Superannuation on a casual payroll is conceptually simple. You pay the super guarantee on ordinary time earnings, at the current rate, for every eligible employee, by the deadline. The reason it goes wrong so often is not that the rule is hard. It is that casual payrolls have more moving parts than permanent ones: hours change every week, workers come and go, and the calculation base is easy to get subtly wrong in a way nobody notices for a year.
Failure point one: the calculation base
Super is payable on ordinary time earnings, not on every dollar that appears on the payslip. For a casual, ordinary time earnings generally includes the base rate and the casual loading. Overtime is generally excluded. The trap is that what counts as overtime for a casual is defined by the applicable award, not by whether the hours felt long, and awards differ on where ordinary hours end and overtime begins.
If your payroll treats all hours above a fixed number as overtime without checking the award, you will either underpay super, which becomes a liability, or overpay it, which is money you never get back. Getting this right per award is exactly the kind of work that should not be done by a person reading a PDF each week.
Failure point two: the eligibility edges
- Short engagements. The old $450 monthly earnings threshold was removed, so a worker who does a single four-hour shift is generally entitled to super on it. Payrolls built before that change sometimes still carry the threshold logic.
- Under-18s. Different rules apply based on hours worked per week, and casual rosters make that a moving target rather than a setting.
- Fund choice and stapling. When a new employee does not choose a fund, you generally have to request their stapled fund from the ATO rather than defaulting them. On a high-churn casual payroll that is a step per worker, not a step per year.
The ATO publishes the current position on all of these at ato.gov.au, and it is worth re-reading rather than relying on what your payroll was configured to do three years ago.
Failure point three: timing
Historically this was the quiet killer. Contributions were made quarterly, which meant a calculation error could compound for three months before anyone saw it, and a cash flow squeeze could turn a super obligation into a super shortfall with interest and an administration component attached. The super guarantee charge is not deductible, which makes a late payment considerably more expensive than the payment would have been.
Payday super changes the shape of that risk. When contributions move with the pay rather than at the end of a quarter, the exposure window shrinks from three months to days, and a calculation error surfaces almost immediately instead of compounding. We wrote about what that means operationally in Payday Super is here.
A short checklist
- Confirm the award that applies to each role, and where it draws the line between ordinary hours and overtime.
- Check that casual loading is inside your ordinary time earnings base.
- Remove any leftover monthly earnings threshold logic from your payroll rules.
- Have a defined process for stapled fund requests for new starters, not an ad hoc one.
- Reconcile contributions to payroll every cycle rather than every quarter, so an error has days to live rather than months.
Free download: the 2026 Casual Rates Cardputs every award’s entry casual rate on one printable sheet - or browse the always-current casual award rates online.
Or move the obligation
The other option is to stop carrying it. Under an Employer of Record arrangement the provider is the legal employer, so the super guarantee obligation, the fund choice process and the timing risk all sit with them. MyGig runs payroll daily and moves 12% super with it, priced against the applicable award with the clause recorded on every hour. See how the payroll side works or what an Employer of Record actually takes on.
Quick answers
Do you pay super on casual loading?
Generally yes. Casual loading forms part of ordinary time earnings for super guarantee purposes, so it sits inside the calculation base. Overtime is generally excluded, but what counts as overtime for a casual is set by the applicable award.
Is there a minimum amount a casual must earn before super is payable?
No. The $450 per month earnings threshold was removed, so super is generally payable from the first dollar for eligible employees. Separate rules still apply to employees under 18 based on hours worked.
What is the super guarantee rate for casual workers?
The same rate that applies to any other employee. Casual status does not change the rate. MyGig remits 12% superannuation on the earnings of every worker it employs.
What happens if super is paid late?
A late contribution generally becomes a super guarantee charge, which includes the shortfall, an interest component and an administration component, and which is not tax deductible. That is why timing is treated as a compliance risk rather than a cash flow choice.
This is general information rather than advice, and superannuation rules change. The ATO is the authority on every rate, threshold and deadline mentioned above, and publishes the current position at ato.gov.au. Check it, or check with your adviser, before acting on any of this.