New tax tables: how payroll managers should test updates before a pay run

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

What to understand first

The ATO published updated PAYG withholding schedules for the 2026–27 income year. Installing a vendor update is only one step. Teams should verify the effective date and test the combinations they actually use, especially loans, residency settings and unusual payments.

Practical checks

• Confirm the vendor release and applicable ATO schedule version.
• Select representative employees without exposing live data unnecessarily.
• Compare expected withholding with a current official calculation.
• Retain results and obtain approval before production release.

Fictional example

A fictional employer updates its main payroll tenant but overlooks a separate entity used for casual staff. A release checklist that includes every tenant identifies the gap. The reviewer checks the first affected run and assesses any earlier payments processed with the wrong version.

Your next step

Maintain an inventory of payroll instances and integration owners. Include who applies changes, who tests them and who can approve a rollback. Avoid copying old expected figures into a new-year test: calculate them from the current official rules and explain any variance.

How SESAY can help

SESAY can help build a compact regression test pack and change calendar so routine system updates become visible, reviewable work.

Official sources

• ATO — 2026 PAYG withholding tax tables

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.