The present subject matter discloses system and method for executing prescriptive analytics. Simulation is performed from an input data (xinput) and simulation parameters (μ) to generate simulating data (D). Further, forecast data may be predicted by processing the simulating data (D) using predictive model (M). Further, prescriptive value (x′) may be determined based on the forecast data by using optimization model. The prescriptive value (x′) may be determined such that an objective function associated with the optimization model is optimized, whereby the optimization of the objective function indicates business objective being achieved. Further, the steps of simulating, predicting and determining may be iteratively performed until the objective function is not further optimized, satisfying predefined condition. Further, at each iteration, except the first iteration, the input data (xinput) is the prescriptive value (x′) determined at immediate previous iteration, whereby at the first iteration, the input data (xinput) is a reference data.