Abstract: An explainable artificial intelligence based decisioning management method and system for processing financial transaction is disclosed. The method includes receiving a request for performing a financial transaction from applicant and from data sources. The method further includes performing a data sufficiency check using one or more neural network on the request by validating the request of the applicant with one or more external data sources. Further, the method includes generating a decision for the received request using neural network model if the data sufficiency check is successful. Additionally, the method includes validating the decision by reverse calculating, through the neural layers of the neural network model, an importance weightage distribution across each of the neural nodes. Also, the method includes generating a case assessment report for the generated decision based on the validation.