In 2018, Ahsan performed in a courtroom drama "Ek Je Chhilo Raja" based on the historic Bhawal case directed by Srijit Mukjerji in a star cast including Jisshu Sengupta, Aparna Sen, Anjan Dutt, Rudranil Ghosh and others. She was also seen in "Crisscross" alongside Mimi Chakraborty and Nusrat Jahan, directed by Birsa Dasgupta. "Debi", a film based on Humayun Ahmed's novel, was released on 19 October 2018. It is directed by Anam Biswas, starring Chanchal Chowdhury, Ahsan and Sabnam Faria in the lead roles. The film was produced by Ahsan, as her first production from her production house "C Te Cinema". She received her fourth National Film Award for Best Actress and her seventh Meril Prothom Alo Award for Best Film Actress (Critics Choice) for her performance in this film.