The Federal Court has held that a student taxpayer who received Youth Allowance was entitled to a deduction for the expenses she incurred in pursuing a teaching degree, as she incurred them in the gaining or producing of her assessable income (being the Youth Allowance).
Court rules you can claim tax deductions against Youth Allowance
The Court basically held that, in order for the taxpayer to receive the Youth Allowance, she had to satisfy the requirements set out in the Social Security Act 1991 (i.e., generally to undertake full-time study throughout the relevant period), which required her to spend money (on such things as student administration fees and text books), so those outgoings were incurred in gaining or producing her assessable income.
