A common question asked when evaluating a project is: what is its overall contribution to the economy? This contribution can be an important part of the benefit to cost evaluation of the project, and therefore of particular relevance when the project has been supported by public funds or policy initiatives. Economic multipliers are a frequently used tool in the evaluation of economic impacts. This document provides summary level discussion, advice and recommendations regarding the use of multipliers in reviewing film projects. Rather than identifying the most effective type of multiplier per se, this guide has been prepared to support effective analysis and evaluation in the film sector by briefly describing the potential uses and limitations of different multipliers, so that these limitations can be factored into their application.