Notaries hold a strategic position in ensuring legal certainty and protection through their authority to draw up authentic deeds. However, modern notarial practice faces the problem of unequal power relations between notarial offices and banking corporations through partner cooperation agreements, which may create financial dependence, diminish notarial independence and neutrality, and encourage the neglect of formal verification procedures due to pressure to complete documents. This study aimed to analyze the juridical limitations of cooperation agreements between notaries and banking institutions and to evaluate the forms of legal protection required to maintain the independence of the notarial office. The study employed a normative juridical method by examining legal provisions and professional ethical principles governing such cooperative relationships. The results showed that partnerships between notaries and banking institutions must be based on the principle of freedom of contract, the implementation of which is limited by statutory regulations and professional codes of ethics. Notaries are required to maintain an independent, honest, diligent, and impartial attitude and are entitled to reject clauses or specific requests that conflict with substantive and formal legal provisions. This study concluded that a balance between achieving banking business targets and protecting the public can only be realized through consistent preventive supervision by professional organizations and authorized institutions. These findings contribute to strengthening the legal protection of the independence of the notarial office and emphasize the importance of institutional supervision in maintaining professional integrity and public trust in the national notarial institution.