OPM has not specified how much premiums will increase, nor exactly when. Those and other details could be announced in the upcoming weeks. OPM further has said that some enrollees won’t be affected but has specified only those newly enrolling after age 80, at least so far. Premiums vary according to age at enrollment and the enrollee’s choices regarding the maximum daily benefit amount, inflation protection, and the length of the benefit period (two, three or five years, or unlimited). Rates rose effective last August 1 for all types of coverage for those enrolling after that date, although rates remained the same for those already enrolled by then. It’s unclear whether those relatively new enrollees will see an additional increase or whether the coming increase merely will bring others up to what they already are paying. As with the prior increases, OPM blamed economic factors such as higher than expected claims payouts and low returns on investments of the program’s cash reserve.