Dynamic PAYG Instalments: ATO Releases Draft PCG 2026/D3

The ATO recently released Draft Practical Compliance Guideline PCG 2026/D3, providing guidance on how it intends to administer the general interest charge (GIC) rules where taxpayers use the proposed Dynamic PAYG Instalment method.

The draft guideline follows the Federal Budget announcement of a new Dynamic PAYG Instalment regime, expected to be available from 1 July 2027, which will allow businesses to calculate PAYG instalments using real-time financial information sourced from their accounting software.

What is changing?

Under the current PAYG instalment system, the ATO generally provides an instalment rate or amount based on information from the taxpayer’s most recently assessed tax return. These amounts can be varied, but if those variations result in instalments falling below a prescribed threshold, taxpayers can become liable for GIC on the shortfall.

The proposed Dynamic PAYG Instalment method aims to use financial information from the businesses accounting software to better align instalments with current year trading. While the details on this are limited, the concept appears to be that the Activity Statement reporting within Xero, MYOB, Quickbooks, would contain an ATO- approved PAYGI calculation method.

In practice, many businesses and their advisors already monitor profitability throughout the year and vary PAYGI where current year trading differs significantly from prior-year results. It will be interesting to see how the methodology accommodates common tax adjustments that are not always reflected in day-to-day bookkeeping records. For many businesses, taxable income can differ significantly from accounting profit due to depreciation adjustments, timing differences and other year-end tax adjustments.

The ATO’s compliance approach

Importantly, PCG 2026/D3 does not change the law. It outlines when the ATO will generally not devote compliance resources to applying or collecting GIC where a taxpayer has used the Dynamic PAYG Instalment method appropriately.

To access the favourable compliance treatment, taxpayers will generally need to:

• Use an approved Dynamic PAYG Instalment calculation method.
• Take reasonable care in preparing and reviewing the calculation.
• Keep appropriate records supporting the figures used.
• Use the method as intended and not manipulate outcomes to defer tax payments.

This compliance approach should provide greater certainty for businesses acting reasonably and relying on approved software-driven calculations.

Monthly reporting may be the bigger change

The Government’s Budget announcement relating to dynamic instalments also included a measure for SMEs to opt into monthly PAYG Instalments from 1 July 2027, while taxpayers with a history of non-compliance may be required to move to monthly reporting.

For some businesses, that may be the more significant reform. While more frequent instalments could improve the alignment between tax payments and current business performance, it also potentially:

• accelerates cash leaving the business;
• requires more disciplined bookkeeping;
• creates additional processing events throughout the year.

Currently only businesses with income more than $20 million (or $100 million if you pay GST less frequently than monty) pay monthly PAYG instalments. The expansion of monthly PAYGI therefore represents a significant shift in how many businesses manage their tax cash flow.

What’s Next?

The ATO is currently consulting on PCG 2026/D3, with submissions open until 28 August 2026. Subject to implementation of the Government’s announced measures, the Dynamic PAYG Instalment system is expected to commence from 1 July 2027.

Businesses should monitor further developments as the ATO continues to work with software providers and stakeholders on the rollout of these measures. Maintaining strong compliance practices and ensuring accounting systems are capable of supporting more frequent reporting requirements should remain a key focus.

Need assistance?

Now is a good time to consider whether your accounting processes and reporting systems are equipped for a more real-time approach to tax administration. If you’d like to discuss your position, we’re here to help. You can reach out to us here.

 

Date: 14/07/2026

The Macro Group Limited AFSL: 485843 Tax Agent Number 24 76 5236.

The information in this article contains general information only. We have not taken into consideration any of your personal objectives, financial situation or needs. Before taking any action, you should consider whether the general advice contained in this communication is appropriate to you having regard to your circumstances and needs and seek appropriate professional advice if you think you need it. We recommend that you consult a licensed or authorised financial adviser if you require financial advice that takes into account your personal circumstances.