State Payroll Tax Obligations in Australia: A 2026 Bookkeeper's Guide for Employers

Payroll tax is one of the most frequently misunderstood employer obligations in Australia. Unlike income tax or GST, which are administered federally by the ATO, payroll tax is a state and territory tax — meaning every jurisdiction sets its own rates, thresholds, and rules. For Australian businesses that employ staff across multiple states, or that are growing toward the relevant thresholds, getting payroll tax right is a significant compliance challenge. A skilled bookkeeper can be the difference between staying compliant and facing a costly retrospective assessment.

Understanding State Payroll Tax in Australia

Payroll tax is levied on employers whose total Australian wages exceed the threshold set by each state or territory. It is calculated as a percentage of taxable wages and is paid directly to the relevant state revenue office — not the ATO.

Because each jurisdiction administers its own payroll tax legislation, businesses operating in multiple states must manage separate registration, lodgement, and payment obligations for each state where they employ staff. The rules for what counts as taxable wages, how thresholds are calculated, and when registration is required differ across jurisdictions.

For the 2026–27 financial year, the annual payroll tax thresholds and standard rates vary significantly across Australia. New South Wales applies a threshold of $1,200,000 at 5.45%, while Victoria's threshold is $1,000,000 at 4.85% with additional surcharges for larger employers. Queensland applies a tiered rate of 4.75% to 4.95% above $1,300,000.

South Australia's threshold is $1,500,000 with a ramping rate of 4.95%, and Western Australia applies 5.5% above $1,000,000. Tasmania uses a tiered structure from 4.0% to 6.1% above $1,250,000. The ACT applies tiered rates of 6.75% to 8.75% above $1,750,000, and the Northern Territory has a $2,000,000 threshold at 5.5%.

These thresholds apply to total Australian wages, not just wages paid in that state. This means a business with $1.1 million in total wages — all paid in New South Wales — would be liable for NSW payroll tax even though its wages are below the NSW threshold on a standalone basis if the calculation method requires total Australian wages to be considered for apportionment purposes.

What Counts as Taxable Wages?

One of the most common payroll tax compliance errors is underestimating what constitutes taxable wages. The definition is broader than most employers expect.

Cash Wages and Salary Components

All cash remuneration is taxable, including base salary, wages, commissions, bonuses, allowances, and director fees. Termination payments may also be partially taxable depending on the jurisdiction and the nature of the payment.

Superannuation Contributions

Employer superannuation contributions — including compulsory Superannuation Guarantee contributions and salary sacrifice amounts — are included in taxable wages in most states. With the Superannuation Guarantee rate increasing to 12% from 1 July 2025, this component of taxable wages has grown for many employers.

Fringe Benefits

The grossed-up taxable value of fringe benefits provided to employees is included in taxable wages. Employers who provide cars, entertainment, or other non-cash benefits must include the FBT-grossed-up value in their payroll tax calculations.

Contractor Payments

Payments to contractors are a significant compliance trap. In most states, payments to contractors are treated as taxable wages if the contract is primarily for the provision of labour — particularly where the contractor cannot delegate the work to someone else, does not provide their own tools or equipment, or is engaged on a regular and systematic basis.

Businesses that engage contractors without considering payroll tax implications risk significant retrospective assessments when state revenue offices conduct audits. A bookkeeper with payroll tax expertise will help you assess which contractor arrangements are likely to be caught by these provisions.

Key Considerations for Payroll Tax Compliance

Managing payroll tax compliance requires attention to several interconnected obligations.

• Registration timing — Most states require registration within seven days of the month in which your wages first exceed the monthly threshold. Late registration can attract penalties and interest on unpaid tax.
• Monthly lodgement — Registered employers must lodge monthly returns, typically due by the 7th of the following month. Annual reconciliation returns are due in July each year.
• Interstate apportionment — Businesses operating in multiple states must apportion their wages across jurisdictions. The threshold in each state is reduced proportionally based on the ratio of wages paid in that state to total Australian wages.
• Grouping provisions — Related entities that share common control, directors, or are related bodies corporate are treated as a single group for payroll tax purposes. The group receives only one threshold to share, not one per entity. Revenue offices actively enforce grouping rules.
• Exemptions and concessions — Some wages are exempt from payroll tax, including wages paid to apprentices and trainees in certain circumstances, wages paid during parental leave in some states, and wages paid by certain not-for-profit organisations. Eligibility for exemptions varies by jurisdiction.
• Record-keeping — Employers must maintain detailed payroll records for at least five years in most states. These records must be sufficient to support the wages figures reported in monthly and annual returns.

Common Payroll Tax Mistakes and Red Flags

State revenue offices conduct regular audits of employer payroll tax compliance. These are the most common issues they identify.

Failing to Register When Wages Cross the Threshold

Many businesses are unaware that they have crossed the payroll tax threshold, particularly when wages grow gradually over time. A bookkeeper who monitors total wages against state thresholds on a monthly basis can alert you before a registration obligation arises.

Incorrectly Excluding Contractor Payments

Treating all contractor payments as outside the payroll tax net is a common and costly error. Revenue offices have sophisticated data-matching capabilities and regularly identify businesses that have failed to include contractor payments in their taxable wages calculations.

Ignoring Grouping Obligations

Business owners who operate multiple related entities — a common structure for asset protection or tax planning purposes — often fail to consider that all entities in the group share a single payroll tax threshold. A retrospective grouping assessment can result in significant back-taxes, penalties, and interest.

Miscalculating Superannuation and FBT Components

With the Superannuation Guarantee at 12% and many employers providing fringe benefits, these components can add materially to taxable wages. Failing to include them accurately in payroll tax calculations leads to underpayment and potential penalties.

Australian Regulatory Context for Payroll Tax

Payroll tax is administered by the revenue authority in each state and territory. In New South Wales, this is Revenue NSW. In Victoria, it is the State Revenue Office (SRO). Queensland's Office of State Revenue, South Australia's RevenueSA, Western Australia's Department of Finance, Revenue Tasmania, the ACT Revenue Office, and the Northern Territory's Department of Treasury all administer their own payroll tax regimes.

While each jurisdiction has its own legislation, the states and territories have worked to harmonise key aspects of payroll tax through the Payroll Tax Harmonisation Project. This has standardised definitions of taxable wages, contractor provisions, and grouping rules across most jurisdictions, making it somewhat easier for multi-state employers to manage compliance.

Bookkeepers who act as BAS agents are registered with the Tax Practitioners Board (TPB) and are authorised to prepare and lodge BAS and other indirect tax returns on behalf of clients. While payroll tax is a state obligation rather than a federal one, a BAS agent with payroll tax expertise can assist with calculations, record-keeping, and liaising with state revenue offices.

The ATO's Single Touch Payroll (STP) Phase 2 data, which employers have been reporting since 2022, is increasingly being shared with state revenue offices to support payroll tax compliance activities. This means that discrepancies between STP-reported wages and payroll tax returns are more likely to be identified and queried.

Questions to Ask Your Bookkeeper About Payroll Tax

When engaging a bookkeeper to manage your payroll tax obligations, these questions will help you assess their capability.

1. Do you monitor our total Australian wages against state payroll tax thresholds each month, and will you alert us when we approach a registration threshold?
2. How do you assess whether our contractor payments are subject to payroll tax in each state?
3. Do you have experience managing payroll tax for businesses operating in multiple states, including interstate apportionment?
4. How do you handle grouping provisions if we have related entities?
5. Are you registered as a BAS agent with the Tax Practitioners Board?
6. How do you stay current with changes to payroll tax rates, thresholds, and legislation across the states where we operate?
7. What records do you maintain to support our payroll tax returns, and how do you ensure they are audit-ready?

How MyMoney® Can Help

Payroll tax compliance is complex, state-specific, and carries significant financial risk if managed incorrectly. A bookkeeper with genuine payroll tax expertise — particularly one who understands multi-state obligations, contractor provisions, and grouping rules — can save your business from costly retrospective assessments and penalties.

MyMoney® Marketplace connects Australian businesses with qualified, TPB-registered bookkeepers who have the skills to manage your payroll tax obligations accurately and proactively. Whether you are approaching a registration threshold for the first time or managing compliance across multiple states, our platform makes it easy to find the right expertise.

Post a Brief to describe your payroll tax and bookkeeping requirements and receive proposals from experienced professionals. Or Browse Bookkeepers to find a qualified BAS agent with the payroll tax expertise your business needs.