Income Tax Assessment Act 1936
A trustee beneficiary in respect of:
(a) a share of the net income of a closely held trust for a year of income that is included in the assessable income of the trustee beneficiary of the trust under section 97 ; or
(b) a share of a tax-preferred amount of a closely held trust to which the trustee beneficiary of the trust is presently entitled at the end of a year of income;
may quote his or her tax file number to the trustee of the closely held trust in connection with that trustee making a correct TB statement about that share.
Section 8WA of the Taxation Administration Act 1953 makes it an offence for a person to require or request another person to quote the other person ' s tax file number unless provision is made by a taxation law for the other person to quote the number.