The club was founded in 1978 after bankruptcy of its predecessor, Seinäjoen Palloseura (SePS).

SePS had activity in football and bandy, which was the club's main sport in the beginning.

SePS played seven seasons in the bandy top flight before 1966.

[1] In 1977, SePS went bankrupt, but Sepsi-78 was formed and the new club got its place in the Ykkönen.

[1] After 2007 season the first teams of Sepsi-78 and TP-Seinäjoki merged into Seinäjoen Jalkapallokerho, which got Sepsi-78's place in the Kakkonen.