Former B.C. premier Bill Vander Zalm says a harmonized sales tax in B.C. is anything but a done deal.

Vander Zalm is disputing what he says are Liberal government claims that federal and provincial legislation clearing the way for the tax makes the levy inevitable.

According to Vander Zalm, any legislation can be reversed and he points to Saskatchewan, where he says politicians repealed an HST in 1991, two years after it was enacted.

The former premier is heading up a petition drive designed to "repeal" the tax once it's enacted, rather than trying to prevent it up front.

And "Fight HST" spokesman Chris Delaney warns Premier Gordon Campbell could face a recall drive in his Point Grey riding if he ignores a successful anti-HST petition.

The B.C. government intends to implement a harmonized sales tax on July 1, although the levy is already being charged on items such as plane tickets, summer camps and other services purchased now to be used after that date.