5 robbers were sentenced to death for killing former tax official Abu Taher in 2015.
A Dhaka court on Wednesday passed the order.
In the verdict, two accused Nur Alam and Masud Mia, got 10-year life term imprisonment while two female domestic help Selina and Nurjahan got one-year imprisonment.
The five condemned convicts are Md Nasir, driver of the victim, and his four accomplices -- Russel Talukder, Md Rustam, Md Amir Hossain and Sohel Rana.
Judge Abdur Rahman Sarker of Speedy Trial Tribunal-4 handed down the penalty.
On March 2, 2015, a gang of robbers killed Abu Taher, a former tax commissioner, and looted Tk 45,000 and around 12 tolas of gold ornaments from his house in Dhaka's Rampura area.