Keep up with key dates for small businesses
Due date falling on a weekend or public holiday
When a due date falls on a Saturday, Sunday or public holiday, you can lodge or pay on the first business day after without incurring a penalty or general interest charge.
Substituted accounting periods
The income tax due dates are for entities that balance on 30 June – that is, at the end of the Australian financial year. They don't apply to entities that use a substituted accounting period.