Effective procurement of goods and services in the Surabaya City Government area is essential to ensure that public funds are spent accountably and transparently. As such, there is an urgent need to examine the legal aspects of business contracts for the procurement of government goods and services in the city of Surabaya. The purpose of this study is to determine the factors that influence the occurrence of default by the Goods and Services Provider, as well as the responsibility of the regional head in the abuse of authority in the procurement of goods and services of local government. The research method uses normative juridical methods with a statutory approach and concept approach. The results of the findings in this study are that there are internal and external factors that make the occurrence of default where the agreement in an agreement is not implemented. Law Number 32 of 2004 concerning Regional Government for the implementation of legal liability of regional heads can be used as a guideline for the mechanism of legal liability of regional heads. The implementation of personal legal responsibility can be subject to article 3 of Law Number 31 of 1999 concerning Eradication of Corruption, as well as the return of state losses according to article 59 paragraph (2) of Law Number 1 of 2004 concerning State Treasury and article 18 letter b of Law Number 31 of 1999 concerning Eradication of Corruption. By shedding light on the legal framework that underpins procurement contracts in Surabaya, this study provides valuable insights for policymakers, public officials, and other stakeholders seeking to ensure the effective use of public funds in Surabaya City Government procurement.