Two companies with $900,000 and $800,000 of wages each sit comfortably under the NSW payroll tax threshold of $1.2 million, paying nothing. If the payroll tax grouping provisions catch them, and they catch far more structures than owners expect, those companies are one taxpayer with $1.7 million of combined wages, a $27,250 annual liability at 5.45% on the $500,000 excess, and, when discovered in audit rather than planning, five years of retrospective assessments with interest and penalties stacked on top. Grouping is the provision that makes payroll tax a structure question rather than a payroll question, and every multi-entity SME, every family business across a company and a trust, every founder who spun a second venture into a new entity, is inside its subject matter whether they know it or not. This guide covers the five triggers, the joint liability sting, the discretionary trust trap, worked dollar maths, and the degrouping discretion that occasionally opens the exit. It is general information only, not tax advice.

Published: July 2026

Why Grouping Exists

The payroll tax threshold is a per-employer concession, and without grouping it would be the most gamed number in state revenue: split a $3 million payroll across three companies and claim three thresholds. The grouping provisions, substantially harmonised across the states and territories, exist to collapse that play. Where businesses are related in defined ways, they are treated as one group: a single threshold shared across all members, wages aggregated for rates and thresholds, and, the part that surprises directors most, joint and several liability, meaning every group member can be pursued for any other member’s unpaid payroll tax. The revenue offices did not write these rules for multinationals. They wrote them for exactly the mid-sized, multi-entity structures Australian SMEs grow into.

For threshold settings see state-by-state payroll tax thresholds and rates and payroll tax Australia. Run the numbers with the payroll tax threshold calculator.

The Five Triggers

• 1. Related bodies corporate. Companies related under the Corporations Act test, holding company and subsidiary, or subsidiaries of the same holding company, are grouped automatically. This trigger is absolute: the Commissioner has no discretion to degroup related bodies corporate, however independently they operate. A corporate group is a payroll tax group, full stop.
• 2. Common employees. Where one business’s employees perform duties for another business under an arrangement between them, the businesses group. The shared admin person paid by Entity A while running the books for Entity B, the operations manager whose time is split informally across two ventures: these everyday resource-sharing habits are a grouping trigger in their own right, independent of ownership.
• 3. Common control. Businesses group where the same person, or the same set of persons together, has a controlling interest, broadly more than 50 per cent, in each. The test adapts to each structure: majority voting power or board control in companies, majority entitlement in partnerships, and ownership interests generally. It is a set-of-persons test, so a husband and wife holding 60 per cent between them across two companies group those companies even though neither holds control alone.
• 4. The discretionary trust trap. Here is the trigger that ambushes family structures: for a discretionary trust, a person who may benefit under the trust, essentially any potential beneficiary, can be taken to have a controlling interest in the business the trust carries on. Because family discretionary trusts name wide beneficiary classes, the same family members are frequently deemed to control every trust in the structure, grouping business ventures that have never shared a customer, an employee or a bank account. Structures set up for asset protection and tax flexibility walk straight into this provision, and it is the single most common way professional-advised family groups discover payroll tax grouping retrospectively.
• 5. Tracing and subsuming. Interests are traced through entities, direct, indirect and aggregated, so control exercised through intermediate companies and trusts still counts, and where two groups share a common member, they subsume into one larger group. There is no structuring depth at which the provisions stop looking.

What Grouping Actually Costs

• One threshold, shared. The group claims a single threshold deduction, typically through a designated group employer or apportioned across members, instead of one each. In NSW at current settings, that is one $1.2 million deduction across the group and 5.45 per cent on the aggregate excess.
• Joint and several liability. Every member is liable for the whole group’s payroll tax. If the trading entity fails owing three years of assessments, the revenue office can collect the full amount from the asset-holding entity, the service trust, or any other member, which is precisely the outcome the multi-entity structure was designed to prevent.
• Retrospectivity. Grouping is discovered, not elected, and audits routinely assess up to five years back, with interest and penalties. The data trail is not subtle: common directors on ASIC records, shared addresses, common employees visible in payroll data, and inter-entity transactions in the accounts.
• Registration obligations. Once grouped wages cross the threshold, registration and monthly or annual lodgement obligations arise for the group, and the failure to register is its own penalty exposure on top of the tax.

Worked example: two companies that thought they were safe

Entity A: $900,000 wages. Entity B: $800,000 wages. Separately under NSW $1.2 million. Grouped: $1.7 million. Excess $500,000 × 5.45% = $27,250 per year. Five unexamined years: $136,250 of primary tax before interest and penalties.

Worked example: three entities at $700,000

Three related companies at $700,000 each look invisible. Grouped wages $2.1 million. Excess over $1.2 million is $900,000. Tax at 5.45% is about $49,050 a year. That is the difference between “we don’t have a payroll tax issue” and a standing five-figure liability.

Multi-entity groups should also read multi-entity bookkeeping so wage maps, recharges and intercompany arrangements are visible rather than opaque.

Degrouping: The Narrow Exit

For every trigger except related bodies corporate, the Commissioner holds a discretion to exclude a member from a group where satisfied the business is carried on independently of, and is not substantially connected with, the other group businesses. The factors are practical and cumulative: the nature and location of each business, ownership and management overlap, shared premises, staff, equipment and administration, trading between the businesses, common customers and suppliers, and financial interdependence such as loans, guarantees and shared banking.

Degrouping succeeds for businesses that are related on paper but strangers in operation: separate industries, separate management, separate resources, arms-length or no dealings. It fails for businesses that share anything material. The family group whose trusts trade with each other, share the bookkeeper and cross-guarantee the bank facility is grouped on the facts, not just the law. Degrouping applications are evidence exercises, made prospectively or in response to assessment, and they are worth making where the operational separation is real, with professional support and documentation. What they are not is a solvent for structures whose separation is cosmetic.

What Multi-Entity Owners Should Actually Do

• Map the group properly, this quarter. List every entity in the orbit, companies, trusts, partnerships, apply the five triggers, and total the wages, including the deemed wages that contractor provisions and director remuneration can add. Most groups have never done this once. Revenue offices do it algorithmically.
• If grouped and over the threshold, register before you are found. Voluntary disclosure and registration land in a different penalty universe from audit discovery, and interest runs regardless while the position stays unexamined.
• Stop the accidental triggers you can stop. Common-employee arrangements can be formalised or unwound. Where staff really do serve multiple entities, structured arrangements beat informal sharing. Trust deeds being established now should be drafted with the beneficiary-class grouping consequence in view.
• Price grouping into structure decisions. The second entity for the new venture, the service trust, the property-holding company: each is created for good reasons, and each should be created knowing whether it joins a payroll tax group and what that costs annually. The tax is rarely a reason not to structure properly. Discovering it five years late with interest is the only truly expensive version.

Keeping the entity map, the aggregated wage total and the registration position current is unglamorous standing work, reviewed every July when thresholds and rates reset, and it is exactly the kind of quiet compliance monitoring an embedded finance team carries so a multi-entity founder is never introduced to the grouping provisions by an assessment.

Related resources and next reading

• Payroll tax Australia
• State-by-state payroll tax thresholds and rates
• Payroll tax threshold calculator
• Multi-entity bookkeeping Australia

FAQ

What is payroll tax grouping?
Provisions in every state and territory that treat related businesses as a single taxpayer: one shared threshold instead of one each, wages aggregated, and joint and several liability across members for the group’s payroll tax. Grouping applies automatically on the facts. It is discovered, not elected.

What triggers grouping?
Five pathways: related bodies corporate under the Corporations Act, use of common employees between businesses, common control where the same person or set of persons holds more than 50 per cent, tracing of interests through intermediate entities, and subsuming, where groups sharing a member merge into one. Discretionary trust beneficiary rules are a major practical trigger inside the control tests.

How do discretionary trusts cause grouping problems?
Because a person who may benefit under a discretionary trust can be deemed to control the trust’s business, wide family beneficiary classes routinely group every trust in a family structure, even ventures with no operational connection. It is the most common retrospective grouping discovery in advised family groups.

What does grouping cost two small companies?
The loss of separate thresholds. Two NSW companies with $900,000 and $800,000 of wages owe nothing separately. Grouped, they owe 5.45 per cent on the $500,000 excess over one $1.2 million threshold, $27,250 a year, and audits can assess multiple years back with interest and penalties.

What is joint and several liability in a payroll tax group?
Every group member can be pursued for the entire group’s unpaid payroll tax, not just its own share. An asset-holding entity can be assessed for a failed trading entity’s liability, which re-pierces the separation the group structure was built to provide.

Can related companies be degrouped?
Related bodies corporate cannot. That trigger carries no discretion. For the other triggers, the Commissioner can exclude a member shown to carry on business independently and without substantial connection to the group, assessed on shared resources, management, trading, customers and financial interdependence.

What evidence supports a degrouping application?
Genuine operational separation: distinct industries and premises, no shared staff or administration, no or arms-length inter-entity trading, independent management and banking, and no cross-guarantees or loans. Applications are documentation exercises, and cosmetic separation does not survive them.

We think we might be grouped and over the threshold. What now?
Map the entities and triggers, aggregate the wages including deemed wages, and if the position is over, register and disclose voluntarily with professional support. Self-identified positions attract materially better treatment than audit discoveries, and interest accrues either way while the question stays unasked.

Do contractor payments count in the group wage total?
They can, under relevant contract provisions, if not exempt. Deemed contractor wages aggregate across a group like employee wages, so the contractor analysis and the grouping map have to be run together.

Is this tax advice?
No. This is general information. Grouping tests are technical and fact-specific. Confirm your structure with a qualified adviser before registering, degrouping or restructuring.

About Scale Suite

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Disclaimer

We review and check this guide periodically. At the time of writing (July 2026), all information was current. Scale Suite is a registered BAS Agent, not a licensed tax advisor or financial advisor. This content is general information only and does not constitute professional tax, financial, or legal advice. Some details may change over time.

Sources

• Payroll Tax Act 2007 (NSW) and harmonised state and territory legislation, grouping provisions (https://legislation.nsw.gov.au)
• Revenue NSW guidance on payroll tax grouping and degrouping (https://www.revenue.nsw.gov.au)
• Corporations Act 2001, related bodies corporate provisions (https://www.legislation.gov.au)
• State revenue office published thresholds and rates (https://www.revenue.nsw.gov.au)