Canadian residents must add applicable Provincial taxes:

BC 5 %
Alberta 5%
Sask  10%
Manitoba 12 %
Ontario 13 %
Quebec 5%
NFLD 13 %
NS 15 %
NB 13 %
PEI 5 %
NT 5%
NU 5%
YT 5%

USA residents are responsible for all duties and or state taxes