Due to close integration of partners along the supply chain and also strong dependencies amongst each other, risks can become a serious danger for a company. Purchasing plays a significant role in managing risks since increased commodity prices, supplier defaults and quality problems of the purchased parts often lead to a company meltdown. Every day companies are faced with potential risks like break down of the IT system, strikes, natural disaster or supplier insolvencies. Such risks do not only affect the companies which are directly involved, but also the companies up- or downstream the supply chain. A pro-active or anticipatory method to manage supplier default risks is to conduct financial supplier audits on a regular basis. Due to the resources involved, the audits have to be focused on those suppliers first who create the most negative financial impact on a company in case they get into financial difficulties. The work in hand deals with the development of a customized supplier rating method to sort suppliers according their risk and their possible negative financial impact to a company. Based on the sorting result sequence, the financial supplier audits can be conducted. Furthermore a Supplier-Risk-Portfolio can be drawn which visualizes the relationships amongst the suppliers and gives the buyers a better overview of their supplier base. Based on the position in the Supplier-Risk-Portfolio activities can be derived to handle the supplier risks and to influence the supplier base according to the defined risk strategy.