What are your settings for these:
- Admin->Configuration->My Store->Display Prices With Tax
- Admin->Configuration->My Store->Basis of Product Tax
- Admin->Configuration->My Store->Basis of Shipping Tax
- Admin->Modules->Shipping->Envoi Colissimo->Tax Class
- Admin->Modules->Shipping->Envoi Colissimo->Tax Basis
- Admin->Modules->Shipping->Envoi Colissimo->Shipping Zone
Bookmarks