I dont think you can legally collect tax for those countries (VAT) without having a location in those countries and be filed with the local goverments. You may want to check avg customs and duty fees if you want to include those in your shipping fees though. I could be wrong im just another usa merchant.
Checkout FlavorCloud in the Shopify app store. Allows merchants to present duties and taxes at Checkout and customers to pay those fees in advance and those rates are guaranteed, so no surprises at delivery.