Waivers are issued for a period anywhere from 6 months to 5 years after which time they must be renewed. In rare cases, such as where a person has been refused entry for an offence that is not considered to be against moral turpitude, a person may receive a permanent document to be used when crossing the border.
How long a Waiver will be issued for is dependent on the nature of the offences, when they occurred, the length of the criminal record, the individual’s personal situation, and many other factors.