In 2017 Season, Taseva made her breakthrough at the 2017 Kyiv Grand Prix where she finished 4th in the all-around and won the gold medal in ball final. She then competed at the 2017 Marbella Grand Prix where she finished 6th in the all-around and qualified to 3 apparatus final. At the 2017 Pesaro World Cup, Taseva finished 5th in the all-around ahead of teammate Neviana Vladinova. She also qualified to all the event finals finishing 4th in hoop, 5th in ball, 6th in ribbon and 8th in clubs. The following week, at the 2017 Tashkent World Cup, Taseva made her World Cup breakthrough, where she won her first all-around medal, a bronze, and in addition, a silver with clubs and a bronze with ball. At the 2017 Sofia World Cup, Taseva won another all-around medal, a silver, behind teammate Neviana Vladinova. In the finals, she also won a bronze with ribbon. At the 2017 European Championships, Taseva, along with Vladinova and the Bulgarian junior group (Maria Spasova, Bilyana Vezirska, Bilyana Pisova, Boyana Gelova and Galateya Gerova) won the team all-around bronze medal, behind Russia and Belarus. In the finals she also won a silver with ribbon and placed fourth with hoop. On August 5–7, Taseva finished 6th in the all-around behind teammate Neviana Vladinova at the 2017 Minsk World Challenge Cup, she qualified in 3 apparatus finals and won finished 6th in ball, 5th in both ribbon, and clubs. On August 11–13, Taseva again finished 6th in the all-around behind Vladinova at the 2017 Kazan World Challenge Cup, she qualified in 3 apparatus finals and finished 6th in ball, 5th in clubs, ribbon. On August 30 - September 3, Taseva and Neviana Vladinova represented in the individual competitions for Bulgaria at the 2017 World Championships in Pesaro, Italy; she placed 8th in qualifications and finished 10th in the all-around final. On November 5–6, Taseva competed at the 2017 Dalia Kutkaite Cup finishing 5th in the all-around.