The couple, identified as Rajesh Tripathi (46) and Renu (43), allegedly consumed poison on Thursday at their Paredeshipura residence.
The couple was admitted at the nearby hospital where Rajesh died on the same day, while Renu succumbed this morning, Pardeshipura police station in-charge, S K Das said.
Heavy losses in their readymade garments business and mounting debt drove them to take the extreme step, he said, adding, a suicide note was recovered from the spot in which they had advised their son not to take up business in life.