This edition of the Vodacom Cup was played between the fourteen provincial rugby union teams in South Africa.
There were fourteen teams participating in the 1998 Vodacom Cup.
Bonus log points were awarded to teams that scored four or more tries in a game, as well as to teams that lost a match by seven points or less.
The top two teams in each section qualified for the play-offs.
The following teams took part in the 1998 Vodacom Cup competition: The final logs at the completion of the round-robin stage were as follows:[1]