Deadlines and Compliance Hub

Due-date guides and practical compliance checklists for lodgment obligations.

Related calculators

BAS due dates for 2025-26 across quarterly and monthly cycles, including practical checks to avoid late-lodgment penalties.

Late BAS risk controls and what to do before due date, based on ATO guidance.

Key ATO dates for 2025-26 & 2026-27: 30 Jun EOFY, 31 Oct self-lodger deadline, 15 May tax agent deadline, 28 Feb BAS Q2, super SG quarterly.

How to reduce risk when lodging late, with verified ATO due-date anchors.

When agent lodgment concessions may apply and where self-lodger deadlines differ.

Verified due-date guide for self-lodgers, including the 31 October rule and payment timing notes.