The lightweight cryptographic algorithms used to increase the safety for financial transactions. The proposed lightweight cryptographic algorithms provide a middle ground, guaranteeing strong security with low computational overhead. Lightweight cryptography approaches being investigated for their potential in protecting private financial information during transactions. These algorithms are well-suited for real-time monetary transactions since they not only strengthen data integrity but also cut processing times through streamlined encryption and decryption processes. This paper focus into the planning, execution, and efficiency assessment of such lightweight cryptographic algorithms as they pertain to monetary systems. This study shows how successful they are at preventing common security threats like eavesdropping and data manipulation through extensive testing and analysis. Lightweight cryptographic algorithms have been shown to have the ability to dramatically improve the security of financial transactions, providing an efficient and cost-effective means of safeguarding sensitive financial data in today interconnected and potentially dangerous digital environment.