The competition format saw the four provincial champions compete in two 'Home' semi-finals, the winners of which then contested the All-Ireland 'Home' final.
In the last stage of the competition, the victorious 'Home' finalists then met the champions of Britainto determine who would be crowned overall All-Ireland Junior Football Champions for 1946.
The title match at Croke Park concluded with Down defeating Warwickshire, the champions of Britain, on a scoreline of 2–10 to 1–09.[1]