The optimal age to purchase long term care insurance typically ranges between the ages of 50 and 65. This is because at this stage in life, you are still relatively young and healthy, but you are also starting to recognize the potential need for long term care as you age. Purchasing insurance at this age allows you to lock in a lower premium rate, as insurance companies generally increase premiums as you get older. However, it is important to note that the ideal age to purchase long term care insurance can vary depending on individual circumstances, such as health status and family history. It is always best to consult with a financial advisor or insurance professional to determine the best course of action for your specific situation.