Tom is a citizen of France. He had grown up in his family home there and still had a room to return to. He had no prior association with Australia until he arrived in September 2022. He came to Australia on a 1 year working holiday visa with intention to stay for 7 months. At that stage, he spent nearly four months in Sydney moving between 4 different houses. He then spent a month travelling btw Brisbane and Canberra with multiple stops. He arrived in Melbourne in early February 2023, staying in his uncle's house until he changed his plan again on his birthday, 1 July 2023. This time he was determined to study marine science in Australia, and soon got a 2 year student visa granted in late August. 

During FY23, he had two different periods of employment, one in Sydney for three months and another in Melbourne for a period of four months. Wage payments were paid to his Australian bank. He also had $500 interest income, half paid by an Australian bank, and the other half paid by Bank of France for a three year term deposit he made a year before he arrived in Australia.

During FY24, he earned the same amount of wage income and interest income as FY23.

Tom is not sure about his residency status, and how he should be taxed in Australia in each year. Please advise.