Anne-Mie Callebaut

Suretyship under the new Book 9 of the Belgian Civil Code: a familiar “nest egg”, clearly and modernly redefined as of 1 January 2026

On 1 January 2026, new rules on personal securities will enter into force. Under these rules, a third party undertakes, if necessary, to guarantee payment of the debtor’s debt vis-à-vis the creditor. Although the legislator has also reviewed other forms of personal security, suretyship remains the cornerstone of all personal securities.