Lifetime maximum is the maximum amount of covered services that an insurance company will pay during the lifetime of a health benefit plan member. The insurance company will pay only up to the amount agreed as the life time maximum. Once the lifetime amount is reached, the plan will stop its payment of medical expenses. The term life time maximum is generally used in the context of health insurance rather than long term care insurance or dental insurance. The amount fixed as life time maximum vary widely from limited amount to an unlimited amount. In certain cases, a health insurance plan will carry no lifetime maximum.