STP Phase 2 Errors Are Costing Employers: What to Check Before 1 July 2026
Most employers assume their payroll software handles Single Touch Payroll correctly, simply because the report goes through without an error message.
That assumption is exactly where the problem hides. Software can submit a report successfully while the underlying data is still wrong. With Payday Super starting 1 July 2026, those quiet errors are about to get a lot more expensive.
Here’s what STP Phase 2 actually requires, the mistake catching businesses out, and what to check before your next pay run.
A Quick Refresher on STP Phase 2
Single Touch Payroll Phase 2 changed how much detail employers report to the ATO every pay event.
Instead of one gross pay figure, businesses now report pay components separately. Overtime, allowances, bonuses, and leave all need their own classification, along with employment basis and income type.
This level of detail isn’t optional. STP Phase 2 has been mandatory for Australian employers since 1 January 2022, and the ATO now expects full compliance, not a transitional approach.
The Mistake Hiding in Plain Sight
Here’s the problem catching businesses out right now. Many employers updated their payroll software when Phase 2 became mandatory but never reviewed their actual payroll configuration.
The software changed. The settings underneath it, income type codes, allowance classifications, salary sacrifice setup, often didn’t. That gap between updated software and outdated configuration is where most Phase 2 errors live.
It’s invisible day to day. Reports submit. Nothing flags as broken. But the data underneath can still be wrong.
Why Allowance Coding Matters More Than It Sounds
This is the detail most business owners have never heard of, and it’s a costly one.
Under STP Phase 2, every allowance needs an individual code, not a lump-sum figure. Each code carries its own tax and superannuation treatment. Code an allowance incorrectly, and you can understate the superannuation base for that employee on every single pay run it applies to.
Multiply that across 52 weekly pay events, and a small coding error becomes a material shortfall, one that’s far harder to untangle once it’s compounded over a year.
Why This Collides with Payday Super
Under the current quarterly super system, a misconfigured allowance is a slow-building problem. You have time to catch it before the next quarterly payment is due.
That buffer disappears under Payday Super. Once super is paid every payday, an ongoing allowance error doesn’t get a quarter to surface. It compounds immediately, pay cycle after pay cycle, with far less room to catch and correct it before contributions are already short.
In other words, STP accuracy and Payday Super readiness are now the same problem, not two separate ones.
What the ATO Actually Penalizes
The ATO has moved from an education-first approach to active enforcement on STP compliance.
Late or missed reports attract a penalty unit for every 28-day period a report is overdue, capped per event. Incorrect or misleading reports, including wrong income type codes or allowance classifications, carry separate penalties depending on whether the ATO considers the error careless or deliberate.
This isn’t a minor compliance footnote. For a growing business, these penalties stack quickly across multiple pay cycles and multiple employees.
What to Check Before Your Next Pay Run
Review your allowance codes individually. Confirm each one reflects what it actually is, not a generic catch-all category left over from Phase 1.
Check whether allowances are correctly flagged for superannuation. An allowance that should count toward Ordinary Time Earnings but isn’t coded that way directly understates what you owe in super.
Confirm employment basis and income type are accurate. These fields affect more than just STP. They flow into Centrelink integration and pre-filled tax returns for your staff.
Don’t assume a software update fixed your configuration. Many Phase 2 errors exist precisely because the software changed and the settings underneath didn’t.
Run a test pay cycle if you’re unsure. Catching an error in a test run costs nothing. Catching it after 1 July, under Payday Super, costs considerably more.
Frequently Asked Questions
Is STP Phase 2 actually mandatory for my business? Yes. It applies to all Australian employers, regardless of size, and has been the required reporting standard since 1 January 2022.
My STP reports go through fine. Does that mean my data is correct? Not necessarily. A report can submit successfully while containing incorrect allowance codes or misclassified pay components underneath it.
Why does this matter more now than it do last year? Because Payday Super removes the quarterly buffer that previously gave employers time to catch and correct super-related errors before they compounded.
What’s the fastest way to check if I have a problem? Speak to your payroll provider about reviewing your allowance coding and income type settings, not just your software version.
Get STP and Payday Super Sorted Talk to Edulink
Payroll compliance is exactly where small, invisible errors turn into real penalties. We make sure your STP reporting and super obligations are accurate, not just submitted.
Edulink Payroll Services charges $750 per employee, per year, covering payroll, compliance, and reporting, for small and medium businesses across greater Sydney and Campbelltown.
Have more employees? Call us for a discounted rate.
📞 Call us today: 04 044 71 816
Edulink Payroll Services | Campbelltown & Greater Sydney | Call 04 044 71 816
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