Currency detection is an important task in automated cash handling systems, such as vending machines, ATMs, and cash registers. It involves identifying and verifying the denomination of banknotes using image processing techniques. MATLAB is a powerful tool that can be used for currency detection due to its built-in image processing functions and algorithms. By using MATLAB, we can develop an accurate and efficient system for currency detection that can handle different types of banknotes and provide reliable results. This technology has the potential to improve the accuracy and efficiency of cash handling systems, reducing the likelihood of errors and fraud.