HR and payroll in one platform for Australia
Reviewed by Mellow Editorial Team, HR & payroll content team
Running HR and payroll through separate systems creates reconciliation work, compliance gaps and version-control headaches. A single platform that handles both eliminates most of that friction — but only if it actually covers Australian compliance requirements end to end.
What "integrated" really means
Marketing copy uses "integrated" loosely. In practice, there are three distinct models:
Native integration — HR and payroll are built in the same codebase. Employee records, leave balances and pay data share one database with no syncing required.
Connector integration — Two separate products talk to each other via an API. Data moves between them, but there is still a seam. If the API breaks or a field maps incorrectly, payroll can run on stale data.
Manual export/import — A spreadsheet bridges the two systems. Common with older payroll software. High error risk and almost always a compliance liability.
When evaluating any platform for Australia, ask the vendor directly: is this one database or two products connected by an API? The honest answer tells you a great deal about where errors are likely to appear.
What Australian compliance actually requires from payroll
Australian payroll is not especially simple. A platform needs to handle all of the following reliably:
PAYG withholding. Income tax is progressive and must be withheld correctly at each pay event, including adjustments for tax file number declarations, tax offsets and any in-year changes an employee lodges.
Medicare levy. The standard levy is 2% of taxable income, withheld through payroll. Some employees qualify for a reduction or exemption; the platform needs to accommodate that.
Superannuation Guarantee. From 2026 the SG rate is 12% of ordinary time earnings, paid to a complying fund. The platform needs to calculate correctly, distinguish ordinary time earnings from overtime, and manage employee fund choices and stapled fund look-ups.
HECS/HELP repayments. Employees with study debts repay through payroll on a banded scale. The platform must apply the correct withholding band based on the employee's income, as declared on their tax file number declaration.
Single Touch Payroll (STP). Every pay event must be reported to the ATO via STP. Finalisation — effectively the payroll equivalent of a payment summary — is due by 14 July each year. A platform that cannot lodge STP directly, or that requires you to export data to a separate lodgement tool, creates unnecessary compliance risk.
Leave accruals and NES entitlements. The National Employment Standards set a floor of four weeks' annual leave for most full-time employees, plus a redundancy-pay scale based on years of service. HR and payroll need to agree on leave balances; if they do not, you risk underpaying leave on termination — which the Fair Work Ombudsman treats seriously.
Award and Enterprise Agreement pay rates. Many Australian employees are covered by a Modern Award. Pay rates, penalty rates, allowances and overtime rules vary significantly between awards. A platform that cannot apply award rules automatically forces manual calculation, which scales poorly.
Where integrated platforms genuinely help
When HR and payroll share one system, several problems disappear or shrink:
- Onboarding to first payslip. A new employee completes their tax file number declaration, superannuation choice and bank details once. Those details flow directly into payroll without re-keying.
- Leave management. Approvals in HR instantly update payroll balances. Termination calculations pull the correct accrued balance without a reconciliation step.
- Headcount and cost reporting. Finance can see labour costs against headcount in one place rather than joining exports from two systems.
- STP accuracy. When employee details change — address, TFN, tax scale — the update is live in payroll immediately. No overnight sync, no missed lodgement.
What to look for when comparing platforms
A few practical questions to ask any vendor before committing:
1. Is STP lodgement built in, or do I need a third-party add-on?
2. How does the platform handle Modern Award interpretation — built-in rules engine, manual configuration, or not at all?
3. Can it manage multiple entities under one login if I expand?
4. How are superannuation fund changes and stapled fund look-ups handled?
5. What does end-of-year STP finalisation look like, and what support is available before the 14 July deadline?
6. Is leave taken in the HR module reflected in payroll in real time, or on a sync schedule?
There is no universally correct answer to which platform is best. Businesses with a single Modern Award, stable headcount and straightforward pay structures have different needs from those running multiple entities, complex rosters or a mix of contractors and employees. The right platform is the one that covers your actual compliance obligations without requiring manual workarounds to bridge the gap.
Mellow's position in this landscape
Mellow is built for employers managing people across multiple countries, including Australia. The platform handles contractor payments, employment of record arrangements and cross-border payroll from one interface — useful if your Australian team sits alongside workers in other jurisdictions. For a purely domestic Australian business with complex award coverage, a specialist local payroll platform may go deeper on award interpretation. For businesses that need payroll across multiple countries in one place, Mellow's consolidated approach removes significant administrative overhead.
---
Run HR and payroll in Australia with Mellow
Mellow brings HR, payroll and 12 AI agents into one platform — built to handle Australia properly, with payroll included, from £4 per employee per month. The AI agents don't just answer questions; they generate contracts, run cost estimates and draft letters for you.
[Start a free trial →](/register)