businesses may be able to claim an immediate deduction for certain prepaid expenses under the 12-month rule. The eligible service period must not exceed 12 months and must end in the following income year.
• Bad debts: Write off genuinely unrecoverable debts
• Stock obsolescence: Review outstanding customer balances and write off genuinely unrecoverable debts before year-end. The debt must meet the ATO’s requirements before a deduction can be claimed.
• Trading stock: Conduct a year-end stocktake and identify obsolete, damaged or slow-moving inventory. Eligible stock may be valued using an accepted valuation method supported by appropriate evidence.
• Business expenses: Confirm that all eligible operating expenses are recorded and supported by valid invoices, receipts and payment records.
• Depreciating assets: Review your asset register and ensure disposals, private-use adjustments and depreciation deductions are recorded correctly.

Review the Timing of Income and Transactions

• Income recognition: Review when income is derived under your applicable cash or accrual accounting method. Do not artificially delay invoicing or receiving income to avoid tax.
• Capital gains: Consider the tax consequences before disposing of a business asset. For CGT purposes, the timing of a disposal is generally determined by the contract date rather than the settlement date.
• Dividend planning: Companies should review retained earnings, franking credits, cash flow and shareholder circumstances before declaring dividends.
• Contract timing: Review significant contracts and transactions before year-end to understand when income, expenses or capital gains will be recognised.
• Professional advice: Obtain advice before changing transaction dates or business arrangements, particularly where related parties, trusts, capital gains or anti-avoidance rules are involved.

Common ATO Compliance Risk Indicators

Understanding what attracts ATO attention can help you avoid audits:

• Unusual deductions: Claims significantly higher than industry benchmarks
• Cash businesses: Hospitality, construction, and retail face higher scrutiny
• Private use of business assets: Claiming 100% business use of vehicles or properties
• Round numbers: Too many estimates or round figures raise red flags
• Inconsistent reporting: Discrepancies between BAS and income tax returns
• Lifestyle vs income: Significant personal expenses not matching declared income

Software and Systems for Compliance

ATO-Approved Accounting Software

Using cloud-based accounting software helps maintain compliance:

• Xero: Full STP integration, automatic BAS preparation, bank feeds
• MYOB: Australian-focused features, payroll and super integration
• QuickBooks: User-friendly interface, good for small businesses

Benefits of Digital Systems

• Automatic bank reconciliation
• Real-time financial reporting
• STP-compliant payroll
• GST tracking and reporting
• Reduced manual data entry and errors

When to Engage Professional Help

Consider hiring a professional accountant or bookkeeper if:

• Your business structure is complex (trusts, multiple entities)
• You're not confident with accounting and tax rules
• You want to focus on growing your business, not paperwork
• You've received an ATO audit notice
• Your turnover exceeds $2 million
• You're expanding internationally

Your 2026 Compliance Checklist

Monthly Tasks

• Reconcile bank accounts
• Review aged debtors and creditors
• Process payroll and submit STP
• Lodge monthly BAS (if applicable)

Quarterly Tasks

• Lodge quarterly BAS
• Pay superannuation guarantee
• Review profit and loss statement
• Pay PAYG instalments

Annual Tasks

• Complete stocktake
• Finalise STP reporting (14 July)
• Lodge income tax return
• Lodge FBT return (if applicable)
• Review and update business insurance
• Plan for next year's tax obligations

Conclusion

ATO compliance doesn't have to be overwhelming. With proper systems, regular attention to deadlines, and professional support when needed, you can stay on top of your obligations and focus on what matters most: growing your business.

At Finquest Business Solutions, we specialize in keeping Australian businesses compliant with ATO requirements. Our team of experienced accountants handles everything from BAS preparation to year-end tax returns, giving you peace of mind and more time to focus on your business.

Need help with ATO compliance? Contact our team today for a free consultation and discover how we can save you time, reduce stress, and ensure you never miss a deadline.