A judge in Leicester Crown Court immediately sentenced Thomas Dunkley, 29, to life in prison with a minimum of 34 years to be served without parole, This is Leicestershire reported.
"Cutting up his body was a grotesque act, violating his person and dignity in death and violating the sensitivities of his family," Mrs. Justice Linda Dobbs, a High Court judge, said. "The use of his checkbook and cards was disgraceful."
Cummins, who won a WBA title as a light middleweight, retired from boxing in 1995. He was paralyzed in a 2004 motorcycle crash.
Dunkley, who had been staying with Cummins and caring for him, admitted cutting up the body and using bank cards and writing checks on Cummins' account. But he said Cummins died of natural causes in September.
Superintendent Matt Hewson, who led the police investigation, called Dunkley "deceitful, calculated and greedy." He said Dunkley used Cummins' own money to buy the equipment he used to dismember his body.