Cross State Payroll

Payroll tax grouping: how "common control" actually gets tested

Written by Cross State Payroll teamPublished 23 July 2026Last reviewed 14 August 2026

“Common control” sounds like it should mean one person owning two companies outright. In practice it’s tested far more broadly than that, and it’s the most common way two businesses end up grouped for payroll tax without anyone deliberately structuring for it. See our grouping overview for what grouping does to your threshold — this post is about how the control test itself actually works, where people misjudge it, and what the process looks like if you think it doesn’t apply to you.

Common control is only one gateway into a group

It’s worth naming upfront that common control isn’t the only way two businesses can be grouped — the Queensland Revenue Office’s own overview lists five separate gateways: related bodies corporate, common employees, controlling interest (common control), tracing of interest through corporations, and merged groups. Common control is simply the one that most often surprises business owners, because unlike a related-company structure that’s visible on a company register, control can arise from voting rights, trust arrangements, or an indirect chain of ownership that isn’t obvious without actually mapping it out.

The >50% threshold, by entity type

NSW, VIC and QLD all use the same basic trigger: a person, or a small set of people acting together, controls more than 50% of a business. What counts as “control” depends on the entity type:

And control isn’t confined by state or national borders — SRO Victoria’s guidance is explicit that grouping applies even where one of the businesses operates interstate or overseas. A Melbourne business controlled by the same person as a business registered in Auckland or Singapore can still be grouped for Victorian payroll tax purposes, if the control test is met.

Worked example: the discretionary trust trap

Take a hypothetical family trust with three potential beneficiaries — a parent and two adult children. The parent operates a business, Widget Co, and the shares in Widget Co are held by the family trust. Only the parent has ever taken a distribution; the two adult children have never received a payment and have no involvement in Widget Co’s operations. Under the deeming rule used in all three states, all three people are treated as controlling Widget Co, not just the parent who actually runs it and takes the money. If either adult child separately owns or controls another business, that business is now a candidate for grouping with Widget Co too — a connection that wouldn’t show up on any cap table, because it runs through the trust’s discretion, not a shareholding.

Worked example: tracing through a chain

Where someone’s direct interest in a business is under 50%, revenue offices can trace indirect interests held through other entities they control, and add them together. Revenue NSW publishes a worked example: a person holds a 50% direct interest in Company C, plus an indirect interest through a chain — 80% of Company A, which holds 40% of Company B, which holds 50% of Company C. That indirect chain contributes 80% × 40% × 50% = 16%. Combined with the 50% direct interest, that’s a 66% aggregate interest in Company C — enough to group that person with Company A and Company C. Company B, where the same person’s traced interest works out to only 32%, is not grouped on this basis.

The Queensland Revenue Office publishes a similar mechanism using corporate control: if Company S controls Company C (as its parent), and Company C separately holds a controlling interest in a partnership, Company S is deemed to also control that partnership — even though S has no direct relationship with it at all. All three entities end up grouped. The practical lesson from both examples is the same: draw the actual ownership chain out on paper before concluding you’re safe at 40% or 45% direct ownership. A chain two or three entities deep can easily push an aggregate interest over the 50% line.

Common mistakes business owners make here

Applying for exclusion

A business that meets a grouping test on paper but genuinely operates independently can apply to be excluded. The process differs meaningfully by state:

What to do next

  1. Map out ownership and control across every related entity you’re connected to, including trusts and their potential beneficiaries — not just companies you directly hold shares in.
  2. Check for common employees between entities — staff performing duties across more than one business is its own separate grouping trigger.
  3. If a chain of ownership exists, calculate the traced aggregate interest rather than relying on the direct percentage alone.
  4. Once you know whether you’re grouped, model the combined threshold impact using the grouping calculator.
  5. If the businesses genuinely operate independently, start gathering the kind of evidence your state’s exclusion process asks for — separate customer bases, independent staffing, and financial records — before lodging an application.

None of this is a determination this site — or any calculator — can make for you. Whether you meet a control test, and whether an exclusion application would succeed, depends on your specific ownership structure and how independently the businesses actually operate.

Frequently asked questions

Can I be grouped with a business I own in a different state?
Yes. SRO Victoria explicitly confirms grouping applies even where one of the businesses is interstate or overseas — control is what triggers grouping, not where the other business is registered or operates.
Does grouping apply if I've never received a distribution from a family trust?
It can. Under the discretionary trust deeming rule used in NSW, VIC and QLD, every person who could potentially benefit from the trust is deemed to hold a controlling interest, regardless of what they've actually been paid — this catches beneficiaries who have never received a cent.
Can I apply to be excluded from a group?
In most circumstances, yes — but the process and evidence required differ by state, and in Victoria, exclusion isn't available at all for grouping based on related corporations. See the exclusion process for your state below.
If I own less than 50% of a business, am I safe from grouping?
Not necessarily. Revenue offices can trace interests held indirectly through other entities you control and add them to your direct interest — a chain of holdings under 50% at each link can still combine to a controlling interest overall.
What's the difference between grouping and interstate apportionment?
Interstate apportionment reduces one business's threshold based on how its own wages are spread across states. Grouping is a separate, prior question — it determines whether several legally distinct businesses are treated as a single taxpayer sharing one threshold in the first place. Grouped businesses then have that shared threshold apportioned across states the same way an individual business's would be.