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What is an IAS?

An IAS (instalment activity statement) is an activity statement without a GST section. Where a BAS reports GST (and often PAYG as well), an IAS reports just your PAYG obligations — the tax you've withheld from wages (PAYG withholding), your PAYG instalments, or both. A common example: a business that lodges a quarterly BAS but pays wages monthly receives an IAS for the in-between months to report the withholding.

myaccountant treats an IAS exactly like any other activity statement — it lives in the same list and lodges through the same flow.

How an IAS appears in myaccountant

  • Go to Tax → Activity Statements and stay on the Statements tab. IAS forms show in the Form column with an IAS code, such as IAS-I or IAS-J, instead of a BAS code. Sync from ATO brings them in along with your BAS — the app simply shows whichever forms the ATO has issued you.
  • To see only these, set the Form filter to IAS.
  • If you're creating one manually with New BAS, the Form type picker includes the IAS variants (instalment activity statements and the PAYG/GST instalment notices).

What sections appear

Open an IAS and you'll see only the sections that apply to its form — there is no GST section:

  • PAYG Withholding — wages and other payments (W1) and the tax withheld from them (W2, plus W3/W4 where they apply), totalled at label 4.
  • PAYG Instalments — your instalment amount or instalment income and rate (the T labels), giving label 5A.
  • Summary — the totals and the net amount payable or refundable, as on a BAS.

Which of these you see depends on the form the ATO issued — an IAS-I carries only PAYG withholding, for example, while other variants carry PAYG instalments. Instalment notices are simpler again: the ATO supplies the instalment amount, and you can vary it if needed.

Lodging an IAS

The flow is identical to a BAS: open the statement, Prefill from ATO, review the figures (pay runs reported through payroll prefill W1 and W2), Edit and Save any section that needs changing, optionally Validate, then Submit and complete the declaration. See How do I lodge my BAS? — every step applies unchanged.

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