Your plan becomes active on the first of the month provided you purchased your plan by the 25^th of the previous month. For example, you purchase your plan on June 21, 2019. Your plan will become active on July 1, 2019 the following month. It ends twelve months from the month your plan became active. For example, you purchase your plan in June 2019. It became active on July 1, 2019. It will end June 30, 2020.Twelve months later.