Toma spent the early part of the 2016 Super Rugby season with the Development Squad, however a halfback crisis which saw Aaron Smith, Fumiaki Tanaka and Josh Renton all ruled out after the 2016 mid-year rugby union internationals break led to Toma receiving a call up to the Highlanders squad for their tours of South Africa and Argentina. In all, Toma made 3 appearances for the Highlanders, starting one game as they reached the semi-finals of the competition.