A working holiday maker (WHM) is a person who has a visa subclass:
417 (Working Holiday)
462 (Work and Holiday)
Both of these visas are open to people aged between 18 and 30 years of age (in some cases 35 years of age) from eligible countries to enable them to holiday and work or study in Australia. The visas are for 12 months but may be extended to a second and third 12-month visa.
As a working holiday maker, your income is taxed at 15% for:
the first $37,000 – for 2019–20 and earlier income years
the first $45,000 – for 2020–21 and later income years.
The balance of your income is taxed at ordinary rates. Higher rates of withholding will apply above these thresholds. For more information, see tax table for working holiday makers.
https://www.ato.gov.au/Individuals/coming-to-australia-or-going-overseas/coming-to-australia/working-holiday-makers/
Note: It is still important to correctly determine the residency status of working holiday makers, as there will be other factors to consider, such as medicare levy and eligibility for tax offsets.
If the income is shown on a PAYG Payment Summary it will have Code H. This income is included in Item 1 of the tax return, along with the Type H.
Example: Taxpayer has a working holiday income of $35,000.
When preparing tax returns on the software, any amount shown on a PAYG Payment Summary with Code H will automatically be transferred to Item A4. This will need to be adjusted if there is income other than wages or if there are tax deductions to be taken into consideration.
The taxable working holiday maker income is included in Item A4 of the tax return. The amount included at Item A4 will be the taxable income earned during the year while a working holiday maker from all Australian sources– wages, business income, interest etc. This will enable the ATO to calculate the tax at the correct rate.