How much is the COBRA premium? Crystal April 03, 2018 20:00 Updated COBRA premiums are equal to 102 percent of the total monthly premium (employee and employer contribution). Related articles Will my COBRA insurance be with a different insurance group or plan? I liked the coverage I had. Who is eligible for COBRA? How do I enroll? What is the longest amount of time I can be enrolled in COBRA? How long does COBRA last?