This research intends to examine the legal parameters governing interest rate adjustments in bank loans, with particular emphasis on both fixed and variable interest rates within financial legislation. Additionally, it aims to assess the impacts of these interest rate types on borrowers and lenders alike, while clarifying how each influences financial responsibilities and contract integrity. A descriptive methodology was utilized to analyze pertinent legal documents and regulations. The results uncovered deficiencies in the legal safeguards available to borrowers concerning interest rate modifications, highlighting the necessity for an improved legislative framework that aligns with technological progress in the financial industry. In light of these findings, the study advocates for the revision and modernization of legal texts pertaining to bank loans to bolster borrower rights and ensure the clarity and stability of loan agreements, reflecting contemporary technological and financial advancements.