Running payroll yourself looks cheap until something goes wrong. And in payroll, things go wrong quietly - a missed award rate here, a late super payment there - and by the time you notice, the cost has already stacked up

We process payroll for businesses across Australia, and the pattern we see most often is this: someone runs payroll in-house for two or three years, thinks it's going fine, and then discovers a problem that costs more to fix than outsourcing would have cost for the entire period

The question isn't really whether DIY payroll is cheaper on paper. It is. The question is whether it stays cheaper once you account for what it actually takes to get payroll right every time, and what happens when you don't

What DIY payroll actually costs (beyond the software)

Most business owners start the cost comparison with software fees. Xero payroll is included in your Xero subscription. Other platforms charge $5 to $15 per employee per month. Either way, the software cost looks tiny compared to outsourcing

But the software is maybe 10% of the real cost. The rest is your time

Think about what a typical pay run involves. You're collecting timesheets, checking leave balances, calculating penalty rates under the right modern award classification, running the pay, generating payslips, filing Single Touch Payroll (STP) reports to the ATO, generating compliant payslips, and reconciling the super payments. For a business with 10 to 15 employees across a couple of different awards, that's three to five hours per pay cycle if you know what you're doing. Longer if you don't

Then there's the time you spend outside of pay runs. Onboarding new employees, setting up tax file declarations, checking award rate increases every July, updating leave accruals, processing terminations and calculating final pay. If someone takes parental leave or you need to pay a redundancy, you're spending an afternoon just figuring out the rules

A business owner billing at $150 an hour who spends five hours a fortnight on payroll is spending $1,625 a month of their own productive time on it. That's more than most outsourced payroll services cost in Australia

The compliance cost nobody budgets for

Here's where the real gap between DIY and outsourced payroll shows up. Compliance

Australian payroll sits across multiple overlapping systems. The Fair Work Commission sets modern award rates and the National Employment Standards (NES) set baseline entitlements. The ATO handles PAYG withholding, STP reporting, and superannuation. State revenue offices manage payroll tax thresholds. And from July 2026, Payday Super will require employers to pay super within seven business days of each pay run instead of quarterly

Every one of these systems changes regularly. The Fair Work Commission lifted modern award rates by 3.5% in July 2025. The super guarantee rate is at 12%. STP Phase 2 reporting requirements expanded the data fields employers need to submit. And Payday Super is about to add a whole new compliance rhythm that most businesses aren't prepared for

If you're running payroll yourself, you need to track every one of these changes. Miss an award rate increase and you're underpaying staff. Miss a super deadline and you're liable for the super guarantee charge (SGC), which includes the shortfall amount, 10% nominal interest calculated from the start of the quarter, and a $20 admin fee per employee. The SGC is not tax deductible

The penalty regime has also tightened. Since January 2025, intentional wage underpayment - classified as wage theft - is a criminal offence. Fines reach up to $7.8 million for corporations and individuals face up to 10 years imprisonment. Even for accidental underpayments classified as "serious contraventions," civil penalties can reach $4.95 million per contravention for a body corporate

Those numbers aren't aimed at big corporates alone. The Fair Work Ombudsman's Pay and Conditions Tool processed over 5.2 million calculations in 2024-25. Employees are checking. And once they find a gap, back-pay obligations can stretch back six years

Where DIY payroll goes wrong most often

We've written separately about the most common payroll errors that cost Australian businesses. But in our experience working with businesses that come to us after running payroll themselves, a few patterns come up again and again

Award misclassification. An employee is classified at the wrong level under their modern award, or they've been promoted and their classification hasn't been updated. This is the single biggest source of underpayment claims in hospitality and trades

Penalty rate errors. Overtime, weekend rates, and public holiday loadings vary between awards. A construction business and a retail business calculate Saturday rates differently. Software helps, but only if the underlying setup is correct

Super timing. Paying super late - even by a few days - triggers the SGC. Under the current quarterly system that's manageable to track. Under Payday Super, with a seven-business-day window after every pay run, the margin for error shrinks dramatically

Leave accrual mistakes. Part-time employees who change hours, casuals converting to permanent, employees on workers' compensation - these all create leave accrual scenarios that catch people out

Final pay errors. Terminations are where everything compounds. Unused leave, notice periods, redundancy calculations, ETP tax treatment - getting a final pay wrong is common and expensive to remedy after the fact

None of these are hard to get right if payroll is your job. They're hard to get right when payroll is the thing you do between everything else

What outsourced payroll actually looks like

There's a perception that outsourcing payroll means handing your employees' details to a faceless call centre. That's not how it works, at least not with a managed payroll service

A dedicated payroll specialist processes your pay runs using the same software you already use (typically Xero), but they bring the compliance knowledge that keeps you out of trouble. They handle award interpretation, STP Phase 2 reporting, super payments, leave management, and employee onboarding and offboarding

You stay in control of approvals. You tell them when someone's hired, when hours change, when someone leaves. They do the calculations, lodge the reports, and make sure nothing falls through

The cost is typically structured per-person, per-pay-run. For most small businesses with 10 to 20 employees on fortnightly pay, outsourced payroll runs between $800 and $2,000 a month depending on complexity. That's the total cost - not software plus your time plus the risk of getting it wrong

When DIY payroll still makes sense

Not every business needs to outsource. If you have fewer than five employees, they're all on the same award, nobody works weekends or overtime, and you're comfortable with the compliance obligations, then running payroll in Xero yourself is perfectly manageable

Where it stops making sense is when any of these apply: you have employees across multiple awards, you employ casuals or shift workers with penalty rates, you're spending more than a couple of hours per pay cycle on it, or you're not confident you're keeping up with regulatory changes

And here's the thing that's easy to overlook. The cost of outsourcing is fixed and predictable. The cost of DIY payroll only looks cheap until something goes wrong. A single underpayment claim involving back-pay across two or three employees for a couple of years can run into tens of thousands of dollars, before you even factor in the accounting and legal time to sort it out

The real comparison

Strip away the assumptions and the maths is fairly straightforward

DIY payroll costs you software (low), your time (high, especially relative to what you could be doing instead), and carries uncapped compliance risk. Outsourced payroll costs a fixed monthly fee, frees up your time, and shifts the compliance burden to someone whose entire job is getting it right

We see businesses try to split the difference - running payroll themselves and then asking their accountant to check it quarterly. But quarterly checks don't catch fortnightly errors in time. And under Payday Super, quarterly anything in payroll is a thing of the past

If payroll is the thing that keeps you up on a Wednesday night, it's probably time to let someone else handle it