Exports to many countries outside the EU require an origin document stating the country from which the product originates. Normally, a Certificate of Origin (CvO) is used. You should use a EUR.1 document or EUR-MED document for countries with which the European Union has concluded trade agreements. These documents entitle you to a reduction of import duty or in some cases even an exemption. You can request a Certificate of Origin (in Dutch), EUR.1 document or EUR-MED document (in Dutch) digitally or in writing from the Chamber of Commerce (KvK).
The Customs papers required differ per product and per country to which you want to export. As a general rule, products must be accompanied by a commercial invoice and a transport document. The EU’s Market Access Database shows the documents required for a large number of countries for individual products and the levies such as import duty, excise duty and VAT.