Payroll Compliance in Australia 2026: STP Phase 2, Payday Super, and What Your Bookkeeper Must Know

Payroll compliance in Australia has never been more complex. With Single Touch Payroll (STP) Phase 2 now fully embedded, the imminent arrival of Payday Super from 1 July 2026, and state-based payroll tax obligations varying across eight jurisdictions, Australian employers face a demanding compliance landscape. A skilled bookkeeper who understands these obligations is not just a convenience — they are a critical safeguard against ATO penalties, superannuation shortfalls, and state revenue office audits.

Understanding STP Phase 2 and What It Means for Your Business

Single Touch Payroll Phase 2 is the ATO's expanded payroll reporting framework, mandatory for all Australian employers regardless of size. Under STP Phase 2, employers must report detailed, disaggregated payroll data to the ATO on or before each payday — not monthly or quarterly, but every single pay cycle.

The key difference from Phase 1 is the level of granularity required. Phase 2 requires employers to break down gross earnings into specific components and classify them using ATO-defined categories. A bookkeeper managing STP Phase 2 compliance must correctly report:

• Disaggregated gross income — overtime, paid leave (annual, personal, long service), bonuses, commissions, directors' fees, and allowances must each be reported separately using ATO-specific codes
• Income types — salary and wages, closely held payees, working holiday makers, foreign employment income (with country codes), and labour hire must be correctly classified
• Tax treatment codes — identifying the correct tax calculation method for each employee, including whether they claim the tax-free threshold or have a HECS/HELP debt
• Employment basis — full-time, part-time, casual, or labour hire classification for each employee
• Cessation details — the reason an employee leaves the business must be reported at the time of their final pay

A finalisation declaration must be submitted by 14 July each year, confirming that all year-to-date payroll data is accurate. This declaration enables employees to access their income statements via myGov and complete their tax returns.

Payday Super: The Major Change Coming 1 July 2026

From 1 July 2026, Australia's superannuation guarantee (SG) payment rules will change fundamentally. Under the new "Payday Super" regime, employers will be required to pay SG contributions at the same time as — or within a very short window of — each employee's salary or wages, rather than on the current quarterly schedule.

This is one of the most significant payroll compliance changes in decades. For businesses currently paying super quarterly, it means a complete overhaul of cash flow planning and payroll processes. A bookkeeper who is not prepared for this change could inadvertently expose their clients to substantial SG shortfalls and associated penalties.

The SG rate for the 2025–26 financial year is 12%. Bookkeepers must ensure that payroll software is configured to calculate and remit contributions at this rate, and that the transition to Payday Super is planned well in advance of the July 2026 deadline.

State-Based Payroll Tax: A Hidden Compliance Risk

Many small and medium-sized businesses are unaware that they may have payroll tax obligations — or that those obligations vary significantly depending on which state or territory they operate in. Payroll tax is a state-based tax levied on employers whose total Australian-wide taxable wages exceed jurisdiction-specific thresholds.

For the 2025–26 financial year, the annual thresholds and standard rates across Australia are:

• New South Wales — $1,200,000 threshold, 5.45% rate
• Victoria — $1,000,000 threshold, 4.85% rate
• Queensland — $1,300,000 threshold, 4.75% rate
• Western Australia — $1,000,000 threshold, 5.5% rate
• South Australia — $1,500,000 threshold, 4.95% rate
• Tasmania — $1,250,000 threshold, 4.0% rate
• Australian Capital Territory — $2,000,000 threshold, 6.85% rate
• Northern Territory — $2,500,000 threshold, 5.5% rate

Taxable wages are broadly defined and include base salaries, overtime, commissions, bonuses, superannuation contributions, fringe benefits, certain allowances, and payments to deemed contractors. Businesses with related entities under common ownership may be "grouped" for payroll tax purposes, sharing a single threshold across the group.

A bookkeeper with payroll tax expertise will monitor total Australian-wide wages, identify when registration thresholds are approaching, and ensure monthly returns and annual reconciliations are lodged on time with the relevant state revenue office.

Common Payroll Compliance Mistakes to Avoid

Payroll errors can be costly — both financially and reputationally. Here are the most common mistakes Australian businesses make with payroll compliance:

• Incorrect STP Phase 2 coding — Mislabelling allowances, misclassifying contractors as employees (or vice versa), or using incorrect income type codes leads to ATO data mismatches and potential audits
• Missing the STP finalisation deadline — Failing to submit the finalisation declaration by 14 July delays employees' ability to lodge their tax returns and can trigger ATO follow-up
• Quarterly super mindset post-July 2026 — Continuing to pay super quarterly after the Payday Super commencement date will result in SG shortfalls and penalties
• Ignoring payroll tax thresholds — Growing businesses that cross state payroll tax thresholds without registering face back-taxes, interest, and penalties from state revenue offices
• Stapled super fund non-compliance — Employers must query the ATO for an employee's stapled super fund if the employee does not nominate one. Defaulting to the company fund without checking is non-compliant
• Using non-compliant payroll software — Legacy systems that have not been updated for STP Phase 2 will produce incomplete or incorrect ATO submissions
• Poor record-keeping — Payroll records must be retained for seven years. Inadequate records make it impossible to respond to ATO or Fair Work audits

Australian Regulatory Context

Payroll compliance in Australia involves multiple regulators, each with distinct oversight responsibilities:

The Australian Taxation Office (ATO) administers STP reporting, PAYG withholding, superannuation guarantee obligations, and the Payday Super regime. The ATO has broad powers to audit payroll records, issue penalties for SG shortfalls, and pursue directors personally for unpaid superannuation through the Director Penalty Notice regime.

The Fair Work Commission and the Fair Work Ombudsman oversee minimum wage rates, award entitlements, and leave obligations under the Fair Work Act 2009. Underpayment of wages — even inadvertent — can result in significant back-pay obligations and civil penalties.

State and territory Revenue Offices administer payroll tax, with each jurisdiction maintaining its own registration, lodgement, and audit processes. The payrolltax.gov.au portal provides a harmonised resource for multi-state employers.

Bookkeepers who provide BAS services — including payroll-related BAS lodgements — must be registered with the Tax Practitioners Board (TPB) as a BAS agent. This registration requires meeting education and experience requirements and maintaining professional indemnity insurance.

What to Look For in a Payroll-Specialist Bookkeeper

Not all bookkeepers have the same depth of payroll expertise. When engaging a bookkeeper to manage your payroll compliance, look for the following:

• TPB registration as a BAS agent — Essential for bookkeepers who lodge BAS statements or provide payroll-related tax services
• STP Phase 2 experience — Ask specifically about their experience configuring and managing STP Phase 2 reporting, including income type coding and finalisation declarations
• Payday Super readiness — Confirm they are actively preparing clients for the 1 July 2026 Payday Super changes
• Payroll software proficiency — Experience with leading STP-compliant platforms such as Xero, MYOB, or QuickBooks is important for seamless ATO integration
• Multi-state payroll tax knowledge — If your business operates across state borders, ensure the bookkeeper understands interstate wage apportionment and grouping provisions
• Membership of a professional body — Look for members of the Institute of Certified Bookkeepers (ICB) or CPA Australia, which require ongoing professional development

Practical Payroll Compliance Checklist for Australian Employers

Use this checklist to assess your current payroll compliance position:

1. Is your payroll software STP Phase 2 compliant and up to date?
2. Are all employees correctly classified by income type, employment basis, and tax treatment code?
3. Are allowances and leave types correctly coded to ATO reporting categories?
4. Have you submitted the annual STP finalisation declaration by 14 July?
5. Have you checked for stapled super fund obligations for new employees?
6. Are you monitoring your total Australian-wide wages against state payroll tax thresholds?
7. Are you registered for payroll tax in every state where you pay wages above the threshold?
8. Do you have a plan in place for transitioning to Payday Super by 1 July 2026?
9. Are payroll records being retained for the required seven-year period?
10. Is your bookkeeper TPB-registered as a BAS agent?

How MyMoney® Can Help

Payroll compliance is not an area where guesswork is acceptable. The financial and legal consequences of getting it wrong — from ATO penalties and SG shortfalls to state revenue office audits — can be severe. Engaging a qualified, experienced bookkeeper who specialises in payroll compliance is one of the most important investments an Australian employer can make.

MyMoney® connects Australian businesses with verified bookkeepers who have demonstrated expertise in STP Phase 2, Payday Super preparation, payroll tax, and BAS lodgement. Whether you are a small business managing your first employees or a growing company with complex multi-state payroll obligations, our marketplace helps you find the right professional quickly.

To get started, post a brief outlining your payroll compliance needs and receive tailored proposals from qualified bookkeepers. You can also browse our bookkeeper directory to explore professionals by location, software expertise, and industry experience.

With Payday Super less than a year away, now is the time to ensure your payroll processes are in expert hands.