How soon can I renew my US passport?
You can renew your passport whenever is convenient for you. Any time up to a year before it expires or any time - even many years - after it expires, depending on the citizens travel plans, is totally normal and acceptable. Keep in mind that at certain times of year, it can take a couple of months to get a passport renewed, and time your application carefully so that you dont end up unable to travel on pre-made plans.