Superannuation, Payroll Tax and the Employer Obligations That Cross Borders

Two contractors price the same job. One builds a labour rate from the base wage plus what they remember of the on-costs. The other builds it from the base wage plus superannuation, payroll tax, workers compensation premium, portable long service leave, leave loading, public holidays, annual and personal leave, allowances, training and the non-productive time that is real on every job.

The gap between those two rates is large, and it is not a margin difference. It is the difference between a business that recovers its employment costs and one that discovers them at year end.

This guide covers the two on-costs that carry the most compliance risk — superannuation and payroll tax — and the classification question that sits underneath both. The wage rate itself, and which award or agreement applies, is covered in our guide to enterprise agreements and labour rates; portable long service leave in our guide to portable long service leave; and workers compensation in our guide to workers compensation and injury management.

The on-cost stack, and where each piece sits

Item	Level	Where it is covered
Base rate, allowances, penalties	Federal award or enterprise agreement	enterprise agreements and labour rates
Superannuation guarantee	Federal	This guide
Payroll tax	State and territory	This guide
Workers compensation premium	State and territory	workers compensation
Portable long service leave	State and territory	portable long service leave
Leave, public holidays, non-productive time	Federal standards plus your own experience	preparing cost estimates

Note the pattern: one federal layer and four state layers. That is why a contractor who expands across a border acquires four new compliance relationships at once, and why the on-cost percentage that worked in one state is wrong in the next.

Superannuation: the obligation with no tolerance

The superannuation guarantee requires employers to make contributions for eligible workers at a prescribed rate on ordinary time earnings, into a complying fund, by a prescribed quarterly deadline.

This guide states no rate, threshold or deadline dates. The rate has been rising on a legislated schedule, eligibility rules have changed, and payment timing requirements have been the subject of announced reform. Take the current rate, the current eligibility position and the current deadlines from the Australian Taxation Office, and confirm your own position with your accountant.

What matters structurally for a civil employer:

• It is calculated on ordinary time earnings, which is not the same as gross wages. Overtime is generally excluded; many allowances and loadings are included. Getting this boundary wrong is one of the most common underpayments, and it is systematic rather than occasional — it repeats every pay run.
• Payment must reach the fund by the deadline, not leave your account by it. Clearing house timing catches employers who pay on the last day.
• Choice of fund and stapled fund rules govern where contributions go for new employees.
• It applies to most workers regardless of hours, following changes to the former minimum earnings threshold — another area where remembered rules are now wrong.

The ordinary time earnings boundary is worth a specific check with your accountant against your actual pay codes. On a civil payroll with site allowances, travel, tool allowances, overtime and various loadings, whether each is included is not obvious, and the error is repeated across every employee and every quarter until someone looks.

Superannuation for contractors, which surprises people

This is the provision that catches civil businesses most often, and it operates independently of whether someone is an employee at general law.

Superannuation legislation extends the definition of employee to include a person engaged under a contract that is wholly or principally for their labour. A genuine independent contractor, invoicing with an ABN, may still attract a superannuation obligation if the contract is principally for their personal labour.

• The typical caught case is an individual providing labour with minimal plant, paid by time, doing what an employee would do.
• The typical uncaught case is a business supplying labour together with substantial plant, priced for a result rather than for time, and free to delegate.
• Delegation matters. A genuine right to subcontract the work to someone else points away from a labour contract.
• Contracting with a company, trust or partnership rather than an individual generally takes the arrangement outside the provision — which is why the structure of who you contract with matters, not just the terms.
• An ABN proves nothing about this question, and neither does the parties’ agreement that no superannuation is payable.

Review your regular subcontractors against this test with your accountant — particularly owner-operators, and particularly where the plant they bring is small relative to the labour. The exposure accumulates quarterly and is discovered years later with interest and charges attached.

What happens when super is paid late

The consequence of paying superannuation late is disproportionate to the delay, and it is the single fact most business owners do not know until it happens.

Where a contribution is not made in full by the deadline, the employer becomes liable for the superannuation guarantee charge, which is a different and worse liability than the contribution would have been. In general terms it is calculated on a broader earnings base than ordinary time earnings, carries an interest component and an administration component, must be reported to the Commissioner, and is not tax deductible — unlike a contribution paid on time.

• A day late is late. There is no grace period in the ordinary course.
• Directors can become personally liable for unpaid amounts through the director penalty regime, which pierces the company structure. This is the point at which a cash flow problem becomes a personal one.
• Voluntary disclosure is treated better than discovery, which is a reason to fix a known problem rather than hope.
• Single Touch Payroll reporting gives the Commissioner visibility of what was accrued, matched against what was paid — so non-payment is now detected quickly rather than at audit.

The practical instruction is to treat superannuation as the most senior payment obligation in the business. When cash is tight — the situation examined in our guide to cash flow in civil construction contracts — superannuation is the one to pay first, because it is the one with personal liability attached and the one whose penalty is not deductible. If it cannot be paid on time, that is a signal requiring advice immediately, not a deferral.

Payroll tax: eight regimes, one workforce

Payroll tax is a state and territory tax on wages paid by an employer above a threshold. Every jurisdiction has one, and while they have been harmonised in structure, the rates, thresholds, exemptions and administration differ.

This guide states no rates or thresholds. They differ in every jurisdiction, they are adjusted in budgets, and several jurisdictions apply surcharges or graduated rates above certain levels. Take them from the revenue office in each state or territory where you pay wages.

What is generally true and matters for a growing civil business:

• The threshold is a cliff you approach quietly. A business hiring through a growth phase crosses it without an event, and registration is the employer’s responsibility rather than something triggered by the revenue office.
• Wages is defined broadly — salaries, allowances, bonuses, commissions, superannuation contributions, fringe benefits, termination payments and certain contractor payments. Superannuation being included surprises people.
• Thresholds are apportioned where you pay wages in more than one jurisdiction, so interstate work does not give you a fresh full threshold in each.
• Registration, monthly returns and an annual reconciliation are the administrative rhythm.
• Some exemptions and rebates exist, including for apprentices and trainees in several jurisdictions, which is a genuine and under-claimed offset for civil businesses employing apprentices — relevant to the commitments in our guide to local content, skills and training.

Grouping: the rule that catches family structures

Grouping is the payroll tax provision that most often produces an unexpected assessment for civil SMEs, because the typical civil business structure is exactly what it targets.

In general terms, related businesses are grouped and treated as one for threshold purposes, so the group shares a single threshold rather than each entity having its own. Grouping can arise from common control, related companies, shared employees, or one business using another’s staff.

• The classic civil structure is at risk — an operating company, a plant-owning entity, a property trust and perhaps a labour entity, all controlled by the same people.
• Employees shared between entities is a common trigger even where ownership differs.
• The consequence is retrospective. An assessment that groups entities can reach back over years, with interest and penalties.
• Exclusion may be available where businesses are genuinely carried on independently, but it must be applied for and granted, not assumed.

If your business runs more than one entity, get the grouping position confirmed by your accountant in writing. This is also the point at which it intersects with a sale or restructure, as covered in our guide to buying and selling a civil contracting business — an unresolved grouping exposure is exactly what a buyer’s adviser looks for.

Contractor payments and payroll tax

Payroll tax legislation contains contractor provisions under which payments to contractors are deemed to be wages unless an exemption applies. This is a separate test from the superannuation one and from the employee-versus-contractor question at general law, which means the same arrangement can be assessed three different ways.

• The starting position is that the payment is taxable, with exemptions available in defined circumstances.
• Common exemptions relate to contractors who provide services to the public generally, who engage others to perform the work, who work for a limited number of days in a year, or where the labour component is ancillary to equipment supplied. The precise tests differ by jurisdiction.
• The equipment exemption matters for civil, because a genuine wet-hire arrangement with substantial plant is structurally different from labour supply — the arrangements in our guide to plant hire agreements.
• You must be able to demonstrate the exemption, which means holding evidence rather than asserting it.

Civil contractors using regular owner-operators are squarely in this territory. An owner-operator with a tipper working for you most of the year, paid hourly, is a payment that may well be deemed wages. Establish the position for each recurring arrangement rather than for the category.

Working across a border

Interstate work multiplies obligations, and the multiplication is not proportional.

• Payroll tax follows where the work is performed, with rules determining the relevant jurisdiction where an employee works in more than one — generally by reference to principal place of work, residence or where wages are paid, applied in a set order.
• You may need to register in multiple jurisdictions and lodge separate returns, with the threshold apportioned.
• Workers compensation follows a different test again, generally the state of connection of the employment — see workers compensation and injury management.
• Portable long service leave follows where the work is done, requiring separate registration and returns — see portable long service leave.
• Superannuation is federal and does not change.

Four obligations, three different tests for which jurisdiction applies. That is the practical reason a first interstate job needs an hour with your accountant before mobilisation rather than a correction eighteen months later, and it belongs on the checklist in our guide to scaling a civil contracting business.

The classification question underneath all of it

Whether a person is an employee or an independent contractor determines a large part of this, and it is assessed differently for different purposes — which is why a single answer does not exist.

Purpose	Test	Consequence of getting it wrong
Employment law	The nature of the relationship, with the written contract central where it is comprehensive	Unpaid entitlements, sham contracting exposure
Superannuation	Employee at general law, plus the extended labour-contract limb	Superannuation guarantee charge, director liability
Payroll tax	The contractor provisions and their exemptions	Retrospective assessment, interest, penalties
Workers compensation	Deemed worker provisions, differing by jurisdiction	Uninsured claim, premium adjustment
Portable long service leave	Scheme coverage rules	Unpaid levies, workers without accrual

A person can be a genuine independent contractor for employment law and still attract superannuation and payroll tax. That is not a contradiction; it is five statutes with five purposes. The commercial implication is that “we treat them as a subbie” is not a compliance position, and the sham contracting exposure discussed in our guide to enterprise agreements and labour rates sits alongside all of it.

Records, audits and what gets checked

• Single Touch Payroll reports pay events to the Commissioner as they occur, which means payroll data is visible in near real time and mismatches surface quickly.
• Superannuation payments are matched against reported accruals through fund reporting.
• Revenue offices conduct payroll tax reviews, and the construction industry receives attention because of the contractor provisions and grouping.
• Data matching between agencies is routine, so an issue identified in one place surfaces in others.
• Keep contractor documentation — the contract, evidence supporting any exemption claimed, ABN and insurance verification, and evidence of the work performed.
• Retain records for the statutory periods, which differ between obligations.

The best protection is a documented position taken in advance. A written accountant’s assessment of your recurring arrangements, updated when they change, converts an audit from a discovery exercise into a review of reasoning.

Building it into the labour rate

The commercial point of this whole subject is the all-up hourly cost of an employee, which is what belongs in an estimate.

• Start from the correct base rate under the applicable instrument, including allowances and the penalty pattern for the actual work.
• Add superannuation at the current rate on the correct earnings base.
• Add payroll tax where you are over the threshold, at the rate for the jurisdiction — and note that it applies to the superannuation as well.
• Add workers compensation premium at your actual rate, not an industry average.
• Add portable long service leave where the scheme is contribution-funded.
• Divide by productive hours, not paid hours. Annual leave, public holidays, personal leave, training, inductions, travel and wet time are paid and not productive. This step is where the largest single error occurs, because dividing by paid hours understates the rate substantially.
• Add supervision, PPE, training and the site-based costs that attach to having a person on site.

Recalculate annually. The superannuation rate has been moving, payroll tax rates and thresholds change in budgets, and your workers compensation rate changes with your claims history. A labour on-cost percentage carried forward from three years ago is wrong in a knowable direction — the discipline in our guide to preparing civil works cost estimates.

Where it shows up in tenders

• Rate build-ups on schedule of rates and collaborative contracts, where you may be asked to show on-costs line by line and defend them under audit — the open-book position discussed in our guide to ECI, alliances and collaborative contracting.
• Compliance declarations about taxation and employment obligations.
• Financial capacity assessment, where unpaid statutory liabilities are exactly what an assessor looks for — see demonstrating financial capacity.
• Subcontractor payment declarations, including statutory declarations about payment of employee entitlements down the chain.
• Government supplier requirements, where tax compliance and employee entitlement obligations are conditions of doing business.

An outstanding statutory liability is a live tender problem, not just an accounting one. It affects financial capacity assessment, it may need to be disclosed, and on some schemes it disqualifies.

Getting the administration right

• Pay superannuation monthly rather than quarterly. It smooths cash, removes the deadline risk, and is the single highest-value change most civil SMEs can make here.
• Have your accountant confirm the ordinary time earnings treatment of every pay code you use, in writing.
• Review recurring contractor arrangements annually against the superannuation and payroll tax tests.
• Monitor the payroll tax threshold as you grow, and register before you have to.
• Confirm the grouping position if you run more than one entity.
• Before any interstate job, check payroll tax, workers compensation and portable long service leave for that jurisdiction.
• Reconcile annually and fix errors by voluntary disclosure rather than waiting.
• Recalculate the on-cost percentage each year and put it into the estimating system.

Checklist

• Is superannuation calculated on ordinary time earnings, with every pay code confirmed by your accountant?
• Are contributions reaching the fund by the deadline, allowing for clearing house timing?
• Do you pay superannuation monthly rather than quarterly?
• Have recurring contractors been tested against the labour-contract limb for superannuation?
• Does anyone in the business understand that late superannuation is a non-deductible charge with director liability attached?
• Are you registered for payroll tax in every jurisdiction where you pay wages above the threshold?
• Do you know that superannuation is included in taxable wages for payroll tax?
• If you run more than one entity, has the grouping position been confirmed in writing?
• Have contractor payments been assessed against the payroll tax contractor provisions and exemptions?
• Can you evidence any exemption claimed?
• Are apprentice and trainee payroll tax rebates being claimed where available?
• Before an interstate job, have payroll tax, workers compensation and portable long service leave been checked for that jurisdiction?
• Is there a documented accountant’s position on your recurring contractor arrangements?
• Is the labour rate divided by productive hours rather than paid hours?
• Does the rate include payroll tax on superannuation?
• Is your workers compensation rate your actual rate rather than an industry average?
• Is the on-cost percentage recalculated annually and updated in the estimating system?
• Are there any outstanding statutory liabilities that would surface in a financial capacity assessment?

Sources and further reading

This guide is general information for Australian civil construction businesses and is not tax, accounting, legal or employment advice. It deliberately states no superannuation guarantee rate, earnings thresholds, payment deadlines, payroll tax rates, thresholds, exemption criteria or grouping tests: the superannuation rate has been rising on a legislated schedule and payment timing requirements have been subject to announced reform, and payroll tax is administered separately by each state and territory with rates, thresholds, exemptions and contractor provisions that differ and are adjusted in budgets. Take current figures from the Australian Taxation Office and from the revenue office in each relevant jurisdiction. Whether a particular worker is an employee, whether a contract is wholly or principally for labour, whether a payroll tax contractor exemption applies, and whether entities are grouped are questions of law and fact that must be determined for your specific arrangements with a registered tax agent or accountant, and where necessary with legal advice. Unpaid superannuation can give rise to personal liability for directors. Nothing here should be relied on in place of advice on your own circumstances.

• The superannuation guarantee regime administered by the Australian Taxation Office, referenced in §02 to §04 — contributions on ordinary time earnings for eligible workers by quarterly deadlines, the extended definition of employee covering contracts wholly or principally for labour, the superannuation guarantee charge arising on late or short payment and its non-deductibility, and the director penalty regime. Rates, thresholds and deadlines are set federally, have changed and are scheduled to change further; the ATO’s current material is the operative source and none are reproduced here.
• Payroll tax as administered by each state and territory revenue office, referenced in §05 to §08 — the tax on wages above a threshold, the broad definition of wages including superannuation contributions and fringe benefits, apportionment of thresholds across jurisdictions, grouping of related businesses, and the contractor provisions with their exemptions. Although the regimes are harmonised in structure, rates, thresholds, exemptions and administration differ by jurisdiction; the relevant revenue office is the source.
• The observation in §09 that employee-versus-contractor status is assessed differently for employment law, superannuation, payroll tax, workers compensation and portable long service leave purposes reflects the separate statutory tests in each regime, and is stated in general terms. The correct classification for each purpose must be determined on the specific facts with professional advice.
• Single Touch Payroll reporting, referenced in §10, provides the Commissioner with near real-time visibility of pay events and supports data matching against superannuation fund reporting.
• Related TenderBuilt guides carrying the primary-source detail referenced above: enterprise agreements and labour rates, portable long service leave, workers compensation and injury management, plant hire agreements, cash flow in civil construction contracts, demonstrating financial capacity, buying and selling a civil contracting business, scaling a civil contracting business, ECI, alliances and collaborative contracting, local content, skills and training and preparing civil works cost estimates.