 Trumble joined the National Bank of Australasia in 1887 to begin a career in banking. While the bank often allowed him time to practice, his frequent absences with cricket meant his career progression was slow; after each of his five tours of England he returned to find junior bank officers promoted over him. Nevertheless, he was appointed accountant at the Richmond branch in 1903 and after his retirement from cricket in 1908, manager of the Kew branch.
