518. The fines prescribed by sections 513 to 516 or by the regulations are doubled for a second offence and tripled for a subsequent offence. The maximum term of imprisonment is five years less a day for a second or subsequent offence.
If an offender commits an offence under this Act after having previously been found guilty of any such offence and if, without regard to the amounts prescribed for a second or subsequent offence, the minimum fine to which the offender was liable for the first offence was equal to or greater than the minimum fine prescribed for the second offence, the minimum and maximum fines and, if applicable, the term of imprisonment prescribed for the second offence become, if the prosecutor so requests, those prescribed in the case of a second or subsequent offence.
This section applies to prior findings of guilty pronounced in the two-year period preceding the second offence or, if the minimum fine to which the offender was liable for the prior offence is that prescribed in section 516, in the five-year period preceding the second offence. Fines for a third or subsequent offence apply if the penalty imposed for the prior offence was the penalty for a second or subsequent offence.