Toyotashi Station was opened on November 11, 1920, as Koromo Station(挙母駅,Koromo-eki?) on the privately owned Mikawa Railway. The Mikawa Railway was merged with Meitetsu on June 1, 1941. The station was renamed to its present name on October 1, 1959. The station building was rebuilt in 1961. The tracks were elevated in 1985 and a new station building was completed at that time.