A director ID is a unique identifier that a director will apply for once and keep forever – which will help prevent the use of false or fraudulent director identities.

When you must apply depends on when you were appointed as a director for the first time:

• New directors appointed for the first time between 1 November 2021 and 4 April 2022 must apply within 28 days of their appointment.
• From 5 April 2022, intending new directors must apply before being appointed.
• Directors appointed on or before 31 October 2021 have until 30 November 2022 to apply.

For more details: Apply for your director ID | Australian Business Registry Services (ABRS)

Source: ASIC