In 1998, Čáslav were promoted a division and again in the year 2003–04 to the Bohemian Football League, where they played for two seasons before winning another promotion, this time to the Czech 2. Liga in 2006.
In both 1998 and 2003–04, Čáslav were elevated to a higher league status within the Bohemian Football League system, playing for two seasons before winning another promotion to the Czech 2. Liga in 2006.