How Old Can Children Be On Parents Health Insurance? 
Obamacare requires carriers to allow adult children to continue on their parent 's plan until age 26 . Most of these adult children would be better off with a plan of their own if they are between the age of 19 and 26 . One reason to put adult children on a parent 's plan is to access maternity benefits if the parents coverage is through an employer group health insurance plan . 