Payroll system migration: a compliance checklist for CFOs and project leaders

Published by SESAY · 2026-10-07 · General Australian payroll guidance

What to understand first

A migration should prove that approved rules and data survive the move. The project is not complete when employee names import successfully. Opening balances, pay codes, historical records, reporting identifiers and access responsibilities all need explicit acceptance criteria.

Practical checks

• Reconcile employee counts and balances by entity and pay group.
• Run representative parallel calculations, including edge cases.
• Preserve historical records and validate retrieval arrangements.
• Agree go-live authority, unresolved exceptions and recovery steps.

Fictional example

A fictional company’s parallel test matches net pay but omits an opening leave balance for employees on extended leave. An employee-level balance reconciliation catches the omission before go-live. The project adds inactive and absent employees to its acceptance population rather than testing only those in the next pay run.

Your next step

Define tolerances before reviewing results and explain every accepted difference. Roundings, timing and rule changes are different causes; none should become a general excuse. Make ownership of post-launch issues explicit so employees are not passed between the software vendor, HR and payroll.

How SESAY can help

SESAY can support migration reconciliations, payroll scenario testing and operational handover documentation, with sign-off retained by the authorised client team.

Official sources

• Fair Work — Record-keeping
• ATO — Correcting information reported through STP

Sources researched 2026-10-07. Examples are fictional and use stated assumptions. Confirm current rules and your circumstances before acting. This is general information, not individual tax or legal advice. SESAY is independent of the regulators linked here.