From colemangreig.com.au: Moving overseas may have significant tax implications for Australian assets, as individuals may become non-residents for tax purposes.

Upon leaving, individuals are deemed to have disposed of certain capital gains tax (CGT) assets, and non-residents may miss out on CGT discounts and exemptions for primary residences under specific conditions.

Additionally, members of self-managed super funds (SMSFs) must maintain Australian tax residency to avoid high tax rates on non-compliant funds.