She gained widespread recognition for her performances in popular Russian television series and the critically acclaimed miniseries adaptation of Mikhail Bulgakov's novel, The Master and Margarita.

After completing her secondary education, Kovalchuk initially planned to pursue a career in cybernetics and intended to enroll at the Leningrad Polytechnical Institute.

Kovalchuk gained significant popularity through her role as Inspector Maria Shvetsova in the television series Secrets of Investigation in 2001.

Following the conclusion of the filming of The Master and Margarita in June 2005, Kovalchuk announced her divorce from her then-husband, Anatoly Ilchenko, who also appeared in the miniseries.

The couple married on 1 December 2007 in St. Petersburg, and as a wedding gift, Kapustin presented Kovalchuk with a thoroughbred racehorse.