I Have an 18 year old son. Was kicked out a month ago ( no job, drug use, alcohol use, disrespect, etc.) My (older)sister(who lives in Washington State, and thinks she knows everything) told me we are responsible for any and all of his actions until he is 21, not 18. This is news to me. I am under the belief that the age is 18. Made sure all his vehicle, insurance, etc. were all put in only his name once he turned 18. (FYI- we're not heartless--he has been "in trouble" for many years, and we have tried numerous things to help him, even spent a year at a boys camp)