How Much Is The Medicare Late Enrollment Penalty? 
There are two different enrollment penalties . The first being your Part B enrollment penalty . Basically your monthly premium may go up 10 % for every full 12 month period that you could have had Part B , but did not sign up for it . If you or your spouse has group coverage , there would be no need to sign up with Part B until group coverage ends . Part D penalty is a 1 % penalty per month for every month you do n't have a Part D plan and you were eligible to have it . Like above , if you have creditable coverage -LRB- group coverage -RRB- , you can delay your Part D enrollment until you lose your group coverage . 